along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include "includes.h"
+#include "replace.h"
+#include <talloc.h>
#include "system/network.h"
#include "system/filesys.h"
#include "system/locale.h"
#include "system/shmem.h"
+#include "system/passwd.h"
+#include "system/time.h"
+#include "system/wait.h"
+#include "debug.h"
+#include "samba_util.h"
+#include "lib/util/select.h"
#undef malloc
#undef strcasecmp
#undef strncasecmp
#undef strdup
#undef realloc
-
-#if defined(UID_WRAPPER)
-#if !defined(UID_WRAPPER_REPLACE) && !defined(UID_WRAPPER_NOT_REPLACE)
-#define UID_WRAPPER_REPLACE
-#include "../uid_wrapper/uid_wrapper.h"
-#endif
-#else
-#define uwrap_enabled() 0
-#endif
+#undef calloc
/**
* @file
**/
int create_unlink_tmp(const char *dir)
{
- char *fname;
+ size_t len = strlen(dir ? dir : (dir = tmpdir()));
+ char fname[len+25];
int fd;
+ mode_t mask;
- if (!dir) {
- dir = tmpdir();
- }
-
- fname = talloc_asprintf(talloc_tos(), "%s/listenerlock_XXXXXX", dir);
- if (fname == NULL) {
+ len = snprintf(fname, sizeof(fname), "%s/listenerlock_XXXXXX", dir);
+ if (len >= sizeof(fname)) {
errno = ENOMEM;
return -1;
}
+ mask = umask(S_IRWXO | S_IRWXG);
fd = mkstemp(fname);
+ umask(mask);
if (fd == -1) {
- TALLOC_FREE(fname);
return -1;
}
if (unlink(fname) == -1) {
int sys_errno = errno;
close(fd);
- TALLOC_FREE(fname);
errno = sys_errno;
return -1;
}
- TALLOC_FREE(fname);
return fd;
}
return(st.st_mtime);
}
+/**
+ Check file permissions.
+**/
+
+_PUBLIC_ bool file_check_permissions(const char *fname,
+ uid_t uid,
+ mode_t file_perms,
+ struct stat *pst)
+{
+ int ret;
+ struct stat st;
+
+ if (pst == NULL) {
+ pst = &st;
+ }
+
+ ZERO_STRUCTP(pst);
+
+ ret = stat(fname, pst);
+ if (ret != 0) {
+ DEBUG(0, ("stat failed on file '%s': %s\n",
+ fname, strerror(errno)));
+ return false;
+ }
+
+ if (pst->st_uid != uid && !uid_wrapper_enabled()) {
+ DEBUG(0, ("invalid ownership of file '%s': "
+ "owned by uid %u, should be %u\n",
+ fname, (unsigned int)pst->st_uid,
+ (unsigned int)uid));
+ return false;
+ }
+
+ if ((pst->st_mode & 0777) != file_perms) {
+ DEBUG(0, ("invalid permissions on file "
+ "'%s': has 0%o should be 0%o\n", fname,
+ (unsigned int)(pst->st_mode & 0777),
+ (unsigned int)file_perms));
+ return false;
+ }
+
+ return true;
+}
+
/**
Check if a directory exists.
**/
/**
* Try to create the specified directory if it didn't exist.
*
- * @retval true if the directory already existed and has the right permissions
+ * @retval true if the directory already existed
* or was successfully created.
