2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2007
6 Copyright (C) Simo Sorce 2001
7 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
8 Copyright (C) James Peach 2006
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 extern char *global_clobber_region_function;
27 extern unsigned int global_clobber_region_line;
29 /* Max allowable allococation - 256mb - 0x10000000 */
30 #define MAX_ALLOC_SIZE (1024*1024*256)
32 #if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT))
33 #ifdef WITH_NISPLUS_HOME
34 #ifdef BROKEN_NISPLUS_INCLUDE_FILES
36 * The following lines are needed due to buggy include files
37 * in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and
38 * also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA.
39 * Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as
40 * an enum in /usr/include/rpcsvc/nis.h.
47 #if defined(GROUP_OBJ)
51 #endif /* BROKEN_NISPLUS_INCLUDE_FILES */
53 #include <rpcsvc/nis.h>
55 #endif /* WITH_NISPLUS_HOME */
56 #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
58 enum protocol_types Protocol = PROTOCOL_COREPLUS;
60 static enum remote_arch_types ra_type = RA_UNKNOWN;
62 /***********************************************************************
63 Definitions for all names.
64 ***********************************************************************/
66 static char *smb_myname;
67 static char *smb_myworkgroup;
68 static char *smb_scope;
69 static int smb_num_netbios_names;
70 static char **smb_my_netbios_names;
72 /***********************************************************************
73 Allocate and set myname. Ensure upper case.
74 ***********************************************************************/
76 bool set_global_myname(const char *myname)
78 SAFE_FREE(smb_myname);
79 smb_myname = SMB_STRDUP(myname);
82 strupper_m(smb_myname);
86 const char *global_myname(void)
91 /***********************************************************************
92 Allocate and set myworkgroup. Ensure upper case.
93 ***********************************************************************/
95 bool set_global_myworkgroup(const char *myworkgroup)
97 SAFE_FREE(smb_myworkgroup);
98 smb_myworkgroup = SMB_STRDUP(myworkgroup);
101 strupper_m(smb_myworkgroup);
105 const char *lp_workgroup(void)
107 return smb_myworkgroup;
110 /***********************************************************************
111 Allocate and set scope. Ensure upper case.
112 ***********************************************************************/
114 bool set_global_scope(const char *scope)
116 SAFE_FREE(smb_scope);
117 smb_scope = SMB_STRDUP(scope);
120 strupper_m(smb_scope);
124 /*********************************************************************
125 Ensure scope is never null string.
126 *********************************************************************/
128 const char *global_scope(void)
131 set_global_scope("");
135 static void free_netbios_names_array(void)
139 for (i = 0; i < smb_num_netbios_names; i++)
140 SAFE_FREE(smb_my_netbios_names[i]);
142 SAFE_FREE(smb_my_netbios_names);
143 smb_num_netbios_names = 0;
146 static bool allocate_my_netbios_names_array(size_t number)
148 free_netbios_names_array();
150 smb_num_netbios_names = number + 1;
151 smb_my_netbios_names = SMB_MALLOC_ARRAY( char *, smb_num_netbios_names );
153 if (!smb_my_netbios_names)
156 memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names);
160 static bool set_my_netbios_names(const char *name, int i)
162 SAFE_FREE(smb_my_netbios_names[i]);
164 smb_my_netbios_names[i] = SMB_STRDUP(name);
165 if (!smb_my_netbios_names[i])
167 strupper_m(smb_my_netbios_names[i]);
171 /***********************************************************************
172 Free memory allocated to global objects
173 ***********************************************************************/
175 void gfree_names(void)
177 SAFE_FREE( smb_myname );
178 SAFE_FREE( smb_myworkgroup );
179 SAFE_FREE( smb_scope );
180 free_netbios_names_array();
181 free_local_machine_name();
184 void gfree_all( void )
194 const char *my_netbios_names(int i)
196 return smb_my_netbios_names[i];
199 bool set_netbios_aliases(const char **str_array)
203 /* Work out the max number of netbios aliases that we have */
204 for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ )
207 if ( global_myname() && *global_myname())
210 /* Allocate space for the netbios aliases */
211 if (!allocate_my_netbios_names_array(namecount))
214 /* Use the global_myname string first */
216 if ( global_myname() && *global_myname()) {
217 set_my_netbios_names( global_myname(), namecount );
223 for ( i = 0; str_array[i] != NULL; i++) {
225 bool duplicate = False;
227 /* Look for duplicates */
228 for( n=0; n<namecount; n++ ) {
229 if( strequal( str_array[i], my_netbios_names(n) ) ) {
235 if (!set_my_netbios_names(str_array[i], namecount))
244 /****************************************************************************
245 Common name initialization code.
246 ****************************************************************************/
248 bool init_names(void)
252 if (global_myname() == NULL || *global_myname() == '\0') {
253 if (!set_global_myname(myhostname())) {
254 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
259 if (!set_netbios_aliases(lp_netbios_aliases())) {
260 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
264 set_local_machine_name(global_myname(),false);
266 DEBUG( 5, ("Netbios name list:-\n") );
267 for( n=0; my_netbios_names(n); n++ ) {
268 DEBUGADD( 5, ("my_netbios_names[%d]=\"%s\"\n",
269 n, my_netbios_names(n) ) );
275 /**************************************************************************n
276 Code to cope with username/password auth options from the commandline.
277 Used mainly in client tools.
278 ****************************************************************************/
280 struct user_auth_info *user_auth_info_init(TALLOC_CTX *mem_ctx)
282 struct user_auth_info *result;
284 result = TALLOC_ZERO_P(mem_ctx, struct user_auth_info);
285 if (result == NULL) {
289 result->signing_state = Undefined;
293 const char *get_cmdline_auth_info_username(struct user_auth_info *auth_info)
295 if (!auth_info->username) {
298 return auth_info->username;
301 void set_cmdline_auth_info_username(struct user_auth_info *auth_info,
302 const char *username)
304 TALLOC_FREE(auth_info->username);
305 auth_info->username = talloc_strdup(auth_info, username);
306 if (!auth_info->username) {
311 const char *get_cmdline_auth_info_password(struct user_auth_info *auth_info)
313 if (!auth_info->password) {
316 return auth_info->password;
319 void set_cmdline_auth_info_password(struct user_auth_info *auth_info,
320 const char *password)
322 TALLOC_FREE(auth_info->password);
323 auth_info->password = talloc_strdup(auth_info, password);
324 if (!auth_info->password) {
327 auth_info->got_pass = true;
330 bool set_cmdline_auth_info_signing_state(struct user_auth_info *auth_info,
333 auth_info->signing_state = -1;
334 if (strequal(arg, "off") || strequal(arg, "no") ||
335 strequal(arg, "false")) {
336 auth_info->signing_state = false;
337 } else if (strequal(arg, "on") || strequal(arg, "yes") ||
338 strequal(arg, "true") || strequal(arg, "auto")) {
339 auth_info->signing_state = true;
340 } else if (strequal(arg, "force") || strequal(arg, "required") ||
341 strequal(arg, "forced")) {
342 auth_info->signing_state = Required;
349 int get_cmdline_auth_info_signing_state(struct user_auth_info *auth_info)
351 return auth_info->signing_state;
354 void set_cmdline_auth_info_use_kerberos(struct user_auth_info *auth_info,
357 auth_info->use_kerberos = b;
360 bool get_cmdline_auth_info_use_kerberos(struct user_auth_info *auth_info)
362 return auth_info->use_kerberos;
365 /* This should only be used by lib/popt_common.c JRA */
366 void set_cmdline_auth_info_use_krb5_ticket(struct user_auth_info *auth_info)
368 auth_info->use_kerberos = true;
369 auth_info->got_pass = true;
372 /* This should only be used by lib/popt_common.c JRA */
373 void set_cmdline_auth_info_smb_encrypt(struct user_auth_info *auth_info)
375 auth_info->smb_encrypt = true;
378 void set_cmdline_auth_info_use_machine_account(struct user_auth_info *auth_info)
380 auth_info->use_machine_account = true;
383 bool get_cmdline_auth_info_got_pass(struct user_auth_info *auth_info)
385 return auth_info->got_pass;
388 bool get_cmdline_auth_info_smb_encrypt(struct user_auth_info *auth_info)
390 return auth_info->smb_encrypt;
393 bool get_cmdline_auth_info_use_machine_account(struct user_auth_info *auth_info)
395 return auth_info->use_machine_account;
398 struct user_auth_info *get_cmdline_auth_info_copy(TALLOC_CTX *mem_ctx,
399 struct user_auth_info *src)
401 struct user_auth_info *result;
403 result = user_auth_info_init(mem_ctx);
404 if (result == NULL) {
410 result->username = talloc_strdup(
411 result, get_cmdline_auth_info_username(src));
412 result->password = talloc_strdup(
413 result, get_cmdline_auth_info_password(src));
414 if ((result->username == NULL) || (result->password == NULL)) {
422 bool set_cmdline_auth_info_machine_account_creds(struct user_auth_info *auth_info)
425 char *account = NULL;
427 if (!get_cmdline_auth_info_use_machine_account(auth_info)) {
431 if (!secrets_init()) {
432 d_printf("ERROR: Unable to open secrets database\n");
436 if (asprintf(&account, "%s$@%s", global_myname(), lp_realm()) < 0) {
440 pass = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
442 d_printf("ERROR: Unable to fetch machine password for "
444 account, lp_workgroup());
449 set_cmdline_auth_info_username(auth_info, account);
450 set_cmdline_auth_info_password(auth_info, pass);
458 /****************************************************************************
