2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 1998-2005
6 Copyright (C) Timur Bakeyev 2005
7 Copyright (C) Bjoern Jacke 2006-2007
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "system/syslog.h"
25 #include "system/capability.h"
26 #include "system/passwd.h"
27 #include "system/filesys.h"
29 #ifdef HAVE_SYS_SYSCTL_H
30 #include <sys/sysctl.h>
33 #ifdef HAVE_SYS_PRCTL_H
34 #include <sys/prctl.h>
38 The idea is that this file will eventually have wrappers around all
39 important system calls in samba. The aims are:
41 - to enable easier porting by putting OS dependent stuff in here
43 - to allow for hooks into other "pseudo-filesystems"
45 - to allow easier integration of things like the japanese extensions
47 - to support the philosophy of Samba to expose the features of
48 the OS within the SMB model. In general whatever file/printer/variable
49 expansions/etc make sense to the OS should be acceptable to Samba.
54 /*******************************************************************
55 A wrapper for usleep in case we don't have one.
56 ********************************************************************/
58 int sys_usleep(long usecs)
65 * We need this braindamage as the glibc usleep
66 * is not SPEC1170 complient... grumble... JRA.
69 if(usecs < 0 || usecs > 999999) {
77 #else /* HAVE_USLEEP */
79 * Fake it with select...
82 tval.tv_usec = usecs/1000;
83 select(0,NULL,NULL,NULL,&tval);
85 #endif /* HAVE_USLEEP */
88 /*******************************************************************
89 A read wrapper that will deal with EINTR.
90 ********************************************************************/
92 ssize_t sys_read(int fd, void *buf, size_t count)
97 ret = read(fd, buf, count);
98 #if defined(EWOULDBLOCK)
99 } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
101 } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
106 /*******************************************************************
107 A write wrapper that will deal with EINTR.
108 ********************************************************************/
110 ssize_t sys_write(int fd, const void *buf, size_t count)
115 ret = write(fd, buf, count);
116 #if defined(EWOULDBLOCK)
117 } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
119 } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
124 /*******************************************************************
125 A writev wrapper that will deal with EINTR.
126 ********************************************************************/
128 ssize_t sys_writev(int fd, const struct iovec *iov, int iovcnt)
133 /* Try to confuse write_data_iov a bit */
134 if ((random() % 5) == 0) {
135 return sys_write(fd, iov[0].iov_base, iov[0].iov_len);
137 if (iov[0].iov_len > 1) {
138 return sys_write(fd, iov[0].iov_base,
139 (random() % (iov[0].iov_len-1)) + 1);
144 ret = writev(fd, iov, iovcnt);
145 #if defined(EWOULDBLOCK)
146 } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
148 } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
153 /*******************************************************************
154 A pread wrapper that will deal with EINTR and 64-bit file offsets.
155 ********************************************************************/
157 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
158 ssize_t sys_pread(int fd, void *buf, size_t count, SMB_OFF_T off)
163 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_PREAD64)
164 ret = pread64(fd, buf, count, off);
166 ret = pread(fd, buf, count, off);
168 } while (ret == -1 && errno == EINTR);
173 /*******************************************************************
174 A write wrapper that will deal with EINTR and 64-bit file offsets.
175 ********************************************************************/
177 #if defined(HAVE_PWRITE) || defined(HAVE_PWRITE64)
178 ssize_t sys_pwrite(int fd, const void *buf, size_t count, SMB_OFF_T off)
183 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_PWRITE64)
184 ret = pwrite64(fd, buf, count, off);
186 ret = pwrite(fd, buf, count, off);
188 } while (ret == -1 && errno == EINTR);
193 /*******************************************************************
194 A send wrapper that will deal with EINTR or EAGAIN or EWOULDBLOCK.
195 ********************************************************************/
197 ssize_t sys_send(int s, const void *msg, size_t len, int flags)
202 ret = send(s, msg, len, flags);
203 #if defined(EWOULDBLOCK)
204 } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
206 } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
211 /*******************************************************************
212 A recvfrom wrapper that will deal with EINTR.
213 ********************************************************************/
215 ssize_t sys_recvfrom(int s, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen)
220 ret = recvfrom(s, buf, len, flags, from, fromlen);
221 #if defined(EWOULDBLOCK)
222 } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
224 } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
229 /*******************************************************************
230 A fcntl wrapper that will deal with EINTR.
231 ********************************************************************/
233 int sys_fcntl_ptr(int fd, int cmd, void *arg)
238 ret = fcntl(fd, cmd, arg);
239 } while (ret == -1 && errno == EINTR);
243 /****************************************************************************
244 Get/Set all the possible time fields from a stat struct as a timespec.
245 ****************************************************************************/
247 static struct timespec get_atimespec(const struct stat *pst)
249 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
252 /* Old system - no ns timestamp. */
253 ret.tv_sec = pst->st_atime;
257 #if defined(HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC)
259 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
261 ret.tv_sec = pst->st_atime;
262 ret.tv_nsec = pst->st_atimensec;
264 #elif defined(HAVE_STRUCT_STAT_ST_MTIME_N)
266 ret.tv_sec = pst->st_atime;
267 ret.tv_nsec = pst->st_atime_n;
269 #elif defined(HAVE_STRUCT_STAT_ST_UMTIME)
271 ret.tv_sec = pst->st_atime;
272 ret.tv_nsec = pst->st_uatime * 1000;
274 #elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
275 return pst->st_atimespec;
277 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
282 static struct timespec get_mtimespec(const struct stat *pst)
284 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
287 /* Old system - no ns timestamp. */
288 ret.tv_sec = pst->st_mtime;
292 #if defined(HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC)
294 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
296 ret.tv_sec = pst->st_mtime;
297 ret.tv_nsec = pst->st_mtimensec;
299 #elif defined(HAVE_STRUCT_STAT_ST_MTIME_N)
301 ret.tv_sec = pst->st_mtime;
302 ret.tv_nsec = pst->st_mtime_n;
304 #elif defined(HAVE_STRUCT_STAT_ST_UMTIME)
306 ret.tv_sec = pst->st_mtime;
307 ret.tv_nsec = pst->st_umtime * 1000;
309 #elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
310 return pst->st_mtimespec;
312 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
317 static struct timespec get_ctimespec(const struct stat *pst)
319 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
322 /* Old system - no ns timestamp. */
323 ret.tv_sec = pst->st_ctime;
327 #if defined(HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC)
329 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
331 ret.tv_sec = pst->st_ctime;
332 ret.tv_nsec = pst->st_ctimensec;
334 #elif defined(HAVE_STRUCT_STAT_ST_MTIME_N)
336 ret.tv_sec = pst->st_ctime;
337 ret.tv_nsec = pst->st_ctime_n;
339 #elif defined(HAVE_STRUCT_STAT_ST_UMTIME)
341 ret.tv_sec = pst->st_ctime;
342 ret.tv_nsec = pst->st_uctime * 1000;
344 #elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
345 return pst->st_ctimespec;
347 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
352 /****************************************************************************
353 Return the best approximation to a 'create time' under UNIX from a stat
355 ****************************************************************************/
357 static struct timespec calc_create_time_stat(const struct stat *st)
359 struct timespec ret, ret1;
360 struct timespec c_time = get_ctimespec(st);
361 struct timespec m_time = get_mtimespec(st);
362 struct timespec a_time = get_atimespec(st);
364 ret = timespec_compare(&c_time, &m_time) < 0 ? c_time : m_time;
365 ret1 = timespec_compare(&ret, &a_time) < 0 ? ret : a_time;
367 if(!null_timespec(ret1)) {
372 * One of ctime, mtime or atime was zero (probably atime).
373 * Just return MIN(ctime, mtime).
378 /****************************************************************************
379 Return the best approximation to a 'create time' under UNIX from a stat_ex
381 ****************************************************************************/
383 static struct timespec calc_create_time_stat_ex(const struct stat_ex *st)
385 struct timespec ret, ret1;
386 struct timespec c_time = st->st_ex_ctime;
387 struct timespec m_time = st->st_ex_mtime;
388 struct timespec a_time = st->st_ex_atime;
390 ret = timespec_compare(&c_time, &m_time) < 0 ? c_time : m_time;
391 ret1 = timespec_compare(&ret, &a_time) < 0 ? ret : a_time;
393 if(!null_timespec(ret1)) {
398 * One of ctime, mtime or atime was zero (probably atime).