*/
-_PUBLIC_ bool directory_create_or_exist(const char *dname, uid_t uid,
- mode_t dir_perms)
+_PUBLIC_ bool directory_create_or_exist(const char *dname,
+ mode_t dir_perms)
{
+ int ret;
+ struct stat st;
mode_t old_umask;
- struct stat st;
-
+
+ ret = lstat(dname, &st);
+ if (ret == 0) {
+ return true;
+ }
+
+ if (errno != ENOENT) {
+ DBG_WARNING("lstat failed on directory %s: %s\n",
+ dname, strerror(errno));
+ return false;
+ }
+
+ /* Create directory */
old_umask = umask(0);
- if (lstat(dname, &st) == -1) {
- if (errno == ENOENT) {
- /* Create directory */
- if (mkdir(dname, dir_perms) == -1) {
- DEBUG(0, ("error creating directory "
- "%s: %s\n", dname,
- strerror(errno)));
- umask(old_umask);
- return false;
- }
- } else {
- DEBUG(0, ("lstat failed on directory %s: %s\n",
- dname, strerror(errno)));
- umask(old_umask);
- return false;
- }
- } else {
- /* Check ownership and permission on existing directory */
- if (!S_ISDIR(st.st_mode)) {
- DEBUG(0, ("directory %s isn't a directory\n",
- dname));
- umask(old_umask);
- return false;
- }
- if (st.st_uid != uid && !uwrap_enabled()) {
- DEBUG(0, ("invalid ownership on directory "
- "%s\n", dname));
- umask(old_umask);
- return false;
- }
- if ((st.st_mode & 0777) != dir_perms) {
- DEBUG(0, ("invalid permissions on directory "
- "'%s': has 0%o should be 0%o\n", dname,
- (st.st_mode & 0777), dir_perms));
- umask(old_umask);
- return false;
- }
+ ret = mkdir(dname, dir_perms);
+ if (ret == -1 && errno != EEXIST) {
+ DEBUG(0, ("mkdir failed on directory "
+ "%s: %s\n", dname,
+ strerror(errno)));
+ umask(old_umask);
+ return false;
}
- return true;
-}
+ umask(old_umask);
+ ret = lstat(dname, &st);
+ if (ret == -1) {
+ DEBUG(0, ("lstat failed on created directory %s: %s\n",
+ dname, strerror(errno)));
+ return false;
+ }
-/**
- Sleep for a specified number of milliseconds.
-**/
+ return true;
+}
-_PUBLIC_ void smb_msleep(unsigned int t)
+/**
+ * @brief Try to create a specified directory if it doesn't exist.
+ *
+ * The function creates a directory with the given uid and permissions if it
+ * doesn't exist. If it exists it makes sure the uid and permissions are
+ * correct and it will fail if they are different.
+ *
+ * @param[in] dname The directory to create.
+ *
+ * @param[in] uid The uid the directory needs to belong too.
+ *
+ * @param[in] dir_perms The expected permissions of the directory.
+ *
+ * @return True on success, false on error.
+ */
+_PUBLIC_ bool directory_create_or_exist_strict(const char *dname,
+ uid_t uid,
+ mode_t dir_perms)
{
-#if defined(HAVE_NANOSLEEP)
- struct timespec ts;
- int ret;
-
- ts.tv_sec = t/1000;
- ts.tv_nsec = 1000000*(t%1000);
+ struct stat st;
+ bool ok;
+ int rc;
- do {
- errno = 0;
- ret = nanosleep(&ts, &ts);
- } while (ret < 0 && errno == EINTR && (ts.tv_sec > 0 || ts.tv_nsec > 0));
-#else
- unsigned int tdiff=0;
- struct timeval tval,t1,t2;
- fd_set fds;
+ ok = directory_create_or_exist(dname, dir_perms);
+ if (!ok) {
+ return false;
+ }
- GetTimeOfDay(&t1);
- t2 = t1;
+ rc = lstat(dname, &st);
+ if (rc == -1) {
+ DEBUG(0, ("lstat failed on created directory %s: %s\n",
+ dname, strerror(errno)));
+ return false;
+ }
- while (tdiff < t) {
- tval.tv_sec = (t-tdiff)/1000;
- tval.tv_usec = 1000*((t-tdiff)%1000);
+ /* Check ownership and permission on existing directory */
+ if (!S_ISDIR(st.st_mode)) {
+ DEBUG(0, ("directory %s isn't a directory\n",
+ dname));
+ return false;
+ }
+ if (st.st_uid != uid && !uid_wrapper_enabled()) {
+ DBG_NOTICE("invalid ownership on directory "
+ "%s\n", dname);
+ return false;
+ }
+ if ((st.st_mode & 0777) != dir_perms) {
+ DEBUG(0, ("invalid permissions on directory "
+ "'%s': has 0%o should be 0%o\n", dname,
+ (unsigned int)(st.st_mode & 0777), (unsigned int)dir_perms));
+ return false;
+ }
- /* Never wait for more than 1 sec. */
- if (tval.tv_sec > 1) {
- tval.tv_sec = 1;
- tval.tv_usec = 0;
- }
+ return true;
+}
- FD_ZERO(&fds);
- errno = 0;
- select(0,&fds,NULL,NULL,&tval);
- GetTimeOfDay(&t2);
- if (t2.tv_sec < t1.tv_sec) {
- /* Someone adjusted time... */
- t1 = t2;
- }
+/**
+ Sleep for a specified number of milliseconds.
