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[BZ #3252, BZ #3253]

Browse Source 
2006-09-25  Jakub Jelinek  <jakub@redhat.com>
	[BZ #3252]
	* sysdeps/unix/sysv/linux/powerpc/fchownat.c (fchownat): Handle only
	fchownat syscall and __ASSUME_LCHOWN_SYSCALL case inline, call
	__{,l}chown to handle the rest.
	* sysdeps/unix/sysv/linux/i386/fchownat.c (fchownat): Handle only
	fchownat syscall and __ASSUME_32BITUIDS case inline, call
	__{,l}chown to handle the rest.
	* sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c: Include
	i386/fchownat.c.
	* sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/fchownat.c: Likewise.

	[BZ #3253]
	* posix/glob.c (glob_in_dir): Don't alloca one struct globlink at a
	time, rather allocate increasingly bigger arrays of pointers, if
	possible with alloca, if too large with malloc.

2006-09-24  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/powerpc/fpu/libm-test-ulps: Updated.

	* sysdeps/ieee754/ldbl-128/s_lrintl.c (__lrintl): Fix 2 typos.
This commit is contained in:
Ulrich Drepper 2006-09-25 15:33:09 +00:00
parent 457b559e2e
commit f1122ec3ae
9 changed files with 164 additions and 593 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
ChangeLog
View File

@ -1,3 +1,28 @@
2006-09-25 Jakub Jelinek <jakub@redhat.com>
[BZ #3252]
* sysdeps/unix/sysv/linux/powerpc/fchownat.c (fchownat): Handle only
fchownat syscall and __ASSUME_LCHOWN_SYSCALL case inline, call
__{,l}chown to handle the rest.
* sysdeps/unix/sysv/linux/i386/fchownat.c (fchownat): Handle only
fchownat syscall and __ASSUME_32BITUIDS case inline, call
__{,l}chown to handle the rest.
* sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c: Include
i386/fchownat.c.
* sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c: Likewise.
* sysdeps/unix/sysv/linux/sh/fchownat.c: Likewise.
[BZ #3253]
* posix/glob.c (glob_in_dir): Don't alloca one struct globlink at a
time, rather allocate increasingly bigger arrays of pointers, if
possible with alloca, if too large with malloc.
2006-09-24 Jakub Jelinek <jakub@redhat.com>
* sysdeps/powerpc/fpu/libm-test-ulps: Updated.
* sysdeps/ieee754/ldbl-128/s_lrintl.c (__lrintl): Fix 2 typos.
2006-09-24 Ulrich Drepper <drepper@redhat.com>
* sysdeps/posix/getaddrinfo.c (rfc3484_sort): Implement rule 4,