399 * Just return MIN(ctime, mtime).
404 /****************************************************************************
405 Return the 'create time' from a stat struct if it exists (birthtime) or else
406 use the best approximation.
407 ****************************************************************************/
409 static void make_create_timespec(const struct stat *pst, struct stat_ex *dst,
410 bool fake_dir_create_times)
412 if (S_ISDIR(pst->st_mode) && fake_dir_create_times) {
413 dst->st_ex_btime.tv_sec = 315493200L; /* 1/1/1980 */
414 dst->st_ex_btime.tv_nsec = 0;
417 dst->st_ex_calculated_birthtime = false;
419 #if defined(HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC)
420 dst->st_ex_btime = pst->st_birthtimespec;
421 #elif defined(HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)
422 dst->st_ex_btime.tv_sec = pst->st_birthtime;
423 dst->st_ex_btime.tv_nsec = pst->st_birthtimenspec;
424 #elif defined(HAVE_STRUCT_STAT_ST_BIRTHTIME)
425 dst->st_ex_btime.tv_sec = pst->st_birthtime;
426 dst->st_ex_btime.tv_nsec = 0;
428 dst->st_ex_btime = calc_create_time_stat(pst);
429 dst->st_ex_calculated_birthtime = true;
432 /* Deal with systems that don't initialize birthtime correctly.
433 * Pointed out by SATOH Fumiyasu <fumiyas@osstech.jp>.
435 if (null_timespec(dst->st_ex_btime)) {
436 dst->st_ex_btime = calc_create_time_stat(pst);
437 dst->st_ex_calculated_birthtime = true;
441 /****************************************************************************
442 If we update a timestamp in a stat_ex struct we may have to recalculate
443 the birthtime. For now only implement this for write time, but we may
444 also need to do it for atime and ctime. JRA.
445 ****************************************************************************/
447 void update_stat_ex_mtime(struct stat_ex *dst,
448 struct timespec write_ts)
450 dst->st_ex_mtime = write_ts;
452 /* We may have to recalculate btime. */
453 if (dst->st_ex_calculated_birthtime) {
454 dst->st_ex_btime = calc_create_time_stat_ex(dst);
458 void update_stat_ex_create_time(struct stat_ex *dst,
459 struct timespec create_time)
461 dst->st_ex_btime = create_time;
462 dst->st_ex_calculated_birthtime = false;
465 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_STAT64)
466 void init_stat_ex_from_stat (struct stat_ex *dst,
467 const struct stat64 *src,
468 bool fake_dir_create_times)
470 void init_stat_ex_from_stat (struct stat_ex *dst,
471 const struct stat *src,
472 bool fake_dir_create_times)
475 dst->st_ex_dev = src->st_dev;
476 dst->st_ex_ino = src->st_ino;
477 dst->st_ex_mode = src->st_mode;
478 dst->st_ex_nlink = src->st_nlink;
479 dst->st_ex_uid = src->st_uid;
480 dst->st_ex_gid = src->st_gid;
481 dst->st_ex_rdev = src->st_rdev;
482 dst->st_ex_size = src->st_size;
483 dst->st_ex_atime = get_atimespec(src);
484 dst->st_ex_mtime = get_mtimespec(src);
485 dst->st_ex_ctime = get_ctimespec(src);
486 make_create_timespec(src, dst, fake_dir_create_times);
487 #ifdef HAVE_STAT_ST_BLKSIZE
488 dst->st_ex_blksize = src->st_blksize;
490 dst->st_ex_blksize = STAT_ST_BLOCKSIZE;
493 #ifdef HAVE_STAT_ST_BLOCKS
494 dst->st_ex_blocks = src->st_blocks;
496 dst->st_ex_blocks = src->st_size / dst->st_ex_blksize + 1;
499 #ifdef HAVE_STAT_ST_FLAGS
500 dst->st_ex_flags = src->st_flags;
502 dst->st_ex_flags = 0;
506 /*******************************************************************
507 A stat() wrapper that will deal with 64 bit filesizes.
508 ********************************************************************/
510 int sys_stat(const char *fname, SMB_STRUCT_STAT *sbuf,
511 bool fake_dir_create_times)
514 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_STAT64)
515 struct stat64 statbuf;
516 ret = stat64(fname, &statbuf);
519 ret = stat(fname, &statbuf);
522 /* we always want directories to appear zero size */
523 if (S_ISDIR(statbuf.st_mode)) {
526 init_stat_ex_from_stat(sbuf, &statbuf, fake_dir_create_times);
531 /*******************************************************************
532 An fstat() wrapper that will deal with 64 bit filesizes.
533 ********************************************************************/
535 int sys_fstat(int fd, SMB_STRUCT_STAT *sbuf, bool fake_dir_create_times)
538 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_FSTAT64)
539 struct stat64 statbuf;
540 ret = fstat64(fd, &statbuf);
543 ret = fstat(fd, &statbuf);
546 /* we always want directories to appear zero size */
547 if (S_ISDIR(statbuf.st_mode)) {
550 init_stat_ex_from_stat(sbuf, &statbuf, fake_dir_create_times);
555 /*******************************************************************
556 An lstat() wrapper that will deal with 64 bit filesizes.
557 ********************************************************************/
559 int sys_lstat(const char *fname,SMB_STRUCT_STAT *sbuf,
560 bool fake_dir_create_times)
563 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_LSTAT64)
564 struct stat64 statbuf;
565 ret = lstat64(fname, &statbuf);
568 ret = lstat(fname, &statbuf);
571 /* we always want directories to appear zero size */
572 if (S_ISDIR(statbuf.st_mode)) {
575 init_stat_ex_from_stat(sbuf, &statbuf, fake_dir_create_times);
580 /*******************************************************************
581 An posix_fallocate() wrapper that will deal with 64 bit filesizes.
582 ********************************************************************/
583 int sys_posix_fallocate(int fd, SMB_OFF_T offset, SMB_OFF_T len)
585 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_POSIX_FALLOCATE64) && !defined(HAVE_BROKEN_POSIX_FALLOCATE)
586 return posix_fallocate64(fd, offset, len);
587 #elif defined(HAVE_POSIX_FALLOCATE) && !defined(HAVE_BROKEN_POSIX_FALLOCATE)
588 return posix_fallocate(fd, offset, len);
589 #elif defined(F_RESVSP64)
590 /* this handles XFS on IRIX */
592 SMB_OFF_T new_len = offset + len;
596 /* unlikely to get a too large file on a 64bit system but ... */
600 fl.l_whence = SEEK_SET;
604 ret=fcntl(fd, F_RESVSP64, &fl);
609 /* Make sure the file gets enlarged after we allocated space: */
611 if (new_len > sbuf.st_size)
612 ftruncate64(fd, new_len);
619 /*******************************************************************
620 An fallocate() function that matches the semantics of the Linux one.
621 ********************************************************************/
623 #ifdef HAVE_LINUX_FALLOC_H
624 #include <linux/falloc.h>
627 int sys_fallocate(int fd, enum vfs_fallocate_mode mode, SMB_OFF_T offset, SMB_OFF_T len)
629 #if defined(HAVE_LINUX_FALLOCATE64) || defined(HAVE_LINUX_FALLOCATE)
632 case VFS_FALLOCATE_EXTEND_SIZE:
635 case VFS_FALLOCATE_KEEP_SIZE:
636 lmode = FALLOC_FL_KEEP_SIZE;
642 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_LINUX_FALLOCATE64)
643 return fallocate64(fd, lmode, offset, len);
644 #elif defined(HAVE_LINUX_FALLOCATE)
645 return fallocate(fd, lmode, offset, len);