+**/
- tdiff = usec_time_diff(&t2,&t1)/1000;
- }
-#endif
+_PUBLIC_ void smb_msleep(unsigned int t)
+{
+ sys_poll_intr(NULL, 0, t);
}
/**
{
/* Doing kill with a non-positive pid causes messages to be
* sent to places we don't want. */
- SMB_ASSERT(pid > 0);
+ if (pid <= 0) {
+ return false;
+ }
return(kill(pid,0) == 0 || errno != ESRCH);
}
return true;
}
+struct debug_channel_level {
+ int channel;
+ int level;
+};
+
+static void debugadd_channel_cb(const char *buf, void *private_data)
+{
+ struct debug_channel_level *dcl =
+ (struct debug_channel_level *)private_data;
+
+ DEBUGADDC(dcl->channel, dcl->level,("%s", buf));
+}
+
static void debugadd_cb(const char *buf, void *private_data)
{
int *plevel = (int *)private_data;
if (i%16) {
int n;
n = 16 - (i%16);
- cb(" ", private_data);
+ cb(" ", private_data);
if (n>8) {
cb(" ", private_data);
}
dump_data_cb(buf, len, false, debugadd_cb, &level);
}
+/**
+ * Write dump of binary data to the log file.
+ *
+ * The data is only written if the log level is at least level for
+ * debug class dbgc_class.
+ */
+_PUBLIC_ void dump_data_dbgc(int dbgc_class, int level, const uint8_t *buf, int len)
+{
+ struct debug_channel_level dcl = { dbgc_class, level };
+
+ if (!DEBUGLVLC(dbgc_class, level)) {
+ return;
+ }
+ dump_data_cb(buf, len, false, debugadd_channel_cb, &dcl);
+}
+
/**
* Write dump of binary data to the log file.
*
dump_data_cb(buf, len, true, debugadd_cb, &level);
}
+static void fprintf_cb(const char *buf, void *private_data)
+{
+ FILE *f = (FILE *)private_data;
+ fprintf(f, "%s", buf);
+}
+
+void dump_data_file(const uint8_t *buf, int len, bool omit_zero_bytes,
+ FILE *f)
+{
+ dump_data_cb(buf, len, omit_zero_bytes, fprintf_cb, f);
+}
/**
malloc that aborts with smb_panic on fail or zero size.
Like strdup but for memory.
**/
-_PUBLIC_ void *memdup(const void *p, size_t size)
+_PUBLIC_ void *smb_memdup(const void *p, size_t size)
{
void *p2;
if (size == 0)
*/
_PUBLIC_ bool all_zero(const uint8_t *ptr, size_t size)
{
- int i;
+ size_t i;
if (!ptr) return true;
for (i=0;i<size;i++) {
if (ptr[i]) return false;
return realloc_array(NULL, el_size, count, false);
}
+/****************************************************************************
+ Type-safe memalign
+****************************************************************************/
+
+void *memalign_array(size_t el_size, size_t align, unsigned int count)
+{
+ if (el_size == 0 || count >= MAX_MALLOC_SIZE/el_size) {
+ return NULL;
+ }
+
+ return memalign(align, el_size*count);
+}
+
+/****************************************************************************
+ Type-safe calloc.
+****************************************************************************/
+
+void *calloc_array(size_t size, size_t nmemb)
+{
+ if (nmemb >= MAX_MALLOC_SIZE/size) {
+ return NULL;
+ }
+ if (size == 0 || nmemb == 0) {
+ return NULL;
+ }
+ return calloc(nmemb, size);
+}
+
/**
Trim the specified elements off the front and back of a string.
**/
size_t len;
/* Ignore null or empty strings. */
- if (!s || (s[0] == '\0'))
+ if (!s || (s[0] == '\0')) {
return false;
+ }
+ len = strlen(s);
front_len = front? strlen(front) : 0;
back_len = back? strlen(back) : 0;
- len = strlen(s);
-
if (front_len) {
- while (len && strncmp(s, front, front_len)==0) {
+ size_t front_trim = 0;
+
+ while (strncmp(s+front_trim, front, front_len)==0) {
+ front_trim += front_len;
+ }
+ if (front_trim > 0) {
/* Must use memmove here as src & dest can
* easily overlap. Found by valgrind. JRA. */
- memmove(s, s+front_len, (len-front_len)+1);
- len -= front_len;
+ memmove(s, s+front_trim, (len-front_trim)+1);
+ len -= front_trim;
ret=true;
}
}
-
+
if (back_len) {
while ((len >= back_len) && strncmp(s+len-back_len,back,back_len)==0) {
s[len-back_len]='\0';
}
/**
- Routine to get hex characters and turn them into a 16 byte array.