142
posix/glob.c
View File

@ -1090,16 +1090,25 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
{
size_t dirlen = strlen (directory);
void *stream = NULL;
struct globlink
struct globnames
{
struct globlink *next;
char *name;
struct globnames *next;
size_t count;
char *name[64];
};
struct globlink *names = NULL;
size_t nfound;
#define INITIAL_COUNT sizeof (init_names.name) / sizeof (init_names.name[0])
struct globnames init_names;
struct globnames *names = &init_names;
struct globnames *names_alloca = &init_names;
size_t nfound = 0;
size_t allocasize = sizeof (init_names);
size_t cur = 0;
int meta;
int save;
init_names.next = NULL;
init_names.count = INITIAL_COUNT;
meta = __glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE));
if (meta == 0 && (flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
{
@ -1107,7 +1116,6 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
characters and we must not return an error therefore the
result will always contain exactly one name. */
flags |= GLOB_NOCHECK;
nfound = 0;
}
else if (meta == 0 &&
((flags & GLOB_NOESCAPE) || strchr (pattern, '\\') == NULL))
@ -1128,8 +1136,6 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
/* We found this file to be existing. Now tell the rest
of the function to copy this name into the result. */
flags |= GLOB_NOCHECK;
nfound = 0;
}
else
{
@ -1137,12 +1143,10 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
{
/* This is a special case for matching directories like in
"*a/". */
names = (struct globlink *) __alloca (sizeof (struct globlink));
names->name = (char *) malloc (1);
if (names->name == NULL)
names->name[cur] = (char *) malloc (1);
if (names->name[cur] == NULL)
goto memory_error;
names->name[0] = '\0';
names->next = NULL;
*names->name[cur++] = '\0';
nfound = 1;
meta = 0;
}
@ -1157,7 +1161,6 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
&& ((errfunc != NULL && (*errfunc) (directory, errno))
|| (flags & GLOB_ERR)))
return GLOB_ABORTED;
nfound = 0;
meta = 0;
}
else
@ -1168,7 +1171,6 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
| FNM_CASEFOLD
#endif
);
nfound = 0;
flags |= GLOB_MAGCHAR;
while (1)
@ -1224,15 +1226,30 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
|| link_exists_p (directory, dirlen, name, pglob,
flags))
{
struct globlink *new = (struct globlink *)
__alloca (sizeof (struct globlink));
if (cur == names->count)
{
struct globnames *newnames;
size_t count = names->count * 2;
size_t size = (sizeof (struct globnames)
+ ((count - INITIAL_COUNT)
* sizeof (char *)));
allocasize += size;
if (__libc_use_alloca (allocasize))
newnames = names_alloca = __alloca (size);
else if ((newnames = malloc (size))
== NULL)
goto memory_error;
newnames->count = count;
newnames->next = names;
names = newnames;
cur = 0;
}
len = NAMLEN (d);
new->name = (char *) malloc (len + 1);
if (new->name == NULL)
names->name[cur] = (char *) malloc (len + 1);
if (names->name[cur] == NULL)
goto memory_error;
*((char *) mempcpy (new->name, name, len)) = '\0';
new->next = names;
names = new;
*((char *) mempcpy (names->name[cur++], name, len))
= '\0';
++nfound;
}
}
@ -1245,59 +1262,76 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
{
size_t len = strlen (pattern);
nfound = 1;
names = (struct globlink *) __alloca (sizeof (struct globlink));
names->next = NULL;
names->name = (char *) malloc (len + 1);
if (names->name == NULL)
names->name[cur] = (char *) malloc (len + 1);
if (names->name[cur] == NULL)
goto memory_error;
*((char *) mempcpy (names->name, pattern, len)) = '\0';
*((char *) mempcpy (names->name[cur++], pattern, len)) = '\0';
}
int result = GLOB_NOMATCH;
if (nfound != 0)
{
char **new_gl_pathv;
result = 0;
char **new_gl_pathv;
new_gl_pathv
= (char **) realloc (pglob->gl_pathv,
(pglob->gl_pathc + pglob->gl_offs + nfound + 1)
* sizeof (char *));
if (new_gl_pathv == NULL)
goto memory_error;
pglob->gl_pathv = new_gl_pathv;
{
memory_error:
while (1)
{
struct globnames *old = names;
for (size_t i = 0; i < cur; ++i)
free (names->name[i]);
names = names->next;
if (names == NULL)
break;
cur = names->count;
if (old == names_alloca)
names_alloca = names;
else
free (old);
}
result = GLOB_NOSPACE;
}
else
{
while (1)
{
struct globnames *old = names;
for (size_t i = 0; i < cur; ++i)
new_gl_pathv[pglob->gl_offs + pglob->gl_pathc++]
= names->name[i];
names = names->next;
if (names == NULL)
break;
cur = names->count;
if (old == names_alloca)
names_alloca = names;
else
free (old);
}
for (; names != NULL; names = names->next)
pglob->gl_pathv[pglob->gl_offs + pglob->gl_pathc++] = names->name;
pglob->gl_pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
pglob->gl_pathv = new_gl_pathv;
pglob->gl_flags = flags;
pglob->gl_pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
pglob->gl_flags = flags;
}
}
save = errno;
if (stream != NULL)
{
save = errno;
if (flags & GLOB_ALTDIRFUNC)
(*pglob->gl_closedir) (stream);
else
closedir (stream);
__set_errno (save);
}
__set_errno (save);
return nfound == 0 ? GLOB_NOMATCH : 0;
memory_error:
{
int save = errno;
if (flags & GLOB_ALTDIRFUNC)
(*pglob->gl_closedir) (stream);
else
closedir (stream);
__set_errno (save);
}
while (names != NULL)
{
if (names->name != NULL)
free (names->name);
names = names->next;
}
return GLOB_NOSPACE;
return result;
}