459 Add a gid to an array of gids if it's not already there.
460 ****************************************************************************/
462 bool add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid,
463 gid_t **gids, size_t *num_gids)
467 if ((*num_gids != 0) && (*gids == NULL)) {
469 * A former call to this routine has failed to allocate memory
474 for (i=0; i<*num_gids; i++) {
475 if ((*gids)[i] == gid) {
480 *gids = TALLOC_REALLOC_ARRAY(mem_ctx, *gids, gid_t, *num_gids+1);
486 (*gids)[*num_gids] = gid;
491 /*******************************************************************
492 Check if a file exists - call vfs_file_exist for samba files.
493 ********************************************************************/
495 bool file_exist_stat(const char *fname,SMB_STRUCT_STAT *sbuf)
501 if (sys_stat(fname,sbuf) != 0)
504 return((S_ISREG(sbuf->st_mode)) || (S_ISFIFO(sbuf->st_mode)));
507 /*******************************************************************
508 Check if a unix domain socket exists - call vfs_file_exist for samba files.
509 ********************************************************************/
511 bool socket_exist(const char *fname)
514 if (sys_stat(fname,&st) != 0)
517 return S_ISSOCK(st.st_mode);
520 /*******************************************************************
521 Check if a directory exists.
522 ********************************************************************/
524 bool directory_exist_stat(char *dname,SMB_STRUCT_STAT *st)
532 if (sys_stat(dname,st) != 0)
535 ret = S_ISDIR(st->st_mode);
541 /*******************************************************************
542 Returns the size in bytes of the named given the stat struct.
543 ********************************************************************/
545 uint64_t get_file_size_stat(const SMB_STRUCT_STAT *sbuf)
547 return sbuf->st_size;
550 /*******************************************************************
551 Returns the size in bytes of the named file.
552 ********************************************************************/
554 SMB_OFF_T get_file_size(char *file_name)
558 if(sys_stat(file_name,&buf) != 0)
559 return (SMB_OFF_T)-1;
560 return get_file_size_stat(&buf);
563 /*******************************************************************
564 Return a string representing an attribute for a file.
565 ********************************************************************/
567 char *attrib_string(uint16 mode)
573 if (mode & aVOLID) fstrcat(attrstr,"V");
574 if (mode & aDIR) fstrcat(attrstr,"D");
575 if (mode & aARCH) fstrcat(attrstr,"A");
576 if (mode & aHIDDEN) fstrcat(attrstr,"H");
577 if (mode & aSYSTEM) fstrcat(attrstr,"S");
578 if (mode & aRONLY) fstrcat(attrstr,"R");
580 return talloc_strdup(talloc_tos(), attrstr);
583 /*******************************************************************
584 Show a smb message structure.
585 ********************************************************************/
587 void show_msg(char *buf)
595 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
597 (int)CVAL(buf,smb_com),
598 (int)CVAL(buf,smb_rcls),
599 (int)CVAL(buf,smb_reh),
600 (int)SVAL(buf,smb_err),
601 (int)CVAL(buf,smb_flg),
602 (int)SVAL(buf,smb_flg2)));
603 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
604 (int)SVAL(buf,smb_tid),
605 (int)SVAL(buf,smb_pid),
606 (int)SVAL(buf,smb_uid),
607 (int)SVAL(buf,smb_mid)));
608 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
610 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
611 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
612 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
614 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
616 DEBUGADD(5,("smb_bcc=%d\n",bcc));
624 dump_data(10, (uint8 *)smb_buf(buf), bcc);
627 /*******************************************************************
628 Set the length and marker of an encrypted smb packet.
629 ********************************************************************/
631 void smb_set_enclen(char *buf,int len,uint16 enc_ctx_num)
633 _smb_setlen(buf,len);
637 SSVAL(buf,6,enc_ctx_num);
640 /*******************************************************************
641 Set the length and marker of an smb packet.
642 ********************************************************************/
644 void smb_setlen(char *buf,int len)
646 _smb_setlen(buf,len);
654 /*******************************************************************
655 Setup only the byte count for a smb message.
656 ********************************************************************/
658 int set_message_bcc(char *buf,int num_bytes)
660 int num_words = CVAL(buf,smb_wct);
661 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
662 _smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
663 return (smb_size + num_words*2 + num_bytes);
666 /*******************************************************************
667 Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
668 Return the bytes added
669 ********************************************************************/
671 ssize_t message_push_blob(uint8 **outbuf, DATA_BLOB blob)
673 size_t newlen = smb_len(*outbuf) + 4 + blob.length;
676 if (!(tmp = TALLOC_REALLOC_ARRAY(NULL, *outbuf, uint8, newlen))) {
677 DEBUG(0, ("talloc failed\n"));
682 memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
683 set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
687 /*******************************************************************
688 Reduce a file name, removing .. elements.
689 ********************************************************************/
691 static char *dos_clean_name(TALLOC_CTX *ctx, const char *s)
696 DEBUG(3,("dos_clean_name [%s]\n",s));
698 /* remove any double slashes */
699 str = talloc_all_string_sub(ctx, s, "\\\\", "\\");
704 /* Remove leading .\\ characters */
705 if(strncmp(str, ".\\", 2) == 0) {
706 trim_string(str, ".\\", NULL);
708 str = talloc_strdup(ctx, ".\\");
715 while ((p = strstr_m(str,"\\..\\")) != NULL) {
721 if ((p=strrchr_m(str,'\\')) != NULL) {
726 str = talloc_asprintf(ctx,
735 trim_string(str,NULL,"\\..");
736 return talloc_all_string_sub(ctx, str, "\\.\\", "\\");
739 /*******************************************************************
740 Reduce a file name, removing .. elements.
741 ********************************************************************/
743 char *unix_clean_name(TALLOC_CTX *ctx, const char *s)
748 DEBUG(3,("unix_clean_name [%s]\n",s));
750 /* remove any double slashes */
751 str = talloc_all_string_sub(ctx, s, "//","/");
756 /* Remove leading ./ characters */
757 if(strncmp(str, "./", 2) == 0) {
758 trim_string(str, "./", NULL);
760 str = talloc_strdup(ctx, "./");
767 while ((p = strstr_m(str,"/../")) != NULL) {
773 if ((p=strrchr_m(str,'/')) != NULL) {
778 str = talloc_asprintf(ctx,
787 trim_string(str,NULL,"/..");
788 return talloc_all_string_sub(ctx, str, "/./", "/");
791 char *clean_name(TALLOC_CTX *ctx, const char *s)
793 char *str = dos_clean_name(ctx, s);
797 return unix_clean_name(ctx, str);