- the array can be variable length, and any non-hex-numeric
- characters are skipped. "0xnn" or "0Xnn" is specially catered
- for.
-
- valid examples: "0A5D15"; "0x15, 0x49, 0xa2"; "59\ta9\te3\n"
-
-
-**/
+ * Routine to get hex characters and turn them into a byte array.
+ * the array can be variable length.
+ * - "0xnn" or "0Xnn" is specially catered for.
+ * - The first non-hex-digit character (apart from possibly leading "0x"
+ * finishes the conversion and skips the rest of the input.
+ * - A single hex-digit character at the end of the string is skipped.
+ *
+ * valid examples: "0A5D15"; "0x123456"
+ */
_PUBLIC_ size_t strhex_to_str(char *p, size_t p_len, const char *strhex, size_t strhex_len)
{
size_t i = 0;
i += 2; /* skip two chars */
}
- for (; i < strhex_len && strhex[i] != 0; i++) {
- if (!(p1 = strchr(hexchars, toupper((unsigned char)strhex[i]))))
+ for (; i+1 < strhex_len && strhex[i] != 0 && strhex[i+1] != 0; i++) {
+ p1 = strchr(hexchars, toupper((unsigned char)strhex[i]));
+ if (p1 == NULL) {
break;
+ }
i++; /* next hex digit */
- if (!(p2 = strchr(hexchars, toupper((unsigned char)strhex[i]))))
+ p2 = strchr(hexchars, toupper((unsigned char)strhex[i]));
+ if (p2 == NULL) {
break;
+ }
/* get the two nybbles */
hinybble = PTR_DIFF(p1, hexchars);
return num_chars;
}
-/**
- * Parse a hex string and return a data blob.
+/**
+ * Parse a hex string and return a data blob.
*/
_PUBLIC_ _PURE_ DATA_BLOB strhex_to_data_blob(TALLOC_CTX *mem_ctx, const char *strhex)
{
return ret_blob;
}
-
/**
- * Routine to print a buffer as HEX digits, into an allocated string.
+ * Parse a hex dump and return a data blob. Hex dump is structured as
+ * is generated from dump_data_cb() elsewhere in this file
+ *
*/
-_PUBLIC_ void hex_encode(const unsigned char *buff_in, size_t len, char **out_hex_buffer)
+_PUBLIC_ _PURE_ DATA_BLOB hexdump_to_data_blob(TALLOC_CTX *mem_ctx, const char *hexdump, size_t hexdump_len)
{
- int i;
- char *hex_buffer;
-
- *out_hex_buffer = malloc_array_p(char, (len*2)+1);
- hex_buffer = *out_hex_buffer;
+ DATA_BLOB ret_blob = { 0 };
+ size_t i = 0;
+ size_t char_count = 0;
+ /* hexdump line length is 77 chars long. We then use the ASCII representation of the bytes
+ * at the end of the final line to calculate how many are in that line, minus the extra space
+ * and newline. */
+ size_t hexdump_byte_count = (16 * (hexdump_len / 77));
+ if (hexdump_len % 77) {
+ hexdump_byte_count += ((hexdump_len % 77) - 59 - 2);
+ }
+
+ ret_blob = data_blob_talloc(mem_ctx, NULL, hexdump_byte_count+1);
+ for (; i+1 < hexdump_len && hexdump[i] != 0 && hexdump[i+1] != 0; i++) {
+ if ((i%77) == 0)
+ i += 7; /* Skip the offset at the start of the line */
+ if ((i%77) < 56) { /* position 56 is after both hex chunks */
+ if (hexdump[i] != ' ') {
+ char_count += strhex_to_str((char *)&ret_blob.data[char_count],
+ hexdump_byte_count - char_count,
+ &hexdump[i], 2);
+ i += 2;
+ } else {
+ i++;
+ }
+ } else {
+ i++;
+ }
+ }
+ ret_blob.length = char_count;
+
+ return ret_blob;
+}
- for (i = 0; i < len; i++)
- slprintf(&hex_buffer[i*2], 3, "%02X", buff_in[i]);
+/**
+ * Print a buf in hex. Assumes dst is at least (srclen*2)+1 large.