4
sysdeps/ieee754/ldbl-128/s_lrintl.c
View File

@ -50,7 +50,7 @@ __lrintl (long double x)
{
w = two112[sx] + x;
t = w - two112[sx];
GET_LDOUBLE_WORDS64 (i0, i1, x);
GET_LDOUBLE_WORDS64 (i0, i1, t);
j0 = ((i0 >> 48) & 0x7fff) - 0x3fff;
i0 &= 0x0000ffffffffffffLL;
i0 |= 0x0001000000000000LL;
@ -65,7 +65,7 @@ __lrintl (long double x)
{
w = two112[sx] + x;
t = w - two112[sx];
GET_LDOUBLE_WORDS64 (i0, i1, x);
GET_LDOUBLE_WORDS64 (i0, i1, t);
j0 = ((i0 >> 48) & 0x7fff) - 0x3fff;
i0 &= 0x0000ffffffffffffLL;
i0 |= 0x0001000000000000LL;

16
sysdeps/powerpc/fpu/libm-test-ulps
View File

@ -264,8 +264,8 @@ ldouble: 1
Test "Real part of: clog10 (0.75 + 1.25 i) == 0.163679467193165171449476605077428975 + 0.447486970040493067069984724340855636 i":
float: 1
ifloat: 1
ildouble: 2
ldouble: 2
ildouble: 3
ldouble: 3
Test "Imaginary part of: clog10 (3 + inf i) == inf + pi/2*log10(e) i":
double: 1
float: 1
@ -364,6 +364,8 @@ ldouble: 2
Test "Imaginary part of: csinh (-2 - 3 i) == 3.59056458998577995201256544779481679 - 0.530921086248519805267040090660676560 i":
double: 1
idouble: 1
ildouble: 1
ldouble: 1
Test "Real part of: csinh (0.75 + 1.25 i) == 0.259294854551162779153349830618433028 + 1.22863452409509552219214606515777594 i":
float: 1
ifloat: 1
@ -739,6 +741,9 @@ idouble: 1
ifloat: 1
# y0
Test "y0 (0.125) == -1.38968062514384052915582277745018693":
ildouble: 1
ldouble: 1
Test "y0 (0.75) == -0.137172769385772397522814379396581855":
ildouble: 1
ldouble: 1
@ -800,6 +805,9 @@ ildouble: 2
ldouble: 2
# yn
Test "yn (0, 0.125) == -1.38968062514384052915582277745018693":
ildouble: 1
ldouble: 1
Test "yn (0, 0.75) == -0.137172769385772397522814379396581855":
ildouble: 1
ldouble: 1
@ -1066,8 +1074,8 @@ ldouble: 1
Function: Real part of "clog10":
float: 1
ifloat: 1
ildouble: 2
ldouble: 2
ildouble: 3
ldouble: 3
Function: Imaginary part of "clog10":
double: 1