800 /*******************************************************************
801 Close the low 3 fd's and open dev/null in their place.
802 ********************************************************************/
804 void close_low_fds(bool stderr_too)
816 /* try and use up these file descriptors, so silly
817 library routines writing to stdout etc won't cause havoc */
819 if (i == 2 && !stderr_too)
822 fd = sys_open("/dev/null",O_RDWR,0);
824 fd = sys_open("/dev/null",O_WRONLY,0);
826 DEBUG(0,("Can't open /dev/null\n"));
830 DEBUG(0,("Didn't get file descriptor %d\n",i));
837 /*******************************************************************
838 Write data into an fd at a given offset. Ignore seek errors.
839 ********************************************************************/
841 ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
846 if (pos == (SMB_OFF_T)-1) {
847 return write_data(fd, buffer, N);
849 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
851 ret = sys_pwrite(fd,buffer + total,N - total, pos);
852 if (ret == -1 && errno == ESPIPE) {
853 return write_data(fd, buffer + total,N - total);
856 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
865 return (ssize_t)total;
867 /* Use lseek and write_data. */
868 if (sys_lseek(fd, pos, SEEK_SET) == -1) {
869 if (errno != ESPIPE) {
873 return write_data(fd, buffer, N);
877 /*******************************************************************
878 Sleep for a specified number of milliseconds.
879 ********************************************************************/
881 void smb_msleep(unsigned int t)
883 #if defined(HAVE_NANOSLEEP)
884 struct timespec tval;
887 tval.tv_sec = t/1000;
888 tval.tv_nsec = 1000000*(t%1000);
892 ret = nanosleep(&tval, &tval);
893 } while (ret < 0 && errno == EINTR && (tval.tv_sec > 0 || tval.tv_nsec > 0));
895 unsigned int tdiff=0;
896 struct timeval tval,t1,t2;
903 tval.tv_sec = (t-tdiff)/1000;
904 tval.tv_usec = 1000*((t-tdiff)%1000);
906 /* Never wait for more than 1 sec. */
907 if (tval.tv_sec > 1) {
914 sys_select_intr(0,&fds,NULL,NULL,&tval);
917 if (t2.tv_sec < t1.tv_sec) {
918 /* Someone adjusted time... */
922 tdiff = TvalDiff(&t1,&t2);
927 /****************************************************************************
928 Become a daemon, discarding the controlling terminal.
929 ****************************************************************************/
931 void become_daemon(bool Fork, bool no_process_group)
939 /* detach from the terminal */
941 if (!no_process_group) setsid();
942 #elif defined(TIOCNOTTY)
943 if (!no_process_group) {
944 int i = sys_open("/dev/tty", O_RDWR, 0);
946 ioctl(i, (int) TIOCNOTTY, (char *)0);
950 #endif /* HAVE_SETSID */
952 /* Close fd's 0,1,2. Needed if started by rsh */
953 close_low_fds(False); /* Don't close stderr, let the debug system
954 attach it to the logfile */
957 bool reinit_after_fork(struct messaging_context *msg_ctx,
958 struct event_context *ev_ctx,
959 bool parent_longlived)
963 /* Reset the state of the random
964 * number generation system, so
965 * children do not get the same random
966 * numbers as each other */
967 set_need_random_reseed();
969 /* tdb needs special fork handling */
970 if (tdb_reopen_all(parent_longlived ? 1 : 0) == -1) {
971 DEBUG(0,("tdb_reopen_all failed.\n"));
976 event_context_reinit(ev_ctx);
981 * For clustering, we need to re-init our ctdbd connection after the
984 status = messaging_reinit(msg_ctx);
985 if (!NT_STATUS_IS_OK(status)) {
986 DEBUG(0,("messaging_reinit() failed: %s\n",
995 /****************************************************************************
996 Put up a yes/no prompt.
997 ****************************************************************************/
999 bool yesno(const char *p)
1004 if (!fgets(ans,sizeof(ans)-1,stdin))
1007 if (*ans == 'y' || *ans == 'Y')
1013 #if defined(PARANOID_MALLOC_CHECKER)
1015 /****************************************************************************
1016 Internal malloc wrapper. Externally visible.
1017 ****************************************************************************/
1019 void *malloc_(size_t size)
1025 return malloc(size);
1026 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
1029 /****************************************************************************
1030 Internal calloc wrapper. Not externally visible.
1031 ****************************************************************************/
1033 static void *calloc_(size_t count, size_t size)
1035 if (size == 0 || count == 0) {
1039 return calloc(count, size);
1040 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
1043 /****************************************************************************
1044 Internal realloc wrapper. Not externally visible.
1045 ****************************************************************************/
1047 static void *realloc_(void *ptr, size_t size)
1050 return realloc(ptr, size);
1051 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
1054 #endif /* PARANOID_MALLOC_CHECKER */
1056 /****************************************************************************
1058 ****************************************************************************/
1060 void *memalign_array(size_t el_size, size_t align, unsigned int count)
1062 if (count >= MAX_ALLOC_SIZE/el_size) {
1066 return sys_memalign(align, el_size*count);
1069 /****************************************************************************
1071 ****************************************************************************/
1073 void *calloc_array(size_t size, size_t nmemb)
1075 if (nmemb >= MAX_ALLOC_SIZE/size) {
1078 if (size == 0 || nmemb == 0) {
1081 #if defined(PARANOID_MALLOC_CHECKER)
1082 return calloc_(nmemb, size);
1084 return calloc(nmemb, size);
1088 /****************************************************************************
1089 Expand a pointer to be a particular size.
1090 Note that this version of Realloc has an extra parameter that decides
1091 whether to free the passed in storage on allocation failure or if the
1094 This is designed for use in the typical idiom of :
1096 p = SMB_REALLOC(p, size)
1101 and not to have to keep track of the old 'p' contents to free later, nor
1102 to worry if the size parameter was zero. In the case where NULL is returned
1103 we guarentee that p has been freed.
1105 If free later semantics are desired, then pass 'free_old_on_error' as False which
1106 guarentees that the old contents are not freed on error, even if size == 0. To use
1109 tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
1117 Changes were instigated by Coverity error checking. JRA.
1118 ****************************************************************************/
1120 void *Realloc(void *p, size_t size, bool free_old_on_error)
1125 if (free_old_on_error) {
1128 DEBUG(2,("Realloc asked for 0 bytes\n"));
1132 #if defined(PARANOID_MALLOC_CHECKER)
1134 ret = (void *)malloc_(size);
1136 ret = (void *)realloc_(p,size);
1140 ret = (void *)malloc(size);
1142 ret = (void *)realloc(p,size);
1147 if (free_old_on_error && p) {
1150 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
1156 /****************************************************************************
1157 (Hopefully) efficient array append.
1158 ****************************************************************************/
1160 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
1161 void *element, void *_array, uint32 *num_elements,
1162 ssize_t *array_size)
1164 void **array = (void **)_array;
1166 if (*array_size < 0) {
1170 if (*array == NULL) {
1171 if (*array_size == 0) {
1175 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1179 *array = TALLOC(mem_ctx, element_size * (*array_size));
1180 if (*array == NULL) {
1185 if (*num_elements == *array_size) {
1188 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1192 *array = TALLOC_REALLOC(mem_ctx, *array,
1193 element_size * (*array_size));
1195 if (*array == NULL) {
1200 memcpy((char *)(*array) + element_size*(*num_elements),
1201 element, element_size);
1211 /****************************************************************************
1212 Get my own domain name, or "" if we have none.
1213 ****************************************************************************/
1215 char *get_mydnsdomname(TALLOC_CTX *ctx)
1217 const char *domname;
1220 domname = get_mydnsfullname();
1225 p = strchr_m(domname, '.');
1228 return talloc_strdup(ctx, p);
1230 return talloc_strdup(ctx, "");
1234 /****************************************************************************
1235 Interpret a protocol description string, with a default.
1236 ****************************************************************************/
1238 int interpret_protocol(const char *str,int def)
1240 if (strequal(str,"NT1"))
1241 return(PROTOCOL_NT1);
1242 if (strequal(str,"LANMAN2"))
1243 return(PROTOCOL_LANMAN2);
1244 if (strequal(str,"LANMAN1"))
1245 return(PROTOCOL_LANMAN1);
1246 if (strequal(str,"CORE"))
1247 return(PROTOCOL_CORE);
1248 if (strequal(str,"COREPLUS"))
1249 return(PROTOCOL_COREPLUS);
1250 if (strequal(str,"CORE+"))
1251 return(PROTOCOL_COREPLUS);
1253 DEBUG(0,("Unrecognised protocol level %s\n",str));
1259 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1260 /******************************************************************
1261 Remove any mount options such as -rsize=2048,wsize=2048 etc.
1262 Based on a fix from <Thomas.Hepper@icem.de>.
1263 Returns a malloc'ed string.
1264 *******************************************************************/
1266 static char *strip_mount_options(TALLOC_CTX *ctx, const char *str)
1269 const char *p = str;
1270 while(*p && !isspace(*p))
1272 while(*p && isspace(*p))
1275 return talloc_strdup(ctx, p);
1281 /*******************************************************************
1282 Patch from jkf@soton.ac.uk
1283 Split Luke's automount_server into YP lookup and string splitter
1284 so can easily implement automount_path().