648 /* TODO - plumb in fallocate from other filesysetms like VXFS etc. JRA. */
654 /*******************************************************************
655 An ftruncate() wrapper that will deal with 64 bit filesizes.
656 ********************************************************************/
658 int sys_ftruncate(int fd, SMB_OFF_T offset)
660 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_FTRUNCATE64)
661 return ftruncate64(fd, offset);
663 return ftruncate(fd, offset);
667 /*******************************************************************
668 An lseek() wrapper that will deal with 64 bit filesizes.
669 ********************************************************************/
671 SMB_OFF_T sys_lseek(int fd, SMB_OFF_T offset, int whence)
673 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_LSEEK64)
674 return lseek64(fd, offset, whence);
676 return lseek(fd, offset, whence);
680 /*******************************************************************
681 An ftell() wrapper that will deal with 64 bit filesizes.
682 ********************************************************************/
684 SMB_OFF_T sys_ftell(FILE *fp)
686 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(LARGE_SMB_OFF_T) && defined(HAVE_FTELL64)
687 return (SMB_OFF_T)ftell64(fp);
688 #elif defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(LARGE_SMB_OFF_T) && defined(HAVE_FTELLO64)
689 return (SMB_OFF_T)ftello64(fp);
691 return (SMB_OFF_T)ftell(fp);
695 /*******************************************************************
696 A creat() wrapper that will deal with 64 bit filesizes.
697 ********************************************************************/
699 int sys_creat(const char *path, mode_t mode)
701 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_CREAT64)
702 return creat64(path, mode);
705 * If creat64 isn't defined then ensure we call a potential open64.
708 return sys_open(path, O_WRONLY | O_CREAT | O_TRUNC, mode);
712 /*******************************************************************
713 An open() wrapper that will deal with 64 bit filesizes.
714 ********************************************************************/
716 int sys_open(const char *path, int oflag, mode_t mode)
718 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OPEN64)
719 return open64(path, oflag, mode);
721 return open(path, oflag, mode);
725 /*******************************************************************
726 An fopen() wrapper that will deal with 64 bit filesizes.
727 ********************************************************************/
729 FILE *sys_fopen(const char *path, const char *type)
731 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_FOPEN64)
732 return fopen64(path, type);
734 return fopen(path, type);
739 #if HAVE_KERNEL_SHARE_MODES
741 #define LOCK_MAND 32 /* This is a mandatory flock */
742 #define LOCK_READ 64 /* ... Which allows concurrent read operations */
743 #define LOCK_WRITE 128 /* ... Which allows concurrent write operations */
744 #define LOCK_RW 192 /* ... Which allows concurrent read & write ops */
748 /*******************************************************************
749 A flock() wrapper that will perform the kernel flock.
750 ********************************************************************/
752 void kernel_flock(int fd, uint32 share_mode, uint32 access_mask)
754 #if HAVE_KERNEL_SHARE_MODES
756 if (share_mode == FILE_SHARE_WRITE) {
757 kernel_mode = LOCK_MAND|LOCK_WRITE;
758 } else if (share_mode == FILE_SHARE_READ) {
759 kernel_mode = LOCK_MAND|LOCK_READ;
760 } else if (share_mode == FILE_SHARE_NONE) {
761 kernel_mode = LOCK_MAND;
764 flock(fd, kernel_mode);
772 /*******************************************************************
773 An opendir wrapper that will deal with 64 bit filesizes.
774 ********************************************************************/
776 SMB_STRUCT_DIR *sys_opendir(const char *name)
778 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OPENDIR64)
779 return opendir64(name);
781 return opendir(name);
785 /*******************************************************************
786 An fdopendir wrapper that will deal with 64 bit filesizes.
787 Ugly hack - we need dirfd for this to work correctly in the
789 ********************************************************************/
791 SMB_STRUCT_DIR *sys_fdopendir(int fd)
793 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_FDOPENDIR64) && defined(HAVE_DIRFD)
794 return fdopendir64(fd);
795 #elif defined(HAVE_FDOPENDIR) && defined(HAVE_DIRFD)
796 return fdopendir(fd);
803 /*******************************************************************
804 A readdir wrapper that will deal with 64 bit filesizes.
805 ********************************************************************/
807 SMB_STRUCT_DIRENT *sys_readdir(SMB_STRUCT_DIR *dirp)
809 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_READDIR64)
810 return readdir64(dirp);
812 return readdir(dirp);
816 /*******************************************************************
817 A seekdir wrapper that will deal with 64 bit filesizes.
818 ********************************************************************/
820 void sys_seekdir(SMB_STRUCT_DIR *dirp, long offset)
822 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_SEEKDIR64)
823 seekdir64(dirp, offset);
825 seekdir(dirp, offset);
829 /*******************************************************************
830 A telldir wrapper that will deal with 64 bit filesizes.
831 ********************************************************************/
833 long sys_telldir(SMB_STRUCT_DIR *dirp)
835 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_TELLDIR64)
836 return (long)telldir64(dirp);
838 return (long)telldir(dirp);
842 /*******************************************************************
843 A rewinddir wrapper that will deal with 64 bit filesizes.
844 ********************************************************************/
846 void sys_rewinddir(SMB_STRUCT_DIR *dirp)
848 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_REWINDDIR64)
855 /*******************************************************************
856 A close wrapper that will deal with 64 bit filesizes.
857 ********************************************************************/
859 int sys_closedir(SMB_STRUCT_DIR *dirp)
861 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_CLOSEDIR64)
862 return closedir64(dirp);
864 return closedir(dirp);
868 /*******************************************************************
869 An mknod() wrapper that will deal with 64 bit filesizes.
870 ********************************************************************/
872 int sys_mknod(const char *path, mode_t mode, SMB_DEV_T dev)
874 #if defined(HAVE_MKNOD) || defined(HAVE_MKNOD64)
875 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_MKNOD64) && defined(HAVE_DEV64_T)
876 return mknod64(path, mode, dev);
878 return mknod(path, mode, dev);
881 /* No mknod system call. */
887 /*******************************************************************
888 The wait() calls vary between systems
889 ********************************************************************/
891 int sys_waitpid(pid_t pid,int *status,int options)
894 return waitpid(pid,status,options);
895 #else /* HAVE_WAITPID */
896 return wait4(pid, status, options, NULL);
897 #endif /* HAVE_WAITPID */
900 /*******************************************************************
901 System wrapper for getwd. Always returns MALLOC'ed memory, or NULL
902 on error (malloc fail usually).
903 ********************************************************************/
905 char *sys_getwd(void)
907 #ifdef GETCWD_TAKES_NULL
908 return getcwd(NULL, 0);
910 char *wd = NULL, *s = NULL;
911 size_t allocated = PATH_MAX;
914 s = SMB_REALLOC_ARRAY(s, char, allocated);
918 wd = getcwd(s, allocated);
922 if (errno != ERANGE) {
927 if (allocated < PATH_MAX) {
934 char *s = SMB_MALLOC_ARRAY(char, PATH_MAX);
942 #if defined(HAVE_POSIX_CAPABILITIES)
944 /**************************************************************************
945 Try and abstract process capabilities (for systems that have them).
946 ****************************************************************************/
948 /* Set the POSIX capabilities needed for the given purpose into the effective
949 * capability set of the current process. Make sure they are always removed
950 * from the inheritable set, because there is no circumstance in which our
951 * children should inherit our elevated privileges.