128
sysdeps/unix/sysv/linux/i386/fchownat.c
View File

@ -30,33 +30,6 @@
#include <linux/posix_types.h>
#include <kernel-features.h>
/*
In Linux 2.1.x the chown functions have been changed. A new function lchown
was introduced. The new chown now follows symlinks - the old chown and the
new lchown do not follow symlinks.
The new lchown function has the same number as the old chown had and the
new chown has a new number. When compiling with headers from Linux > 2.1.8x
it's impossible to run this libc with older kernels. In these cases libc
has therefore to route calls to chown to the old chown function.
*/
extern int __chown_is_lchown (const char *__file, uid_t __owner,
gid_t __group);
extern int __real_chown (const char *__file, uid_t __owner, gid_t __group);
#if defined __NR_lchown || __ASSUME_LCHOWN_SYSCALL > 0
/* Running under Linux > 2.1.80. */
# ifdef __NR_chown32
# if __ASSUME_32BITUIDS == 0
/* This variable is shared with all files that need to check for 32bit
uids. */
extern int __libc_missing_32bit_uids;
# endif
# endif /* __NR_chown32 */
#endif
int
fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag)
@ -105,92 +78,33 @@ fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag)
file = buf;
}
# if __ASSUME_32BITUIDS > 0
/* This implies __ASSUME_LCHOWN_SYSCALL. */
INTERNAL_SYSCALL_DECL (err);
# if defined __NR_lchown || __ASSUME_LCHOWN_SYSCALL > 0
# if __ASSUME_LCHOWN_SYSCALL == 0
static int __libc_old_chown;
# ifdef __NR_chown32
if (__libc_missing_32bit_uids <= 0)
{
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lchown32, err, 3, CHECK_STRING (file),
owner, group);
else
result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file),
owner, group);
if (!INTERNAL_SYSCALL_ERROR_P (result, err))
return result;
if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS)
goto fail;
__libc_missing_32bit_uids = 1;
}
# endif /* __NR_chown32 */
if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U))
|| ((group + 1) > (gid_t) ((__kernel_gid_t) -1U)))
{
__set_errno (EINVAL);
return -1;
}
if (!__libc_old_chown && (flag & AT_SYMLINK_NOFOLLOW) == 0)
{
result = INTERNAL_SYSCALL (chown, err, 3, CHECK_STRING (file), owner,
group);
if (!INTERNAL_SYSCALL_ERROR_P (result, err))
return result;
if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS)
goto fail;
__libc_old_chown = 1;
}
result = INTERNAL_SYSCALL (lchown, err, 3, CHECK_STRING (file), owner,
group);
# elif __ASSUME_32BITUIDS
/* This implies __ASSUME_LCHOWN_SYSCALL. */
result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner,
group);
# else
/* !__ASSUME_32BITUIDS && ASSUME_LCHOWN_SYSCALL */
# ifdef __NR_chown32
if (__libc_missing_32bit_uids <= 0)
{
result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner,
group);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return result;
if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS)
goto fail;
__libc_missing_32bit_uids = 1;
}
# endif /* __NR_chown32 */
if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U))
|| ((group + 1) > (gid_t) ((__kernel_gid_t) -1U)))
{
__set_errno (EINVAL);
return -1;
}
result = INTERNAL_SYSCALL (chown, err, 3, CHECK_STRING (file), owner, group);
# endif
# else
result = INTERNAL_SYSCALL (chown, err, 3, CHECK_STRING (file), owner, group);
# endif
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lchown32, err, 3, CHECK_STRING (file), owner,
group);
else
result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner,
group);
if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0))
goto fail;
{
__atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
return -1;
}
# else
/* Don't inline the rest to avoid unnecessary code duplication. */
if (flag & AT_SYMLINK_NOFOLLOW)
result = __lchown (file, owner, group);
else
result = __chown (file, owner, group);
if (result < 0)
__atfct_seterrno (errno, fd, buf);
# endif
return result;
fail:
__atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
return -1;
#endif
}

139
sysdeps/unix/sysv/linux/powerpc/fchownat.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2005 Free Software Foundation, Inc.
/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -81,143 +81,30 @@ fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag)
file = buf;
}
# if __ASSUME_LCHOWN_SYSCALL
INTERNAL_SYSCALL_DECL (err);
# if __ASSUME_LCHOWN_SYSCALL
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lchown, err, 3, file, owner, group);
else
result = INTERNAL_SYSCALL (chown, err, 3, file, owner, group);
# else
char link[PATH_MAX + 2];
char path[2 * PATH_MAX + 4];
int loopct;
size_t filelen;
static int libc_old_chown = 0 /* -1=old linux, 1=new linux, 0=unknown */;
if (libc_old_chown == 1)
{
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lchown, err, 3, __ptrvalue (file), owner,
group);
else
result = INTERNAL_SYSCALL (chown, err, 3, __ptrvalue (file), owner,
group);
goto out;
}
# ifdef __NR_lchown
if (flag & AT_SYMLINK_NOFOLLOW)
{
result = INTERNAL_SYSCALL (lchown, err, 3, __ptrvalue (file), owner,
group);
goto out;
}
if (libc_old_chown == 0)
{
result = INTERNAL_SYSCALL (chown, err, 3, __ptrvalue (file), owner,
group);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return result;
if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS)
{
libc_old_chown = 1;
goto fail;
}
libc_old_chown = -1;
}
# else
if (flag & AT_SYMLINK_NOFOLLOW)
{
result = INTERNAL_SYSCALL (chown, err, 3, __ptrvalue (file), owner,
group);
goto out;
}
# endif
result = __readlink (file, link, PATH_MAX + 1);
if (result == -1)
{
# ifdef __NR_lchown
result = INTERNAL_SYSCALL (lchown, err, 3, __ptrvalue (file), owner,
group);
# else
result = INTERNAL_SYSCALL (chown, err, 3, __ptrvalue (file), owner,
group);
# endif
goto out;
}
filelen = strlen (file) + 1;
if (filelen > sizeof (path))
{
errno = ENAMETOOLONG;
return -1;
}
memcpy (path, file, filelen);
/* 'The system has an arbitrary limit...' In practise, we'll hit
ENAMETOOLONG before this, usually. */
for (loopct = 0; loopct < 128; ++loopct)
{
size_t linklen;
if (result >= PATH_MAX + 1)
{
errno = ENAMETOOLONG;
return -1;
}
link[result] = 0; /* Null-terminate string, just-in-case. */
linklen = strlen (link) + 1;
if (link[0] == '/')
memcpy (path, link, linklen);
else
{
filelen = strlen (path);
while (filelen > 1 && path[filelen - 1] == '/')
--filelen;
while (filelen > 0 && path[filelen - 1] != '/')
--filelen;
if (filelen + linklen > sizeof (path))
{
errno = ENAMETOOLONG;
return -1;
}
memcpy (path + filelen, link, linklen);
}
result = __readlink (path, link, PATH_MAX + 1);
if (result == -1)
{
# ifdef __NR_lchown
result = INTERNAL_SYSCALL (lchown, err, 3, path, owner, group);
# else
result = INTERNAL_SYSCALL (chown, err, 3, path, owner, group);
# endif
goto out;
}
}
__set_errno (ELOOP);
return -1;
out:
# endif
if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0))
{
# if !__ASSUME_LCHOWN_SYSCALL
fail:
# endif
__atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
result = -1;
return -1;
}
# else
/* Don't inline the rest to avoid unnecessary code duplication. */
if (flag & AT_SYMLINK_NOFOLLOW)
result = __lchown (file, owner, group);
else
result = __chown (file, owner, group);
if (result < 0)
__atfct_seterrno (errno, fd, buf);
# endif
return result;
#endif
}