1285 Returns a malloc'ed string.
1286 *******************************************************************/
1288 #ifdef WITH_NISPLUS_HOME
1289 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
1293 char *nis_map = (char *)lp_nis_home_map_name();
1295 char buffer[NIS_MAXATTRVAL + 1];
1300 snprintf(buffer, sizeof(buffer), "[key=%s],%s", user_name, nis_map);
1301 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
1303 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
1304 if (result->status != NIS_SUCCESS) {
1305 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
1307 object = result->objects.objects_val;
1308 if (object->zo_data.zo_type == ENTRY_OBJ) {
1309 entry = &object->zo_data.objdata_u.en_data;
1310 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
1311 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
1313 value = talloc_strdup(ctx,
1314 entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
1316 nis_freeresult(result);
1319 value = talloc_string_sub(ctx,
1326 nis_freeresult(result);
1329 value = strip_mount_options(ctx, value);
1330 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n",
1335 #else /* WITH_NISPLUS_HOME */
1337 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
1341 int nis_error; /* returned by yp all functions */
1342 char *nis_result; /* yp_match inits this */
1343 int nis_result_len; /* and set this */
1344 char *nis_domain; /* yp_get_default_domain inits this */
1345 char *nis_map = (char *)lp_nis_home_map_name();
1347 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
1348 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
1352 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
1354 if ((nis_error = yp_match(nis_domain, nis_map, user_name,
1355 strlen(user_name), &nis_result,
1356 &nis_result_len)) == 0) {
1357 value = talloc_strdup(ctx, nis_result);
1361 value = strip_mount_options(ctx, value);
1362 } else if(nis_error == YPERR_KEY) {
1363 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
1364 user_name, nis_map));
1365 DEBUG(3, ("using defaults for server and home directory\n"));
1367 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1368 yperr_string(nis_error), user_name, nis_map));
1372 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, value));
1376 #endif /* WITH_NISPLUS_HOME */
1379 /****************************************************************************
1380 Check if a process exists. Does this work on all unixes?
1381 ****************************************************************************/
1383 bool process_exists(const struct server_id pid)
1385 if (procid_is_me(&pid)) {
1389 if (procid_is_local(&pid)) {
1390 return (kill(pid.pid,0) == 0 || errno != ESRCH);
1393 #ifdef CLUSTER_SUPPORT
1394 return ctdbd_process_exists(messaging_ctdbd_connection(), pid.vnn,
1401 /*******************************************************************
1402 Convert a uid into a user name.
1403 ********************************************************************/
1405 const char *uidtoname(uid_t uid)
1407 TALLOC_CTX *ctx = talloc_tos();
1409 struct passwd *pass = NULL;
1411 pass = getpwuid_alloc(ctx,uid);
1413 name = talloc_strdup(ctx,pass->pw_name);
1416 name = talloc_asprintf(ctx,
1423 /*******************************************************************
1424 Convert a gid into a group name.
1425 ********************************************************************/
1427 char *gidtoname(gid_t gid)
1431 grp = getgrgid(gid);
1433 return talloc_strdup(talloc_tos(), grp->gr_name);
1436 return talloc_asprintf(talloc_tos(),
1442 /*******************************************************************
1443 Convert a user name into a uid.
1444 ********************************************************************/
1446 uid_t nametouid(const char *name)
1448 struct passwd *pass;
1452 pass = getpwnam_alloc(talloc_autofree_context(), name);
1459 u = (uid_t)strtol(name, &p, 0);
1460 if ((p != name) && (*p == '\0'))
1466 /*******************************************************************
1467 Convert a name to a gid_t if possible. Return -1 if not a group.
1468 ********************************************************************/
1470 gid_t nametogid(const char *name)
1476 g = (gid_t)strtol(name, &p, 0);
1477 if ((p != name) && (*p == '\0'))
1480 grp = sys_getgrnam(name);
1482 return(grp->gr_gid);
1486 /*******************************************************************
1487 Something really nasty happened - panic !
1488 ********************************************************************/
1490 void smb_panic(const char *const why)
1498 if (global_clobber_region_function) {
1499 DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1500 global_clobber_region_function,
1501 global_clobber_region_line));
1506 DEBUG(0,("PANIC (pid %llu): %s\n",
1507 (unsigned long long)sys_getpid(), why));
1510 cmd = lp_panic_action();
1512 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1513 result = system(cmd);
1516 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1519 DEBUG(0, ("smb_panic(): action returned status %d\n",
1520 WEXITSTATUS(result)));
1526 /*******************************************************************
1527 Print a backtrace of the stack to the debug log. This function
1528 DELIBERATELY LEAKS MEMORY. The expectation is that you should
1529 exit shortly after calling it.
1530 ********************************************************************/
1532 #ifdef HAVE_LIBUNWIND_H
1533 #include <libunwind.h>
1536 #ifdef HAVE_EXECINFO_H
1537 #include <execinfo.h>
1540 #ifdef HAVE_LIBEXC_H
1544 void log_stack_trace(void)
1546 #ifdef HAVE_LIBUNWIND
1547 /* Try to use libunwind before any other technique since on ia64
1548 * libunwind correctly walks the stack in more circumstances than
1551 unw_cursor_t cursor;
1556 unw_word_t ip, sp, off;
1558 procname[sizeof(procname) - 1] = '\0';
1560 if (unw_getcontext(&uc) != 0) {
1561 goto libunwind_failed;
1564 if (unw_init_local(&cursor, &uc) != 0) {
1565 goto libunwind_failed;
1568 DEBUG(0, ("BACKTRACE:\n"));
1572 unw_get_reg(&cursor, UNW_REG_IP, &ip);
1573 unw_get_reg(&cursor, UNW_REG_SP, &sp);
1575 switch (unw_get_proc_name(&cursor,
1576 procname, sizeof(procname) - 1, &off) ) {
1580 /* Name truncated. */
1581 DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
1582 i, procname, (long long)off,
1583 (long long)ip, (long long) sp));
1586 /* case -UNW_ENOINFO: */
1587 /* case -UNW_EUNSPEC: */
1588 /* No symbol name found. */
1589 DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
1590 i, "<unknown symbol>",
1591 (long long)ip, (long long) sp));
1594 } while (unw_step(&cursor) > 0);
1599 DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
1601 #elif HAVE_BACKTRACE_SYMBOLS
1602 void *backtrace_stack[BACKTRACE_STACK_SIZE];
1603 size_t backtrace_size;
1604 char **backtrace_strings;
1606 /* get the backtrace (stack frames) */
1607 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1608 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1610 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1611 (unsigned long)backtrace_size));
1613 if (backtrace_strings) {
1616 for (i = 0; i < backtrace_size; i++)
1617 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1619 /* Leak the backtrace_strings, rather than risk what free() might do */
1624 /* The IRIX libexc library provides an API for unwinding the stack. See
1625 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1626 * since we are about to abort anyway, it hardly matters.
1629 #define NAMESIZE 32 /* Arbitrary */
1631 __uint64_t addrs[BACKTRACE_STACK_SIZE];
1632 char * names[BACKTRACE_STACK_SIZE];
1633 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
1640 ZERO_ARRAY(namebuf);
1642 /* We need to be root so we can open our /proc entry to walk
1643 * our stack. It also helps when we want to dump core.