953 static bool set_process_capability(enum smbd_capability capability,
956 cap_value_t cap_vals[2] = {0};
957 int num_cap_vals = 0;
961 #if defined(HAVE_PRCTL) && defined(PR_GET_KEEPCAPS) && defined(PR_SET_KEEPCAPS)
962 /* On Linux, make sure that any capabilities we grab are sticky
963 * across UID changes. We expect that this would allow us to keep both
964 * the effective and permitted capability sets, but as of circa 2.6.16,
965 * only the permitted set is kept. It is a bug (which we work around)
966 * that the effective set is lost, but we still require the effective
969 if (!prctl(PR_GET_KEEPCAPS)) {
970 prctl(PR_SET_KEEPCAPS, 1);
974 cap = cap_get_proc();
976 DEBUG(0,("set_process_capability: cap_get_proc failed: %s\n",
981 switch (capability) {
982 case KERNEL_OPLOCK_CAPABILITY:
983 #ifdef CAP_NETWORK_MGT
984 /* IRIX has CAP_NETWORK_MGT for oplocks. */
985 cap_vals[num_cap_vals++] = CAP_NETWORK_MGT;
988 case DMAPI_ACCESS_CAPABILITY:
989 #ifdef CAP_DEVICE_MGT
990 /* IRIX has CAP_DEVICE_MGT for DMAPI access. */
991 cap_vals[num_cap_vals++] = CAP_DEVICE_MGT;
993 /* Linux has CAP_MKNOD for DMAPI access. */
994 cap_vals[num_cap_vals++] = CAP_MKNOD;
997 case LEASE_CAPABILITY:
999 cap_vals[num_cap_vals++] = CAP_LEASE;
1004 SMB_ASSERT(num_cap_vals <= ARRAY_SIZE(cap_vals));
1006 if (num_cap_vals == 0) {
1011 cap_set_flag(cap, CAP_EFFECTIVE, num_cap_vals, cap_vals,
1012 enable ? CAP_SET : CAP_CLEAR);
1014 /* We never want to pass capabilities down to our children, so make
1015 * sure they are not inherited.
1017 cap_set_flag(cap, CAP_INHERITABLE, num_cap_vals, cap_vals, CAP_CLEAR);
1019 if (cap_set_proc(cap) == -1) {
1020 DEBUG(0, ("set_process_capability: cap_set_proc failed: %s\n",
1030 #endif /* HAVE_POSIX_CAPABILITIES */
1032 /****************************************************************************
1033 Gain the oplock capability from the kernel if possible.
1034 ****************************************************************************/
1036 void set_effective_capability(enum smbd_capability capability)
1038 #if defined(HAVE_POSIX_CAPABILITIES)
1039 set_process_capability(capability, True);
1040 #endif /* HAVE_POSIX_CAPABILITIES */
1043 void drop_effective_capability(enum smbd_capability capability)
1045 #if defined(HAVE_POSIX_CAPABILITIES)
1046 set_process_capability(capability, False);
1047 #endif /* HAVE_POSIX_CAPABILITIES */
1050 /**************************************************************************
1051 Wrapper for random().
1052 ****************************************************************************/
1054 long sys_random(void)
1056 #if defined(HAVE_RANDOM)
1057 return (long)random();
1058 #elif defined(HAVE_RAND)
1059 return (long)rand();
1061 DEBUG(0,("Error - no random function available !\n"));
1066 /**************************************************************************
1067 Wrapper for srandom().
1068 ****************************************************************************/
1070 void sys_srandom(unsigned int seed)
1072 #if defined(HAVE_SRANDOM)
1074 #elif defined(HAVE_SRAND)
1077 DEBUG(0,("Error - no srandom function available !\n"));
1083 #define NGROUPS_MAX 32 /* Guess... */
1086 /**************************************************************************
1087 Returns equivalent to NGROUPS_MAX - using sysconf if needed.
1088 ****************************************************************************/
1090 int groups_max(void)
1092 #if defined(SYSCONF_SC_NGROUPS_MAX)
1093 int ret = sysconf(_SC_NGROUPS_MAX);
1094 return (ret == -1) ? NGROUPS_MAX : ret;
1100 /**************************************************************************
1101 Wrap setgroups and getgroups for systems that declare getgroups() as
1102 returning an array of gid_t, but actuall return an array of int.
1103 ****************************************************************************/
1105 #if defined(HAVE_BROKEN_GETGROUPS)
1107 #ifdef HAVE_BROKEN_GETGROUPS
1113 static int sys_broken_getgroups(int setlen, gid_t *gidset)
1120 return getgroups(setlen, &gid);
1124 * Broken case. We need to allocate a
1125 * GID_T array of size setlen.
1134 setlen = groups_max();
1136 if((group_list = SMB_MALLOC_ARRAY(GID_T, setlen)) == NULL) {
1137 DEBUG(0,("sys_getgroups: Malloc fail.\n"));
1141 if((ngroups = getgroups(setlen, group_list)) < 0) {
1142 int saved_errno = errno;
1143 SAFE_FREE(group_list);
1144 errno = saved_errno;
1148 for(i = 0; i < ngroups; i++)
1149 gidset[i] = (gid_t)group_list[i];
1151 SAFE_FREE(group_list);
1155 static int sys_broken_setgroups(int setlen, gid_t *gidset)
1163 if (setlen < 0 || setlen > groups_max()) {
1169 * Broken case. We need to allocate a
1170 * GID_T array of size setlen.
1173 if((group_list = SMB_MALLOC_ARRAY(GID_T, setlen)) == NULL) {
1174 DEBUG(0,("sys_setgroups: Malloc fail.\n"));
1178 for(i = 0; i < setlen; i++)
1179 group_list[i] = (GID_T) gidset[i];
1181 if(setgroups(setlen, group_list) != 0) {
1182 int saved_errno = errno;
1183 SAFE_FREE(group_list);
1184 errno = saved_errno;
1188 SAFE_FREE(group_list);
1192 #endif /* HAVE_BROKEN_GETGROUPS */
1194 /* This is a list of systems that require the first GID passed to setgroups(2)
1195 * to be the effective GID. If your system is one of these, add it here.
1197 #if defined (FREEBSD) || defined (DARWINOS)
1198 #define USE_BSD_SETGROUPS
1201 #if defined(USE_BSD_SETGROUPS)
1202 /* Depending on the particular BSD implementation, the first GID that is
1203 * passed to setgroups(2) will either be ignored or will set the credential's
1204 * effective GID. In either case, the right thing to do is to guarantee that
1205 * gidset[0] is the effective GID.
1207 static int sys_bsd_setgroups(gid_t primary_gid, int setlen, const gid_t *gidset)
1209 gid_t *new_gidset = NULL;
1213 /* setgroups(2) will fail with EINVAL if we pass too many groups. */
1216 /* No group list, just make sure we are setting the efective GID. */
1218 return setgroups(1, &primary_gid);
1221 /* If the primary gid is not the first array element, grow the array
1222 * and insert it at the front.
1224 if (gidset[0] != primary_gid) {
1225 new_gidset = SMB_MALLOC_ARRAY(gid_t, setlen + 1);
1226 if (new_gidset == NULL) {
1230 memcpy(new_gidset + 1, gidset, (setlen * sizeof(gid_t)));
1231 new_gidset[0] = primary_gid;
1236 DEBUG(3, ("forced to truncate group list from %d to %d\n",
1241 #if defined(HAVE_BROKEN_GETGROUPS)
1242 ret = sys_broken_setgroups(setlen, new_gidset ? new_gidset : gidset);
1244 ret = setgroups(setlen, new_gidset ? new_gidset : gidset);
1249 SAFE_FREE(new_gidset);
1256 #endif /* USE_BSD_SETGROUPS */
1258 /**************************************************************************
1259 Wrapper for getgroups. Deals with broken (int) case.
1260 ****************************************************************************/
1262 int sys_getgroups(int setlen, gid_t *gidset)
1264 #if defined(HAVE_BROKEN_GETGROUPS)
1265 return sys_broken_getgroups(setlen, gidset);
1267 return getgroups(setlen, gidset);
1271 /**************************************************************************
1272 Wrapper for setgroups. Deals with broken (int) case and BSD case.
1273 ****************************************************************************/
1275 int sys_setgroups(gid_t UNUSED(primary_gid), int setlen, gid_t *gidset)
1277 #if !defined(HAVE_SETGROUPS)
1280 #endif /* HAVE_SETGROUPS */
1282 #if defined(USE_BSD_SETGROUPS)
1283 return sys_bsd_setgroups(primary_gid, setlen, gidset);
1284 #elif defined(HAVE_BROKEN_GETGROUPS)
1285 return sys_broken_setgroups(setlen, gidset);
1287 return setgroups(setlen, gidset);
1291 /**************************************************************************
1292 Extract a command into an arg list.
1293 ****************************************************************************/
1295 static char **extract_args(TALLOC_CTX *mem_ctx, const char *command)
1304 if (!(trunc_cmd = talloc_strdup(mem_ctx, command))) {
1305 DEBUG(0, ("talloc failed\n"));
1309 if(!(ptr = strtok_r(trunc_cmd, " \t", &saveptr))) {
1310 TALLOC_FREE(trunc_cmd);
1319 for( argcl = 1; ptr; ptr = strtok_r(NULL, " \t", &saveptr))
1322 TALLOC_FREE(trunc_cmd);
1324 if (!(argl = talloc_array(mem_ctx, char *, argcl + 1))) {
1329 * Now do the extraction.