+ */
+_PUBLIC_ void hex_encode_buf(char *dst, const uint8_t *src, size_t srclen)
+{
+ size_t i;
+ for (i=0; i<srclen; i++) {
+ snprintf(dst + i*2, 3, "%02X", src[i]);
+ }
+ /*
+ * Ensure 0-termination for 0-length buffers
+ */
+ dst[srclen*2] = '\0';
}
/**
- * talloc version of hex_encode()
+ * talloc version of hex_encode_buf()
*/
_PUBLIC_ char *hex_encode_talloc(TALLOC_CTX *mem_ctx, const unsigned char *buff_in, size_t len)
{
- int i;
char *hex_buffer;
hex_buffer = talloc_array(mem_ctx, char, (len*2)+1);
if (!hex_buffer) {
return NULL;
}
-
- for (i = 0; i < len; i++)
- slprintf(&hex_buffer[i*2], 3, "%02X", buff_in[i]);
-
+ hex_encode_buf(hex_buffer, buff_in, len);
talloc_set_name_const(hex_buffer, hex_buffer);
return hex_buffer;
}
return len;
}
-/**
- Set a boolean variable from the text value stored in the passed string.
- Returns true in success, false if the passed string does not correctly
- represent a boolean.
-**/
-
-_PUBLIC_ bool set_boolean(const char *boolean_string, bool *boolean)
-{
- if (strwicmp(boolean_string, "yes") == 0 ||
- strwicmp(boolean_string, "true") == 0 ||
- strwicmp(boolean_string, "on") == 0 ||
- strwicmp(boolean_string, "1") == 0) {
- *boolean = true;
- return true;
- } else if (strwicmp(boolean_string, "no") == 0 ||
- strwicmp(boolean_string, "false") == 0 ||
- strwicmp(boolean_string, "off") == 0 ||
- strwicmp(boolean_string, "0") == 0) {
- *boolean = false;
- return true;
- }
- return false;
-}
-
-/**
-return the number of bytes occupied by a buffer in CH_UTF16 format
-the result includes the null termination
-**/
-_PUBLIC_ size_t utf16_len(const void *buf)
-{
- size_t len;
-
- for (len = 0; SVAL(buf,len); len += 2) ;
-
- return len + 2;
-}
-
-/**
-return the number of bytes occupied by a buffer in CH_UTF16 format
-the result includes the null termination
-limited by 'n' bytes
-**/
-_PUBLIC_ size_t utf16_len_n(const void *src, size_t n)
-{
- size_t len;
-
- for (len = 0; (len+2 < n) && SVAL(src, len); len += 2) ;
-
- if (len+2 <= n) {
- len += 2;
- }
-
- return len;
-}
-
-/**
- * @file
- * @brief String utilities.
- **/
-
-static bool next_token_internal_talloc(TALLOC_CTX *ctx,
- const char **ptr,
- char **pp_buff,
- const char *sep,
- bool ltrim)
-{
- const char *s;
- const char *saved_s;
- char *pbuf;
- bool quoted;
- size_t len=1;
-
- *pp_buff = NULL;
- if (!ptr) {
- return(false);
- }
-
- s = *ptr;
-
- /* default to simple separators */
- if (!sep) {
- sep = " \t\n\r";
- }
-
- /* find the first non sep char, if left-trimming is requested */
- if (ltrim) {
- while (*s && strchr_m(sep,*s)) {
- s++;
- }
- }
-
- /* nothing left? */
- if (!*s) {
- return false;
- }
-
- /* When restarting we need to go from here. */
- saved_s = s;
-
- /* Work out the length needed. */
- for (quoted = false; *s &&
- (quoted || !strchr_m(sep,*s)); s++) {
- if (*s == '\"') {
- quoted = !quoted;
- } else {
- len++;
- }
- }
-
- /* We started with len = 1 so we have space for the nul. */
- *pp_buff = talloc_array(ctx, char, len);
- if (!*pp_buff) {
- return false;
- }
-
- /* copy over the token */
- pbuf = *pp_buff;
- s = saved_s;
- for (quoted = false; *s &&
- (quoted || !strchr_m(sep,*s)); s++) {
- if ( *s == '\"' ) {
- quoted = !quoted;
- } else {
- *pbuf++ = *s;
- }
- }
-
- *ptr = (*s) ? s+1 : s;
- *pbuf = 0;
-
- return true;
-}
-
-bool next_token_talloc(TALLOC_CTX *ctx,
- const char **ptr,
- char **pp_buff,
- const char *sep)
-{
- return next_token_internal_talloc(ctx, ptr, pp_buff, sep, true);
-}
-
-/*
- * Get the next token from a string, return false if none found. Handles
- * double-quotes. This version does not trim leading separator characters
- * before looking for a token.