1647 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
1648 names[i] = namebuf + (i * NAMESIZE);
1651 levels = trace_back_stack(0, addrs, names,
1652 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
1654 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
1655 for (i = 0; i < levels; i++) {
1656 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
1661 DEBUG(0, ("unable to produce a stack trace on this platform\n"));
1665 /*******************************************************************
1666 A readdir wrapper which just returns the file name.
1667 ********************************************************************/
1669 const char *readdirname(SMB_STRUCT_DIR *p)
1671 SMB_STRUCT_DIRENT *ptr;
1677 ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1681 dname = ptr->d_name;
1688 #ifdef HAVE_BROKEN_READDIR_NAME
1689 /* using /usr/ucb/cc is BAD */
1693 return talloc_strdup(talloc_tos(), dname);
1696 /*******************************************************************
1697 Utility function used to decide if the last component
1698 of a path matches a (possibly wildcarded) entry in a namelist.
1699 ********************************************************************/
1701 bool is_in_path(const char *name, name_compare_entry *namelist, bool case_sensitive)
1703 const char *last_component;
1705 /* if we have no list it's obviously not in the path */
1706 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1710 DEBUG(8, ("is_in_path: %s\n", name));
1712 /* Get the last component of the unix name. */
1713 last_component = strrchr_m(name, '/');
1714 if (!last_component) {
1715 last_component = name;
1717 last_component++; /* Go past '/' */
1720 for(; namelist->name != NULL; namelist++) {
1721 if(namelist->is_wild) {
1722 if (mask_match(last_component, namelist->name, case_sensitive)) {
1723 DEBUG(8,("is_in_path: mask match succeeded\n"));
1727 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1728 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1729 DEBUG(8,("is_in_path: match succeeded\n"));
1734 DEBUG(8,("is_in_path: match not found\n"));
1738 /*******************************************************************
1739 Strip a '/' separated list into an array of
1740 name_compare_enties structures suitable for
1741 passing to is_in_path(). We do this for
1742 speed so we can pre-parse all the names in the list
1743 and don't do it for each call to is_in_path().
1744 namelist is modified here and is assumed to be
1745 a copy owned by the caller.
1746 We also check if the entry contains a wildcard to
1747 remove a potentially expensive call to mask_match
1749 ********************************************************************/
1751 void set_namearray(name_compare_entry **ppname_array, const char *namelist)
1754 const char *nameptr = namelist;
1755 int num_entries = 0;
1758 (*ppname_array) = NULL;
1760 if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1763 /* We need to make two passes over the string. The
1764 first to count the number of elements, the second
1769 if ( *nameptr == '/' ) {
1770 /* cope with multiple (useless) /s) */
1774 /* find the next / */
1775 name_end = strchr_m(nameptr, '/');
1777 /* oops - the last check for a / didn't find one. */
1778 if (name_end == NULL)
1781 /* next segment please */
1782 nameptr = name_end + 1;
1786 if(num_entries == 0)
1789 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1790 DEBUG(0,("set_namearray: malloc fail\n"));
1794 /* Now copy out the names */
1798 if ( *nameptr == '/' ) {
1799 /* cope with multiple (useless) /s) */
1803 /* find the next / */
1804 if ((name_end = strchr_m(nameptr, '/')) != NULL)
1807 /* oops - the last check for a / didn't find one. */
1808 if(name_end == NULL)
1811 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1812 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1813 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1817 /* next segment please */
1818 nameptr = name_end + 1;
1822 (*ppname_array)[i].name = NULL;
1827 /****************************************************************************
1828 Routine to free a namearray.
1829 ****************************************************************************/
1831 void free_namearray(name_compare_entry *name_array)
1835 if(name_array == NULL)
1838 for(i=0; name_array[i].name!=NULL; i++)
1839 SAFE_FREE(name_array[i].name);
1840 SAFE_FREE(name_array);
1844 #define DBGC_CLASS DBGC_LOCKING
1846 /****************************************************************************
1847 Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
1848 is dealt with in posix.c
1849 Returns True if we have information regarding this lock region (and returns
1850 F_UNLCK in *ptype if the region is unlocked). False if the call failed.
1851 ****************************************************************************/
1853 bool fcntl_getlock(int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1855 SMB_STRUCT_FLOCK lock;
1858 DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
1859 fd,(double)*poffset,(double)*pcount,*ptype));
1861 lock.l_type = *ptype;
1862 lock.l_whence = SEEK_SET;
1863 lock.l_start = *poffset;
1864 lock.l_len = *pcount;
1867 ret = sys_fcntl_ptr(fd,SMB_F_GETLK,&lock);
1871 DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
1872 (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
1877 *ptype = lock.l_type;
1878 *poffset = lock.l_start;
1879 *pcount = lock.l_len;
1882 DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
1883 fd, (int)lock.l_type, (unsigned int)lock.l_pid));
1888 #define DBGC_CLASS DBGC_ALL
1890 /*******************************************************************
1891 Is the name specified one of my netbios names.
1892 Returns true if it is equal, false otherwise.
1893 ********************************************************************/
1895 bool is_myname(const char *s)
1900 for (n=0; my_netbios_names(n); n++) {
1901 if (strequal(my_netbios_names(n), s)) {
1906 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1910 /*******************************************************************
1911 Is the name specified our workgroup/domain.
1912 Returns true if it is equal, false otherwise.
1913 ********************************************************************/
1915 bool is_myworkgroup(const char *s)
1919 if (strequal(s, lp_workgroup())) {
1923 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1927 /*******************************************************************
1928 we distinguish between 2K and XP by the "Native Lan Manager" string
1929 WinXP => "Windows 2002 5.1"
1930 WinXP 64bit => "Windows XP 5.2"
1931 Win2k => "Windows 2000 5.0"
1932 NT4 => "Windows NT 4.0"
1933 Win9x => "Windows 4.0"
1934 Windows 2003 doesn't set the native lan manager string but
1935 they do set the domain to "Windows 2003 5.2" (probably a bug).
1936 ********************************************************************/
1938 void ra_lanman_string( const char *native_lanman )
1940 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1941 set_remote_arch( RA_WINXP );
1942 else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
1943 set_remote_arch( RA_WINXP64 );
1944 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1945 set_remote_arch( RA_WIN2K3 );
1948 static const char *remote_arch_str;
1950 const char *get_remote_arch_str(void)
1952 if (!remote_arch_str) {
1955 return remote_arch_str;
1958 /*******************************************************************
1959 Set the horrid remote_arch string based on an enum.
1960 ********************************************************************/
1962 void set_remote_arch(enum remote_arch_types type)
1967 remote_arch_str = "WfWg";
1970 remote_arch_str = "OS2";
1973 remote_arch_str = "Win95";
1976 remote_arch_str = "WinNT";
1979 remote_arch_str = "Win2K";
1982 remote_arch_str = "WinXP";
1985 remote_arch_str = "WinXP64";
1988 remote_arch_str = "Win2K3";
1991 remote_arch_str = "Vista";
1994 remote_arch_str = "Samba";
1997 remote_arch_str = "CIFSFS";
2000 ra_type = RA_UNKNOWN;
2001 remote_arch_str = "UNKNOWN";
2005 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
2009 /*******************************************************************
2010 Get the remote_arch type.
2011 ********************************************************************/
2013 enum remote_arch_types get_remote_arch(void)
2018 const char *tab_depth(int level, int depth)
2020 if( CHECK_DEBUGLVL(level) ) {
2021 dbgtext("%*s", depth*4, "");
2026 /*****************************************************************************
2027 Provide a checksum on a string
2029 Input: s - the null-terminated character string for which the checksum
2032 Output: The checksum value calculated for s.
2033 *****************************************************************************/
2035 int str_checksum(const char *s)
2043 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
2050 /*****************************************************************
2051 Zero a memory area then free it. Used to catch bugs faster.
2052 *****************************************************************/
2054 void zero_free(void *p, size_t size)
2060 /*****************************************************************
2061 Set our open file limit to a requested max and return the limit.
2062 *****************************************************************/
2064 int set_maxfiles(int requested_max)
2066 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
2068 int saved_current_limit;
2070 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2071 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
2074 return requested_max;
2078 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
2079 * account for the extra fd we need
2080 * as well as the log files and standard
2081 * handles etc. Save the limit we want to set in case
2082 * we are running on an OS that doesn't support this limit (AIX)
2083 * which always returns RLIM_INFINITY for rlp.rlim_max.