1332 if (!(trunc_cmd = talloc_strdup(mem_ctx, command))) {
1336 ptr = strtok_r(trunc_cmd, " \t", &saveptr);
1339 if (!(argl[i++] = talloc_strdup(argl, ptr))) {
1343 while((ptr = strtok_r(NULL, " \t", &saveptr)) != NULL) {
1345 if (!(argl[i++] = talloc_strdup(argl, ptr))) {
1351 TALLOC_FREE(trunc_cmd);
1355 DEBUG(0, ("talloc failed\n"));
1356 TALLOC_FREE(trunc_cmd);
1362 /**************************************************************************
1363 Wrapper for popen. Safer as it doesn't search a path.
1364 Modified from the glibc sources.
1365 modified by tridge to return a file descriptor. We must kick our FILE* habit
1366 ****************************************************************************/
1368 typedef struct _popen_list
1372 struct _popen_list *next;
1375 static popen_list *popen_chain;
1377 int sys_popen(const char *command)
1379 int parent_end, child_end;
1381 popen_list *entry = NULL;
1384 if (pipe(pipe_fds) < 0)
1387 parent_end = pipe_fds[0];
1388 child_end = pipe_fds[1];
1395 if((entry = SMB_MALLOC_P(popen_list)) == NULL)
1398 ZERO_STRUCTP(entry);
1401 * Extract the command and args into a NULL terminated array.
1404 if(!(argl = extract_args(NULL, command)))
1407 entry->child_pid = fork();
1409 if (entry->child_pid == -1) {
1413 if (entry->child_pid == 0) {
1419 int child_std_end = STDOUT_FILENO;
1423 if (child_end != child_std_end) {
1424 dup2 (child_end, child_std_end);
1429 * POSIX.2: "popen() shall ensure that any streams from previous
1430 * popen() calls that remain open in the parent process are closed
1431 * in the new child process."
1434 for (p = popen_chain; p; p = p->next)
1437 execv(argl[0], argl);
1448 /* Link into popen_chain. */
1449 entry->next = popen_chain;
1450 popen_chain = entry;
1451 entry->fd = parent_end;
1464 /**************************************************************************
1465 Wrapper for pclose. Modified from the glibc sources.
1466 ****************************************************************************/
1468 int sys_pclose(int fd)
1471 popen_list **ptr = &popen_chain;
1472 popen_list *entry = NULL;
1476 /* Unlink from popen_chain. */
1477 for ( ; *ptr != NULL; ptr = &(*ptr)->next) {
1478 if ((*ptr)->fd == fd) {
1480 *ptr = (*ptr)->next;
1486 if (status < 0 || close(entry->fd) < 0)
1490 * As Samba is catching and eating child process
1491 * exits we don't really care about the child exit
1492 * code, a -1 with errno = ECHILD will do fine for us.
1496 wait_pid = sys_waitpid (entry->child_pid, &wstatus, 0);
1497 } while (wait_pid == -1 && errno == EINTR);
1506 /**************************************************************************
1507 Wrapper for Admin Logs.
1508 ****************************************************************************/
1510 void sys_adminlog(int priority, const char *format_str, ...)
1514 char *msgbuf = NULL;
1516 va_start( ap, format_str );
1517 ret = vasprintf( &msgbuf, format_str, ap );
1523 #if defined(HAVE_SYSLOG)
1524 syslog( priority, "%s", msgbuf );
1526 DEBUG(0,("%s", msgbuf ));
1531 /******** Solaris EA helper function prototypes ********/
1532 #ifdef HAVE_ATTROPEN
1533 #define SOLARIS_ATTRMODE S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP
1534 static int solaris_write_xattr(int attrfd, const char *value, size_t size);
1535 static ssize_t solaris_read_xattr(int attrfd, void *value, size_t size);
1536 static ssize_t solaris_list_xattr(int attrdirfd, char *list, size_t size);
1537 static int solaris_unlinkat(int attrdirfd, const char *name);
1538 static int solaris_attropen(const char *path, const char *attrpath, int oflag, mode_t mode);
1539 static int solaris_openat(int fildes, const char *path, int oflag, mode_t mode);
1542 /**************************************************************************
1543 Wrappers for extented attribute calls. Based on the Linux package with
1544 support for IRIX and (Net|Free)BSD also. Expand as other systems have them.
1545 ****************************************************************************/
1547 ssize_t sys_getxattr (const char *path, const char *name, void *value, size_t size)
1549 #if defined(HAVE_GETXATTR)
1550 #ifndef XATTR_ADD_OPT
1551 return getxattr(path, name, value, size);
1554 return getxattr(path, name, value, size, 0, options);
1556 #elif defined(HAVE_GETEA)
1557 return getea(path, name, value, size);
1558 #elif defined(HAVE_EXTATTR_GET_FILE)
1561 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1562 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1563 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1565 * The BSD implementation has a nasty habit of silently truncating
1566 * the returned value to the size of the buffer, so we have to check
1567 * that the buffer is large enough to fit the returned value.
1569 if((retval=extattr_get_file(path, attrnamespace, attrname, NULL, 0)) >= 0) {
1574 if((retval=extattr_get_file(path, attrnamespace, attrname, value, size)) >= 0)
1578 DEBUG(10,("sys_getxattr: extattr_get_file() failed with: %s\n", strerror(errno)));
1580 #elif defined(HAVE_ATTR_GET)
1581 int retval, flags = 0;
1582 int valuelength = (int)size;
1583 char *attrname = strchr(name,'.') + 1;
1585 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1587 retval = attr_get(path, attrname, (char *)value, &valuelength, flags);
1589 return retval ? retval : valuelength;
1590 #elif defined(HAVE_ATTROPEN)
1592 int attrfd = solaris_attropen(path, name, O_RDONLY, 0);
1594 ret = solaris_read_xattr(attrfd, value, size);
1604 ssize_t sys_lgetxattr (const char *path, const char *name, void *value, size_t size)
1606 #if defined(HAVE_LGETXATTR)
1607 return lgetxattr(path, name, value, size);
1608 #elif defined(HAVE_GETXATTR) && defined(XATTR_ADD_OPT)
1609 int options = XATTR_NOFOLLOW;
1610 return getxattr(path, name, value, size, 0, options);
1611 #elif defined(HAVE_LGETEA)
1612 return lgetea(path, name, value, size);
1613 #elif defined(HAVE_EXTATTR_GET_LINK)
1616 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1617 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1618 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1620 if((retval=extattr_get_link(path, attrnamespace, attrname, NULL, 0)) >= 0) {
1625 if((retval=extattr_get_link(path, attrnamespace, attrname, value, size)) >= 0)
1629 DEBUG(10,("sys_lgetxattr: extattr_get_link() failed with: %s\n", strerror(errno)));
1631 #elif defined(HAVE_ATTR_GET)
1632 int retval, flags = ATTR_DONTFOLLOW;
1633 int valuelength = (int)size;
1634 char *attrname = strchr(name,'.') + 1;
1636 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1638 retval = attr_get(path, attrname, (char *)value, &valuelength, flags);
1640 return retval ? retval : valuelength;
1641 #elif defined(HAVE_ATTROPEN)
1643 int attrfd = solaris_attropen(path, name, O_RDONLY|AT_SYMLINK_NOFOLLOW, 0);
1645 ret = solaris_read_xattr(attrfd, value, size);
1655 ssize_t sys_fgetxattr (int filedes, const char *name, void *value, size_t size)
1657 #if defined(HAVE_FGETXATTR)
1658 #ifndef XATTR_ADD_OPT
1659 return fgetxattr(filedes, name, value, size);
1662 return fgetxattr(filedes, name, value, size, 0, options);
1664 #elif defined(HAVE_FGETEA)
1665 return fgetea(filedes, name, value, size);
1666 #elif defined(HAVE_EXTATTR_GET_FD)
1669 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1670 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1671 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1673 if((retval=extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0)) >= 0) {