- */
-
-bool next_token_no_ltrim_talloc(TALLOC_CTX *ctx,
- const char **ptr,
- char **pp_buff,
- const char *sep)
-{
- return next_token_internal_talloc(ctx, ptr, pp_buff, sep, false);
-}
-
-/**
- * Get the next token from a string, return False if none found.
- * Handles double-quotes.
- *
- * Based on a routine by GJC@VILLAGE.COM.
- * Extensively modified by Andrew.Tridgell@anu.edu.au
- **/
-_PUBLIC_ bool next_token(const char **ptr,char *buff, const char *sep, size_t bufsize)
-{
- const char *s;
- bool quoted;
- size_t len=1;
-
- if (!ptr)
- return false;
-
- s = *ptr;
-
- /* default to simple separators */
- if (!sep)
- sep = " \t\n\r";
-
- /* find the first non sep char */
- while (*s && strchr_m(sep,*s))
- s++;
-
- /* nothing left? */
- if (!*s)
- return false;
-
- /* copy over the token */
- for (quoted = false; len < bufsize && *s && (quoted || !strchr_m(sep,*s)); s++) {
- if (*s == '\"') {
- quoted = !quoted;
- } else {
- len++;
- *buff++ = *s;
- }
- }
-
- *ptr = (*s) ? s+1 : s;
- *buff = 0;
-
- return true;
-}
-
struct anonymous_shared_header {
union {
size_t length;
buf = mmap(NULL, bufsz, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED,
-1 /* fd */, 0 /* offset */);
#else
+{
+ int saved_errno;
+ int fd;
+
+ fd = open("/dev/zero", O_RDWR);
+ if (fd == -1) {
+ return NULL;
+ }
+
buf = mmap(NULL, bufsz, PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED,
- open("/dev/zero", O_RDWR), 0 /* offset */);
+ fd, 0 /* offset */);
+ saved_errno = errno;
+ close(fd);
+ errno = saved_errno;
+}
#endif
if (buf == MAP_FAILED) {
return ptr;
}
+void *anonymous_shared_resize(void *ptr, size_t new_size, bool maymove)
+{
+#ifdef HAVE_MREMAP
+ void *buf;
+ size_t pagesz = getpagesize();
+ size_t pagecnt;
+ size_t bufsz;
+ struct anonymous_shared_header *hdr;
+ int flags = 0;
+
+ if (ptr == NULL) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ hdr = (struct anonymous_shared_header *)ptr;
+ hdr--;
+ if (hdr->u.length > (new_size + sizeof(*hdr))) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ bufsz = new_size + sizeof(*hdr);
+
+ /* round up to full pages */
+ pagecnt = bufsz / pagesz;
+ if (bufsz % pagesz) {
+ pagecnt += 1;
+ }
+ bufsz = pagesz * pagecnt;
+
+ if (new_size >= bufsz) {
+ /* integer wrap */
+ errno = ENOSPC;
+ return NULL;
+ }
+
+ if (bufsz <= hdr->u.length) {
+ return ptr;
+ }
+
+ if (maymove) {
+ flags = MREMAP_MAYMOVE;
+ }
+
+ buf = mremap(hdr, hdr->u.length, bufsz, flags);
+
+ if (buf == MAP_FAILED) {
+ errno = ENOSPC;
+ return NULL;
+ }
+
+ hdr = (struct anonymous_shared_header *)buf;
+ hdr->u.length = bufsz;
+
+ ptr = (void *)(&hdr[1]);
+
+ return ptr;
+#else
+ errno = ENOSPC;
+ return NULL;
+#endif
+}
+
void anonymous_shared_free(void *ptr)
{
struct anonymous_shared_header *hdr;
git.samba.org / kai / samba-autobuild / .git / blobdiff