2086 /* Try raising the hard (max) limit to the requested amount. */
2088 #if defined(RLIM_INFINITY)
2089 if (rlp.rlim_max != RLIM_INFINITY) {
2090 int orig_max = rlp.rlim_max;
2092 if ( rlp.rlim_max < requested_max )
2093 rlp.rlim_max = requested_max;
2095 /* This failing is not an error - many systems (Linux) don't
2096 support our default request of 10,000 open files. JRA. */
2098 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2099 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
2100 (int)rlp.rlim_max, strerror(errno) ));
2102 /* Set failed - restore original value from get. */
2103 rlp.rlim_max = orig_max;
2108 /* Now try setting the soft (current) limit. */
2110 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
2112 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2113 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
2114 (int)rlp.rlim_cur, strerror(errno) ));
2116 return saved_current_limit;
2119 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2120 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
2123 return saved_current_limit;
2126 #if defined(RLIM_INFINITY)
2127 if(rlp.rlim_cur == RLIM_INFINITY)
2128 return saved_current_limit;
2131 if((int)rlp.rlim_cur > saved_current_limit)
2132 return saved_current_limit;
2134 return rlp.rlim_cur;
2135 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
2137 * No way to know - just guess...
2139 return requested_max;
2143 /*****************************************************************
2144 Possibly replace mkstemp if it is broken.
2145 *****************************************************************/
2147 int smb_mkstemp(char *name_template)
2149 #if HAVE_SECURE_MKSTEMP
2150 return mkstemp(name_template);
2152 /* have a reasonable go at emulating it. Hope that
2153 the system mktemp() isn't completly hopeless */
2154 char *p = mktemp(name_template);
2157 return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
2161 /*****************************************************************
2162 malloc that aborts with smb_panic on fail or zero size.
2163 *****************************************************************/
2165 void *smb_xmalloc_array(size_t size, unsigned int count)
2169 smb_panic("smb_xmalloc_array: called with zero size");
2171 if (count >= MAX_ALLOC_SIZE/size) {
2172 smb_panic("smb_xmalloc_array: alloc size too large");
2174 if ((p = SMB_MALLOC(size*count)) == NULL) {
2175 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
2176 (unsigned long)size, (unsigned long)count));
2177 smb_panic("smb_xmalloc_array: malloc failed");
2183 vasprintf that aborts on malloc fail
2186 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2193 n = vasprintf(ptr, format, ap2);
2194 if (n == -1 || ! *ptr) {
2195 smb_panic("smb_xvasprintf: out of memory");
2201 /*****************************************************************
2202 Get local hostname and cache result.
2203 *****************************************************************/
2205 char *myhostname(void)
2209 /* This is cached forever so
2210 * use talloc_autofree_context() ctx. */
2211 ret = get_myname(talloc_autofree_context());
2217 * @brief Returns an absolute path to a file concatenating the provided
2218 * @a rootpath and @a basename
2220 * @param name Filename, relative to @a rootpath
2222 * @retval Pointer to a string containing the full path.
2225 static char *xx_path(const char *name, const char *rootpath)
2229 fname = talloc_strdup(talloc_tos(), rootpath);
2233 trim_string(fname,"","/");
2235 if (!directory_exist(fname)) {
2236 if (!mkdir(fname,0755))
2237 DEBUG(1, ("Unable to create directory %s for file %s. "
2238 "Error was %s\n", fname, name, strerror(errno)));
2241 return talloc_asprintf(talloc_tos(),
2248 * @brief Returns an absolute path to a file in the Samba lock directory.
2250 * @param name File to find, relative to LOCKDIR.
2252 * @retval Pointer to a talloc'ed string containing the full path.
2255 char *lock_path(const char *name)
2257 return xx_path(name, lp_lockdir());
2261 * @brief Returns an absolute path to a file in the Samba pid directory.
2263 * @param name File to find, relative to PIDDIR.
2265 * @retval Pointer to a talloc'ed string containing the full path.
2268 char *pid_path(const char *name)
2270 return xx_path(name, lp_piddir());
2274 * @brief Returns an absolute path to a file in the Samba lib directory.
2276 * @param name File to find, relative to LIBDIR.
2278 * @retval Pointer to a string containing the full path.
2281 char *lib_path(const char *name)
2283 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_LIBDIR(), name);
2287 * @brief Returns an absolute path to a file in the Samba modules directory.
2289 * @param name File to find, relative to MODULESDIR.
2291 * @retval Pointer to a string containing the full path.
2294 char *modules_path(const char *name)
2296 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_MODULESDIR(), name);
2300 * @brief Returns an absolute path to a file in the Samba data directory.
2302 * @param name File to find, relative to CODEPAGEDIR.
2304 * @retval Pointer to a talloc'ed string containing the full path.
2307 char *data_path(const char *name)
2309 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_CODEPAGEDIR(), name);
2313 * @brief Returns an absolute path to a file in the Samba state directory.
2315 * @param name File to find, relative to STATEDIR.
2317 * @retval Pointer to a talloc'ed string containing the full path.
2320 char *state_path(const char *name)
2322 return xx_path(name, lp_statedir());
2326 * @brief Returns an absolute path to a file in the Samba cache directory.
2328 * @param name File to find, relative to CACHEDIR.
2330 * @retval Pointer to a talloc'ed string containing the full path.
2333 char *cache_path(const char *name)
2335 return xx_path(name, lp_cachedir());
2339 * @brief Returns the platform specific shared library extension.
2341 * @retval Pointer to a const char * containing the extension.
2344 const char *shlib_ext(void)
2346 return get_dyn_SHLIBEXT();
2349 /*******************************************************************
2350 Given a filename - get its directory name
2351 ********************************************************************/
2353 bool parent_dirname(TALLOC_CTX *mem_ctx, const char *dir, char **parent,
2359 p = strrchr_m(dir, '/'); /* Find final '/', if any */
2362 if (!(*parent = talloc_strdup(mem_ctx, "."))) {
2373 if (!(*parent = (char *)TALLOC_MEMDUP(mem_ctx, dir, len+1))) {
2376 (*parent)[len] = '\0';
2384 /*******************************************************************
2385 Determine if a pattern contains any Microsoft wildcard characters.
2386 *******************************************************************/
2388 bool ms_has_wild(const char *s)
2392 if (lp_posix_pathnames()) {
2393 /* With posix pathnames no characters are wild. */
2397 while ((c = *s++)) {
2410 bool ms_has_wild_w(const smb_ucs2_t *s)
2413 if (!s) return False;
2414 while ((c = *s++)) {
2416 case UCS2_CHAR('*'):
2417 case UCS2_CHAR('?'):
2418 case UCS2_CHAR('<'):
2419 case UCS2_CHAR('>'):
2420 case UCS2_CHAR('"'):
2427 /*******************************************************************
2428 A wrapper that handles case sensitivity and the special handling
2430 *******************************************************************/
2432 bool mask_match(const char *string, const char *pattern, bool is_case_sensitive)
2434 if (strcmp(string,"..") == 0)
2436 if (strcmp(pattern,".") == 0)
2439 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
2442 /*******************************************************************
2443 A wrapper that handles case sensitivity and the special handling
2444 of the ".." name. Varient that is only called by old search code which requires
2445 pattern translation.
2446 *******************************************************************/
2448 bool mask_match_search(const char *string, const char *pattern, bool is_case_sensitive)
2450 if (strcmp(string,"..") == 0)
2452 if (strcmp(pattern,".") == 0)
2455 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
2458 /*******************************************************************
2459 A wrapper that handles a list of patters and calls mask_match()
2460 on each. Returns True if any of the patterns match.