1678 if((retval=extattr_get_fd(filedes, attrnamespace, attrname, value, size)) >= 0)
1682 DEBUG(10,("sys_fgetxattr: extattr_get_fd() failed with: %s\n", strerror(errno)));
1684 #elif defined(HAVE_ATTR_GETF)
1685 int retval, flags = 0;
1686 int valuelength = (int)size;
1687 char *attrname = strchr(name,'.') + 1;
1689 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1691 retval = attr_getf(filedes, attrname, (char *)value, &valuelength, flags);
1693 return retval ? retval : valuelength;
1694 #elif defined(HAVE_ATTROPEN)
1696 int attrfd = solaris_openat(filedes, name, O_RDONLY|O_XATTR, 0);
1698 ret = solaris_read_xattr(attrfd, value, size);
1708 #if defined(HAVE_EXTATTR_LIST_FILE)
1710 #define EXTATTR_PREFIX(s) (s), (sizeof((s))-1)
1718 { EXTATTR_NAMESPACE_SYSTEM, EXTATTR_PREFIX("system.") },
1719 { EXTATTR_NAMESPACE_USER, EXTATTR_PREFIX("user.") },
1727 static ssize_t bsd_attr_list (int type, extattr_arg arg, char *list, size_t size)
1729 ssize_t list_size, total_size = 0;
1732 /* Iterate through extattr(2) namespaces */
1733 for(t = 0; t < ARRAY_SIZE(extattr); t++) {
1735 #if defined(HAVE_EXTATTR_LIST_FILE)
1737 list_size = extattr_list_file(arg.path, extattr[t].space, list, size);
1740 #if defined(HAVE_EXTATTR_LIST_LINK)
1742 list_size = extattr_list_link(arg.path, extattr[t].space, list, size);
1745 #if defined(HAVE_EXTATTR_LIST_FD)
1747 list_size = extattr_list_fd(arg.filedes, extattr[t].space, list, size);
1754 /* Some error happend. Errno should be set by the previous call */
1760 /* XXX: Call with an empty buffer may be used to calculate
1761 necessary buffer size. Unfortunately, we can't say, how
1762 many attributes were returned, so here is the potential
1763 problem with the emulation.
1766 /* Take the worse case of one char attribute names -
1767 two bytes per name plus one more for sanity.
1769 total_size += list_size + (list_size/2 + 1)*extattr[t].len;
1772 /* Count necessary offset to fit namespace prefixes */
1774 for(i = 0; i < list_size; i += list[i] + 1)
1775 len += extattr[t].len;
1777 total_size += list_size + len;
1778 /* Buffer is too small to fit the results */
1779 if(total_size > size) {
1783 /* Shift results back, so we can prepend prefixes */
1784 buf = (char *)memmove(list + len, list, list_size);
1786 for(i = 0; i < list_size; i += len + 1) {
1788 strncpy(list, extattr[t].name, extattr[t].len + 1);
1789 list += extattr[t].len;
1790 strncpy(list, buf + i + 1, len);
1801 #if defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
1802 static char attr_buffer[ATTR_MAX_VALUELEN];
1804 static ssize_t irix_attr_list(const char *path, int filedes, char *list, size_t size, int flags)
1806 int retval = 0, index;
1807 attrlist_cursor_t *cursor = 0;
1809 attrlist_t * al = (attrlist_t *)attr_buffer;
1811 size_t ent_size, left = size;
1816 retval = attr_listf(filedes, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1818 retval = attr_list(path, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1820 for (index = 0; index < al->al_count; index++) {
1821 ae = ATTR_ENTRY(attr_buffer, index);
1822 ent_size = strlen(ae->a_name) + sizeof("user.");
1823 if (left >= ent_size) {
1824 strncpy(bp, "user.", sizeof("user."));
1825 strncat(bp, ae->a_name, ent_size - sizeof("user."));
1833 total_size += ent_size;
1835 if (al->al_more == 0) break;
1842 retval = attr_listf(filedes, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1844 retval = attr_list(path, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1846 for (index = 0; index < al->al_count; index++) {
1847 ae = ATTR_ENTRY(attr_buffer, index);
1848 ent_size = strlen(ae->a_name) + sizeof("system.");
1849 if (left >= ent_size) {
1850 strncpy(bp, "system.", sizeof("system."));
1851 strncat(bp, ae->a_name, ent_size - sizeof("system."));
1859 total_size += ent_size;
1861 if (al->al_more == 0) break;
1864 return (ssize_t)(retval ? retval : total_size);
1869 ssize_t sys_listxattr (const char *path, char *list, size_t size)
1871 #if defined(HAVE_LISTXATTR)
1872 #ifndef XATTR_ADD_OPT
1873 return listxattr(path, list, size);
1876 return listxattr(path, list, size, options);
1878 #elif defined(HAVE_LISTEA)
1879 return listea(path, list, size);
1880 #elif defined(HAVE_EXTATTR_LIST_FILE)
1883 return bsd_attr_list(0, arg, list, size);
1884 #elif defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
1885 return irix_attr_list(path, 0, list, size, 0);
1886 #elif defined(HAVE_ATTROPEN)
1888 int attrdirfd = solaris_attropen(path, ".", O_RDONLY, 0);
1889 if (attrdirfd >= 0) {
1890 ret = solaris_list_xattr(attrdirfd, list, size);
1900 ssize_t sys_llistxattr (const char *path, char *list, size_t size)
1902 #if defined(HAVE_LLISTXATTR)
1903 return llistxattr(path, list, size);
1904 #elif defined(HAVE_LISTXATTR) && defined(XATTR_ADD_OPT)
1905 int options = XATTR_NOFOLLOW;
1906 return listxattr(path, list, size, options);
1907 #elif defined(HAVE_LLISTEA)
1908 return llistea(path, list, size);
1909 #elif defined(HAVE_EXTATTR_LIST_LINK)
1912 return bsd_attr_list(1, arg, list, size);
1913 #elif defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
1914 return irix_attr_list(path, 0, list, size, ATTR_DONTFOLLOW);
1915 #elif defined(HAVE_ATTROPEN)
1917 int attrdirfd = solaris_attropen(path, ".", O_RDONLY|AT_SYMLINK_NOFOLLOW, 0);
1918 if (attrdirfd >= 0) {
1919 ret = solaris_list_xattr(attrdirfd, list, size);
1929 ssize_t sys_flistxattr (int filedes, char *list, size_t size)
1931 #if defined(HAVE_FLISTXATTR)
1932 #ifndef XATTR_ADD_OPT
1933 return flistxattr(filedes, list, size);
1936 return flistxattr(filedes, list, size, options);
1938 #elif defined(HAVE_FLISTEA)
1939 return flistea(filedes, list, size);
1940 #elif defined(HAVE_EXTATTR_LIST_FD)
1942 arg.filedes = filedes;
1943 return bsd_attr_list(2, arg, list, size);
1944 #elif defined(HAVE_ATTR_LISTF)
1945 return irix_attr_list(NULL, filedes, list, size, 0);
1946 #elif defined(HAVE_ATTROPEN)
1948 int attrdirfd = solaris_openat(filedes, ".", O_RDONLY|O_XATTR, 0);
1949 if (attrdirfd >= 0) {
1950 ret = solaris_list_xattr(attrdirfd, list, size);
1960 int sys_removexattr (const char *path, const char *name)
1962 #if defined(HAVE_REMOVEXATTR)
1963 #ifndef XATTR_ADD_OPT
1964 return removexattr(path, name);
1967 return removexattr(path, name, options);
1969 #elif defined(HAVE_REMOVEEA)
1970 return removeea(path, name);
1971 #elif defined(HAVE_EXTATTR_DELETE_FILE)
1973 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1974 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1975 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1977 return extattr_delete_file(path, attrnamespace, attrname);
1978 #elif defined(HAVE_ATTR_REMOVE)
1980 char *attrname = strchr(name,'.') + 1;
1982 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1984 return attr_remove(path, attrname, flags);
1985 #elif defined(HAVE_ATTROPEN)
1987 int attrdirfd = solaris_attropen(path, ".", O_RDONLY, 0);
1988 if (attrdirfd >= 0) {
1989 ret = solaris_unlinkat(attrdirfd, name);
1999 int sys_lremovexattr (const char *path, const char *name)
2001 #if defined(HAVE_LREMOVEXATTR)
2002 return lremovexattr(path, name);
2003 #elif defined(HAVE_REMOVEXATTR) && defined(XATTR_ADD_OPT)
2004 int options = XATTR_NOFOLLOW;
2005 return removexattr(path, name, options);
2006 #elif defined(HAVE_LREMOVEEA)
2007 return lremoveea(path, name);
2008 #elif defined(HAVE_EXTATTR_DELETE_LINK)
2010 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