2461 *******************************************************************/
2463 bool mask_match_list(const char *string, char **list, int listLen, bool is_case_sensitive)
2465 while (listLen-- > 0) {
2466 if (mask_match(string, *list++, is_case_sensitive))
2472 /*********************************************************
2473 Recursive routine that is called by unix_wild_match.
2474 *********************************************************/
2476 static bool unix_do_match(const char *regexp, const char *str)
2480 for( p = regexp; *p && *str; ) {
2491 * Look for a character matching
2492 * the one after the '*'.
2496 return true; /* Automatic match */
2499 while(*str && (*p != *str))
2503 * Patch from weidel@multichart.de. In the case of the regexp
2504 * '*XX*' we want to ensure there are at least 2 'X' characters
2505 * in the string after the '*' for a match to be made.
2512 * Eat all the characters that match, but count how many there were.
2515 while(*str && (*p == *str)) {
2521 * Now check that if the regexp had n identical characters that
2522 * matchcount had at least that many matches.
2525 while ( *(p+1) && (*(p+1) == *p)) {
2530 if ( matchcount <= 0 )
2534 str--; /* We've eaten the match char after the '*' */
2536 if(unix_do_match(p, str))
2558 if (!*p && str[0] == '.' && str[1] == 0)
2561 if (!*str && *p == '?') {
2567 if(!*str && (*p == '*' && p[1] == '\0'))
2573 /*******************************************************************
2574 Simple case insensitive interface to a UNIX wildcard matcher.
2575 Returns True if match, False if not.
2576 *******************************************************************/
2578 bool unix_wild_match(const char *pattern, const char *string)
2580 TALLOC_CTX *ctx = talloc_stackframe();
2586 p2 = talloc_strdup(ctx,pattern);
2587 s2 = talloc_strdup(ctx,string);
2595 /* Remove any *? and ** from the pattern as they are meaningless */
2596 for(p = p2; *p; p++) {
2597 while( *p == '*' && (p[1] == '?' ||p[1] == '*')) {
2598 memmove(&p[1], &p[2], strlen(&p[2])+1);
2602 if (strequal(p2,"*")) {
2607 ret = unix_do_match(p2, s2);
2612 /**********************************************************************
2613 Converts a name to a fully qualified domain name.
2614 Returns true if lookup succeeded, false if not (then fqdn is set to name)
2615 Note we deliberately use gethostbyname here, not getaddrinfo as we want
2616 to examine the h_aliases and I don't know how to do that with getaddrinfo.
2617 ***********************************************************************/
2619 bool name_to_fqdn(fstring fqdn, const char *name)
2622 struct hostent *hp = gethostbyname(name);
2624 if (!hp || !hp->h_name || !*hp->h_name) {
2625 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
2626 fstrcpy(fqdn, name);
2630 /* Find out if the fqdn is returned as an alias
2631 * to cope with /etc/hosts files where the first
2632 * name is not the fqdn but the short name */
2633 if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
2635 for (i = 0; hp->h_aliases[i]; i++) {
2636 if (strchr_m(hp->h_aliases[i], '.')) {
2637 full = hp->h_aliases[i];
2642 if (full && (StrCaseCmp(full, "localhost.localdomain") == 0)) {
2643 DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
2644 DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
2645 DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
2646 DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
2653 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
2654 fstrcpy(fqdn, full);
2658 /**********************************************************************
2659 Append a DATA_BLOB to a talloc'ed object
2660 ***********************************************************************/
2662 void *talloc_append_blob(TALLOC_CTX *mem_ctx, void *buf, DATA_BLOB blob)
2664 size_t old_size = 0;
2667 if (blob.length == 0) {
2672 old_size = talloc_get_size(buf);
2675 result = (char *)TALLOC_REALLOC(mem_ctx, buf, old_size + blob.length);
2676 if (result == NULL) {
2680 memcpy(result + old_size, blob.data, blob.length);
2684 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
2686 switch (share_access & ~FILE_SHARE_DELETE) {
2687 case FILE_SHARE_NONE:
2689 case FILE_SHARE_READ:
2691 case FILE_SHARE_WRITE:
2693 case FILE_SHARE_READ|FILE_SHARE_WRITE:
2696 if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
2698 } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
2705 pid_t procid_to_pid(const struct server_id *proc)
2710 static uint32 my_vnn = NONCLUSTER_VNN;
2712 void set_my_vnn(uint32 vnn)
2714 DEBUG(10, ("vnn pid %d = %u\n", (int)sys_getpid(), (unsigned int)vnn));
2718 uint32 get_my_vnn(void)
2723 struct server_id pid_to_procid(pid_t pid)
2725 struct server_id result;
2727 #ifdef CLUSTER_SUPPORT
2728 result.vnn = my_vnn;
2733 struct server_id procid_self(void)
2735 return pid_to_procid(sys_getpid());
2738 struct server_id server_id_self(void)
2740 return procid_self();
2743 bool procid_equal(const struct server_id *p1, const struct server_id *p2)
2745 if (p1->pid != p2->pid)
2747 #ifdef CLUSTER_SUPPORT
2748 if (p1->vnn != p2->vnn)
2754 bool cluster_id_equal(const struct server_id *id1,
2755 const struct server_id *id2)
2757 return procid_equal(id1, id2);
2760 bool procid_is_me(const struct server_id *pid)
2762 if (pid->pid != sys_getpid())
2764 #ifdef CLUSTER_SUPPORT
2765 if (pid->vnn != my_vnn)
2771 struct server_id interpret_pid(const char *pid_string)
2773 #ifdef CLUSTER_SUPPORT
2774 unsigned int vnn, pid;
2775 struct server_id result;
2776 if (sscanf(pid_string, "%u:%u", &vnn, &pid) == 2) {
2780 else if (sscanf(pid_string, "%u", &pid) == 1) {
2781 result.vnn = get_my_vnn();
2785 result.vnn = NONCLUSTER_VNN;
2790 return pid_to_procid(atoi(pid_string));
2794 char *procid_str(TALLOC_CTX *mem_ctx, const struct server_id *pid)
2796 #ifdef CLUSTER_SUPPORT
2797 if (pid->vnn == NONCLUSTER_VNN) {
2798 return talloc_asprintf(mem_ctx,
2803 return talloc_asprintf(mem_ctx,
2809 return talloc_asprintf(mem_ctx,
2815 char *procid_str_static(const struct server_id *pid)
2817 return procid_str(talloc_tos(), pid);
2820 bool procid_valid(const struct server_id *pid)
2822 return (pid->pid != -1);
2825 bool procid_is_local(const struct server_id *pid)
2827 #ifdef CLUSTER_SUPPORT
2828 return pid->vnn == my_vnn;
2834 int this_is_smp(void)
2836 #if defined(HAVE_SYSCONF)
2838 #if defined(SYSCONF_SC_NPROC_ONLN)
2839 return (sysconf(_SC_NPROC_ONLN) > 1) ? 1 : 0;
2840 #elif defined(SYSCONF_SC_NPROCESSORS_ONLN)
2841 return (sysconf(_SC_NPROCESSORS_ONLN) > 1) ? 1 : 0;
2851 /****************************************************************
2852 Check if offset/length fit into bufsize. Should probably be
2853 merged with is_offset_safe, but this would require a rewrite
2854 of lanman.c. Later :-)
2855 ****************************************************************/
2857 bool trans_oob(uint32_t bufsize, uint32_t offset, uint32_t length)
2859 if ((offset + length < offset) || (offset + length < length)) {
2863 if ((offset > bufsize) || (offset + length > bufsize)) {
2870 /****************************************************************
2871 Check if an offset into a buffer is safe.
2872 If this returns True it's safe to indirect into the byte at
2874 ****************************************************************/
2876 bool is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2878 const char *end_base = buf_base + buf_len;
2879 char *end_ptr = ptr + off;
2881 if (!buf_base || !ptr) {
2885 if (end_base < buf_base || end_ptr < ptr) {
2886 return False; /* wrap. */
2889 if (end_ptr < end_base) {
2895 /****************************************************************
2896 Return a safe pointer into a buffer, or NULL.
2897 ****************************************************************/
2899 char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2901 return is_offset_safe(buf_base, buf_len, ptr, off) ?