2011 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
2012 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
2014 return extattr_delete_link(path, attrnamespace, attrname);
2015 #elif defined(HAVE_ATTR_REMOVE)
2016 int flags = ATTR_DONTFOLLOW;
2017 char *attrname = strchr(name,'.') + 1;
2019 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
2021 return attr_remove(path, attrname, flags);
2022 #elif defined(HAVE_ATTROPEN)
2024 int attrdirfd = solaris_attropen(path, ".", O_RDONLY|AT_SYMLINK_NOFOLLOW, 0);
2025 if (attrdirfd >= 0) {
2026 ret = solaris_unlinkat(attrdirfd, name);
2036 int sys_fremovexattr (int filedes, const char *name)
2038 #if defined(HAVE_FREMOVEXATTR)
2039 #ifndef XATTR_ADD_OPT
2040 return fremovexattr(filedes, name);
2043 return fremovexattr(filedes, name, options);
2045 #elif defined(HAVE_FREMOVEEA)
2046 return fremoveea(filedes, name);
2047 #elif defined(HAVE_EXTATTR_DELETE_FD)
2049 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
2050 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
2051 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
2053 return extattr_delete_fd(filedes, attrnamespace, attrname);
2054 #elif defined(HAVE_ATTR_REMOVEF)
2056 char *attrname = strchr(name,'.') + 1;
2058 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
2060 return attr_removef(filedes, attrname, flags);
2061 #elif defined(HAVE_ATTROPEN)
2063 int attrdirfd = solaris_openat(filedes, ".", O_RDONLY|O_XATTR, 0);
2064 if (attrdirfd >= 0) {
2065 ret = solaris_unlinkat(attrdirfd, name);
2075 int sys_setxattr (const char *path, const char *name, const void *value, size_t size, int flags)
2077 #if defined(HAVE_SETXATTR)
2078 #ifndef XATTR_ADD_OPT
2079 return setxattr(path, name, value, size, flags);
2082 return setxattr(path, name, value, size, 0, options);
2084 #elif defined(HAVE_SETEA)
2085 return setea(path, name, value, size, flags);
2086 #elif defined(HAVE_EXTATTR_SET_FILE)
2089 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
2090 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
2091 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
2093 /* Check attribute existence */
2094 retval = extattr_get_file(path, attrnamespace, attrname, NULL, 0);
2096 /* REPLACE attribute, that doesn't exist */
2097 if (flags & XATTR_REPLACE && errno == ENOATTR) {
2101 /* Ignore other errors */
2104 /* CREATE attribute, that already exists */
2105 if (flags & XATTR_CREATE) {
2111 retval = extattr_set_file(path, attrnamespace, attrname, value, size);
2112 return (retval < 0) ? -1 : 0;
2113 #elif defined(HAVE_ATTR_SET)
2115 char *attrname = strchr(name,'.') + 1;
2117 if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
2118 if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
2119 if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
2121 return attr_set(path, attrname, (const char *)value, size, myflags);
2122 #elif defined(HAVE_ATTROPEN)
2124 int myflags = O_RDWR;
2126 if (flags & XATTR_CREATE) myflags |= O_EXCL;
2127 if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
2128 attrfd = solaris_attropen(path, name, myflags, (mode_t) SOLARIS_ATTRMODE);
2130 ret = solaris_write_xattr(attrfd, value, size);
2140 int sys_lsetxattr (const char *path, const char *name, const void *value, size_t size, int flags)
2142 #if defined(HAVE_LSETXATTR)
2143 return lsetxattr(path, name, value, size, flags);
2144 #elif defined(HAVE_SETXATTR) && defined(XATTR_ADD_OPT)
2145 int options = XATTR_NOFOLLOW;
2146 return setxattr(path, name, value, size, 0, options);
2147 #elif defined(LSETEA)
2148 return lsetea(path, name, value, size, flags);
2149 #elif defined(HAVE_EXTATTR_SET_LINK)
2152 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
2153 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
2154 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
2156 /* Check attribute existence */
2157 retval = extattr_get_link(path, attrnamespace, attrname, NULL, 0);
2159 /* REPLACE attribute, that doesn't exist */
2160 if (flags & XATTR_REPLACE && errno == ENOATTR) {
2164 /* Ignore other errors */
2167 /* CREATE attribute, that already exists */
2168 if (flags & XATTR_CREATE) {
2175 retval = extattr_set_link(path, attrnamespace, attrname, value, size);
2176 return (retval < 0) ? -1 : 0;
2177 #elif defined(HAVE_ATTR_SET)
2178 int myflags = ATTR_DONTFOLLOW;
2179 char *attrname = strchr(name,'.') + 1;
2181 if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
2182 if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
2183 if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
2185 return attr_set(path, attrname, (const char *)value, size, myflags);
2186 #elif defined(HAVE_ATTROPEN)
2188 int myflags = O_RDWR | AT_SYMLINK_NOFOLLOW;
2190 if (flags & XATTR_CREATE) myflags |= O_EXCL;
2191 if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
2192 attrfd = solaris_attropen(path, name, myflags, (mode_t) SOLARIS_ATTRMODE);
2194 ret = solaris_write_xattr(attrfd, value, size);
2204 int sys_fsetxattr (int filedes, const char *name, const void *value, size_t size, int flags)
2206 #if defined(HAVE_FSETXATTR)
2207 #ifndef XATTR_ADD_OPT
2208 return fsetxattr(filedes, name, value, size, flags);
2211 return fsetxattr(filedes, name, value, size, 0, options);
2213 #elif defined(HAVE_FSETEA)
2214 return fsetea(filedes, name, value, size, flags);
2215 #elif defined(HAVE_EXTATTR_SET_FD)
2218 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
2219 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
2220 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
2222 /* Check attribute existence */
2223 retval = extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0);
2225 /* REPLACE attribute, that doesn't exist */
2226 if (flags & XATTR_REPLACE && errno == ENOATTR) {
2230 /* Ignore other errors */
2233 /* CREATE attribute, that already exists */
2234 if (flags & XATTR_CREATE) {
2240 retval = extattr_set_fd(filedes, attrnamespace, attrname, value, size);
2241 return (retval < 0) ? -1 : 0;
2242 #elif defined(HAVE_ATTR_SETF)
2244 char *attrname = strchr(name,'.') + 1;
2246 if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
2247 if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
2248 if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
2250 return attr_setf(filedes, attrname, (const char *)value, size, myflags);
2251 #elif defined(HAVE_ATTROPEN)
2253 int myflags = O_RDWR | O_XATTR;
2255 if (flags & XATTR_CREATE) myflags |= O_EXCL;
2256 if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
2257 attrfd = solaris_openat(filedes, name, myflags, (mode_t) SOLARIS_ATTRMODE);
2259 ret = solaris_write_xattr(attrfd, value, size);
2269 /**************************************************************************
2270 helper functions for Solaris' EA support
2271 ****************************************************************************/
2272 #ifdef HAVE_ATTROPEN
2273 static ssize_t solaris_read_xattr(int attrfd, void *value, size_t size)
2277 if (fstat(attrfd, &sbuf) == -1) {
2282 /* This is to return the current size of the named extended attribute */
2284 return sbuf.st_size;
2287 /* check size and read xattr */
2288 if (sbuf.st_size > size) {
2293 return read(attrfd, value, sbuf.st_size);
2296 static ssize_t solaris_list_xattr(int attrdirfd, char *list, size_t size)
2301 int newfd = dup(attrdirfd);
2302 /* CAUTION: The originating file descriptor should not be
2303 used again following the call to fdopendir().