2905 /****************************************************************
2906 Return a safe pointer into a string within a buffer, or NULL.
2907 ****************************************************************/
2909 char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2911 if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
2914 /* Check if a valid string exists at this offset. */
2915 if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
2921 /****************************************************************
2922 Return an SVAL at a pointer, or failval if beyond the end.
2923 ****************************************************************/
2925 int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2928 * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
2931 if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
2934 return SVAL(ptr,off);
2937 /****************************************************************
2938 Return an IVAL at a pointer, or failval if beyond the end.
2939 ****************************************************************/
2941 int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2944 * Note we use off+3 here, not off+4 as IVAL accesses
2945 * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
2947 if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
2950 return IVAL(ptr,off);
2953 /****************************************************************
2954 Split DOM\user into DOM and user. Do not mix with winbind variants of that
2955 call (they take care of winbind separator and other winbind specific settings).
2956 ****************************************************************/
2958 void split_domain_user(TALLOC_CTX *mem_ctx,
2959 const char *full_name,
2963 const char *p = NULL;
2965 p = strchr_m(full_name, '\\');
2968 *domain = talloc_strndup(mem_ctx, full_name,
2969 PTR_DIFF(p, full_name));
2970 *user = talloc_strdup(mem_ctx, p+1);
2972 *domain = talloc_strdup(mem_ctx, "");
2973 *user = talloc_strdup(mem_ctx, full_name);
2979 Disable these now we have checked all code paths and ensured
2980 NULL returns on zero request. JRA.
2982 /****************************************************************
2983 talloc wrapper functions that guarentee a null pointer return
2985 ****************************************************************/
2987 #ifndef MAX_TALLOC_SIZE
2988 #define MAX_TALLOC_SIZE 0x10000000
2992 * talloc and zero memory.
2993 * - returns NULL if size is zero.
2996 void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name)
3004 p = talloc_named_const(ctx, size, name);
3007 memset(p, '\0', size);
3014 * memdup with a talloc.
3015 * - returns NULL if size is zero.
3018 void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name)
3026 newp = talloc_named_const(t, size, name);
3028 memcpy(newp, p, size);
3035 * alloc an array, checking for integer overflow in the array size.
3036 * - returns NULL if count or el_size are zero.
3039 void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
3041 if (count >= MAX_TALLOC_SIZE/el_size) {
3045 if (el_size == 0 || count == 0) {
3049 return talloc_named_const(ctx, el_size * count, name);
3053 * alloc an zero array, checking for integer overflow in the array size
3054 * - returns NULL if count or el_size are zero.
3057 void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
3059 if (count >= MAX_TALLOC_SIZE/el_size) {
3063 if (el_size == 0 || count == 0) {
3067 return _talloc_zero(ctx, el_size * count, name);
3071 * Talloc wrapper that returns NULL if size == 0.
3073 void *talloc_zeronull(const void *context, size_t size, const char *name)
3078 return talloc_named_const(context, size, name);
3082 /* Split a path name into filename and stream name components. Canonicalise
3083 * such that an implicit $DATA token is always explicit.
3085 * The "specification" of this function can be found in the
3086 * run_local_stream_name() function in torture.c, I've tried those
3087 * combinations against a W2k3 server.
3090 NTSTATUS split_ntfs_stream_name(TALLOC_CTX *mem_ctx, const char *fname,
3091 char **pbase, char **pstream)
3094 char *stream = NULL;
3095 char *sname; /* stream name */
3096 const char *stype; /* stream type */
3098 DEBUG(10, ("split_ntfs_stream_name called for [%s]\n", fname));
3100 sname = strchr_m(fname, ':');
3102 if (lp_posix_pathnames() || (sname == NULL)) {
3103 if (pbase != NULL) {
3104 base = talloc_strdup(mem_ctx, fname);
3105 NT_STATUS_HAVE_NO_MEMORY(base);
3110 if (pbase != NULL) {
3111 base = talloc_strndup(mem_ctx, fname, PTR_DIFF(sname, fname));
3112 NT_STATUS_HAVE_NO_MEMORY(base);
3117 stype = strchr_m(sname, ':');
3119 if (stype == NULL) {
3120 sname = talloc_strdup(mem_ctx, sname);
3124 if (StrCaseCmp(stype, ":$DATA") != 0) {
3126 * If there is an explicit stream type, so far we only
3127 * allow $DATA. Is there anything else allowed? -- vl
3129 DEBUG(10, ("[%s] is an invalid stream type\n", stype));
3131 return NT_STATUS_OBJECT_NAME_INVALID;
3133 sname = talloc_strndup(mem_ctx, sname, PTR_DIFF(stype, sname));
3137 if (sname == NULL) {
3139 return NT_STATUS_NO_MEMORY;
3142 if (sname[0] == '\0') {
3144 * no stream name, so no stream
3149 if (pstream != NULL) {
3150 stream = talloc_asprintf(mem_ctx, "%s:%s", sname, stype);
3151 if (stream == NULL) {
3154 return NT_STATUS_NO_MEMORY;
3157 * upper-case the type field
3159 strupper_m(strchr_m(stream, ':')+1);
3163 if (pbase != NULL) {
3166 if (pstream != NULL) {
3169 return NT_STATUS_OK;
3172 bool is_valid_policy_hnd(const POLICY_HND *hnd)
3176 return (memcmp(&tmp, hnd, sizeof(tmp)) != 0);
3179 bool policy_hnd_equal(const struct policy_handle *hnd1,
3180 const struct policy_handle *hnd2)
3182 if (!hnd1 || !hnd2) {
3186 return (memcmp(hnd1, hnd2, sizeof(*hnd1)) == 0);
3189 /****************************************************************
3190 strip off leading '\\' from a hostname
3191 ****************************************************************/
3193 const char *strip_hostname(const char *s)
3199 if (strlen_m(s) < 3) {
3203 if (s[0] == '\\') s++;
3204 if (s[0] == '\\') s++;
3209 struct read_pkt_state {
3210 struct event_context *ev;
3213 ssize_t (*more)(uint8_t *buf, size_t buflen, void *priv);
3217 static void read_pkt_done(struct async_req *subreq);
3219 struct async_req *read_pkt_send(TALLOC_CTX *mem_ctx,
3220 struct event_context *ev,
3221 int fd, size_t initial,
3222 ssize_t (*more)(uint8_t *buf, size_t buflen,
3226 struct async_req *result, *subreq;
3227 struct read_pkt_state *state;
3229 if (!async_req_setup(mem_ctx, &result, &state,
3230 struct read_pkt_state)) {
3237 state->buf = talloc_array(state, uint8_t, initial);
3238 if (state->buf == NULL) {
3241 subreq = recvall_send(state, ev, fd, state->buf, initial, 0);
3242 if (subreq == NULL) {
3245 subreq->async.fn = read_pkt_done;
3246 subreq->async.priv = result;
3249 TALLOC_FREE(result);
3253 static void read_pkt_done(struct async_req *subreq)
3255 struct async_req *req = talloc_get_type_abort(
3256 subreq->async.priv, struct async_req);
3257 struct read_pkt_state *state = talloc_get_type_abort(
3258 req->private_data, struct read_pkt_state);
3259 size_t current_size;
3264 received = recvall_recv(subreq, &err);
3265 TALLOC_FREE(subreq);
3266 if (received == -1) {
3267 async_req_error(req, err);
3270 current_size = talloc_get_size(state->buf);
3272 more = state->more(state->buf, current_size, state->priv);
3274 async_req_error(req, EIO);
3278 async_req_done(req);
3281 state->buf = TALLOC_REALLOC_ARRAY(state, state->buf, uint8_t,
3282 current_size + more);
3283 if (async_req_nomem(state->buf, req)) {
3286 subreq = recvall_send(state, state->ev, state->fd,
3287 state->buf + current_size, more, 0);
3288 if (async_req_nomem(subreq, req)) {
3291 subreq->async.fn = read_pkt_done;
3292 subreq->async.priv = req;
3295 ssize_t read_pkt_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
3296 uint8_t **pbuf, int *perr)
3298 struct read_pkt_state *state = talloc_get_type_abort(
3299 req->private_data, struct read_pkt_state);
3301 if (async_req_is_errno(req, perr)) {
3304 *pbuf = talloc_move(mem_ctx, &state->buf);
3305 return talloc_get_size(*pbuf);