2304 For that reason we dup() the file descriptor
2305 here to make things more clear. */
2306 dirp = fdopendir(newfd);
2308 while ((de = readdir(dirp))) {
2309 size_t listlen = strlen(de->d_name) + 1;
2310 if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
2311 /* we don't want "." and ".." here: */
2312 DEBUG(10,("skipped EA %s\n",de->d_name));
2317 /* return the current size of the list of extended attribute names*/
2320 /* check size and copy entrieѕ + nul into list. */
2321 if ((len + listlen) > size) {
2326 strlcpy(list + len, de->d_name, listlen);
2332 if (closedir(dirp) == -1) {
2333 DEBUG(0,("closedir dirp failed: %s\n",strerror(errno)));
2339 static int solaris_unlinkat(int attrdirfd, const char *name)
2341 if (unlinkat(attrdirfd, name, 0) == -1) {
2342 if (errno == ENOENT) {
2350 static int solaris_attropen(const char *path, const char *attrpath, int oflag, mode_t mode)
2352 int filedes = attropen(path, attrpath, oflag, mode);
2353 if (filedes == -1) {
2354 DEBUG(10,("attropen FAILED: path: %s, name: %s, errno: %s\n",path,attrpath,strerror(errno)));
2355 if (errno == EINVAL) {
2364 static int solaris_openat(int fildes, const char *path, int oflag, mode_t mode)
2366 int filedes = openat(fildes, path, oflag, mode);
2367 if (filedes == -1) {
2368 DEBUG(10,("openat FAILED: fd: %d, path: %s, errno: %s\n",filedes,path,strerror(errno)));
2369 if (errno == EINVAL) {
2378 static int solaris_write_xattr(int attrfd, const char *value, size_t size)
2380 if ((ftruncate(attrfd, 0) == 0) && (write(attrfd, value, size) == size)) {
2383 DEBUG(10,("solaris_write_xattr FAILED!\n"));
2387 #endif /*HAVE_ATTROPEN*/
2390 /****************************************************************************
2391 Return the major devicenumber for UNIX extensions.
2392 ****************************************************************************/
2394 uint32 unix_dev_major(SMB_DEV_T dev)
2396 #if defined(HAVE_DEVICE_MAJOR_FN)
2397 return (uint32)major(dev);
2399 return (uint32)(dev >> 8);
2403 /****************************************************************************
2404 Return the minor devicenumber for UNIX extensions.
2405 ****************************************************************************/
2407 uint32 unix_dev_minor(SMB_DEV_T dev)
2409 #if defined(HAVE_DEVICE_MINOR_FN)
2410 return (uint32)minor(dev);
2412 return (uint32)(dev & 0xff);
2417 /*******************************************************************
2418 Return the number of CPUs.
2419 ********************************************************************/
2421 int sys_get_number_of_cores(void)
2425 #if defined(HAVE_SYSCONF)
2426 #if defined(_SC_NPROCESSORS_ONLN)
2427 ret = (int)sysconf(_SC_NPROCESSORS_ONLN);
2429 #if defined(_SC_NPROCESSORS_CONF)
2431 ret = (int)sysconf(_SC_NPROCESSORS_CONF);
2434 #elif defined(HAVE_SYSCTL) && defined(CTL_HW)
2436 unsigned int len = sizeof(ret);
2439 #if defined(HW_AVAILCPU)
2440 name[1] = HW_AVAILCPU;
2442 if (sysctl(name, 2, &ret, &len, NULL, 0) == -1) {
2446 #if defined(HW_NCPU)
2450 if (sysctl(nm, 2, &count, &len, NULL, 0) == -1) {
2463 #if defined(WITH_AIO)
2465 /*******************************************************************
2466 An aio_read wrapper that will deal with 64-bit sizes.
2467 ********************************************************************/
2469 int sys_aio_read(SMB_STRUCT_AIOCB *aiocb)
2471 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_AIOCB64) && defined(HAVE_AIO_READ64)
2472 return aio_read64(aiocb);
2473 #elif defined(HAVE_AIO_READ)
2474 return aio_read(aiocb);
2481 /*******************************************************************
2482 An aio_write wrapper that will deal with 64-bit sizes.
2483 ********************************************************************/
2485 int sys_aio_write(SMB_STRUCT_AIOCB *aiocb)
2487 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_AIOCB64) && defined(HAVE_AIO_WRITE64)
2488 return aio_write64(aiocb);
2489 #elif defined(HAVE_AIO_WRITE)
2490 return aio_write(aiocb);
2497 /*******************************************************************
2498 An aio_return wrapper that will deal with 64-bit sizes.
2499 ********************************************************************/
2501 ssize_t sys_aio_return(SMB_STRUCT_AIOCB *aiocb)
2503 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_AIOCB64) && defined(HAVE_AIO_RETURN64)
2504 return aio_return64(aiocb);
2505 #elif defined(HAVE_AIO_RETURN)
2506 return aio_return(aiocb);
2513 /*******************************************************************
2514 An aio_cancel wrapper that will deal with 64-bit sizes.
2515 ********************************************************************/
2517 int sys_aio_cancel(int fd, SMB_STRUCT_AIOCB *aiocb)
2519 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_AIOCB64) && defined(HAVE_AIO_CANCEL64)
2520 return aio_cancel64(fd, aiocb);
2521 #elif defined(HAVE_AIO_CANCEL)
2522 return aio_cancel(fd, aiocb);
2529 /*******************************************************************
2530 An aio_error wrapper that will deal with 64-bit sizes.
2531 ********************************************************************/
2533 int sys_aio_error(const SMB_STRUCT_AIOCB *aiocb)
2535 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_AIOCB64) && defined(HAVE_AIO_ERROR64)
2536 return aio_error64(aiocb);
2537 #elif defined(HAVE_AIO_ERROR)
2538 return aio_error(aiocb);
2545 /*******************************************************************
2546 An aio_fsync wrapper that will deal with 64-bit sizes.
2547 ********************************************************************/
2549 int sys_aio_fsync(int op, SMB_STRUCT_AIOCB *aiocb)
2551 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_AIOCB64) && defined(HAVE_AIO_FSYNC64)
2552 return aio_fsync64(op, aiocb);
2553 #elif defined(HAVE_AIO_FSYNC)
2554 return aio_fsync(op, aiocb);
2561 /*******************************************************************
2562 An aio_fsync wrapper that will deal with 64-bit sizes.
2563 ********************************************************************/
2565 int sys_aio_suspend(const SMB_STRUCT_AIOCB * const cblist[], int n, const struct timespec *timeout)
2567 #if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_AIOCB64) && defined(HAVE_AIO_SUSPEND64)
2568 return aio_suspend64(cblist, n, timeout);
2569 #elif defined(HAVE_AIO_FSYNC)
2570 return aio_suspend(cblist, n, timeout);
2576 #else /* !WITH_AIO */
2578 int sys_aio_read(SMB_STRUCT_AIOCB *aiocb)
2584 int sys_aio_write(SMB_STRUCT_AIOCB *aiocb)
2590 ssize_t sys_aio_return(SMB_STRUCT_AIOCB *aiocb)
2596 int sys_aio_cancel(int fd, SMB_STRUCT_AIOCB *aiocb)
2602 int sys_aio_error(const SMB_STRUCT_AIOCB *aiocb)
2608 int sys_aio_fsync(int op, SMB_STRUCT_AIOCB *aiocb)
2614 int sys_aio_suspend(const SMB_STRUCT_AIOCB * const cblist[], int n, const struct timespec *timeout)
2619 #endif /* WITH_AIO */