160
sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c
View File

@ -1,159 +1 @@
/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <shlib-compat.h>
#include <bp-checks.h>
#include <linux/posix_types.h>
#include <kernel-features.h>
/*
In Linux 2.1.x the chown functions have been changed. A new function lchown
was introduced. The new chown now follows symlinks - the old chown and the
new lchown do not follow symlinks.
The new lchown function has the same number as the old chown had and the
new chown has a new number. When compiling with headers from Linux > 2.1.8x
it's impossible to run this libc with older kernels. In these cases libc
has therefore to route calls to chown to the old chown function.
*/
/* Running under Linux > 2.1.80. */
#ifdef __NR_chown32
# if __ASSUME_32BITUIDS == 0
/* This variable is shared with all files that need to check for 32bit
uids. */
extern int __libc_missing_32bit_uids;
# endif
#endif /* __NR_chown32 */
int
fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag)
{
int result;
#ifdef __NR_fchownat
# ifndef __ASSUME_ATFCTS
if (__have_atfcts >= 0)
# endif
{
result = INLINE_SYSCALL (fchownat, 5, fd, file, owner, group, flag);
# ifndef __ASSUME_ATFCTS
if (result == -1 && errno == ENOSYS)
__have_atfcts = -1;
else
# endif
return result;
}
#endif
#ifndef __ASSUME_ATFCTS
if (flag & ~AT_SYMLINK_NOFOLLOW)
{
__set_errno (EINVAL);
return -1;
}
char *buf = NULL;
if (fd != AT_FDCWD && file[0] != '/')
{
size_t filelen = strlen (file);
static const char procfd[] = "/proc/self/fd/%d/%s";
/* Buffer for the path name we are going to use. It consists of
- the string /proc/self/fd/
- the file descriptor number
- the file name provided.
The final NUL is included in the sizeof. A bit of overhead
due to the format elements compensates for possible negative
numbers. */
size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen;
buf = alloca (buflen);
__snprintf (buf, buflen, procfd, fd, file);
file = buf;
}
INTERNAL_SYSCALL_DECL (err);
# if __ASSUME_32BITUIDS > 0
result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner,
group);
# else
static int __libc_old_chown;
# ifdef __NR_chown32
if (__libc_missing_32bit_uids <= 0)
{
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lchown32, err, 3, CHECK_STRING (file),
owner, group);
else
result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file),
owner, group);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return result;
if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS)
goto fail;
__libc_missing_32bit_uids = 1;
}
# endif /* __NR_chown32 */
if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U))
|| ((group + 1) > (gid_t) ((__kernel_gid_t) -1U)))
{
__set_errno (EINVAL);
return -1;
}
if (!__libc_old_chown && (flag & AT_SYMLINK_NOFOLLOW) == 0)
{
result = INTERNAL_SYSCALL (chown, err, 3, CHECK_STRING (file), owner,
group);
if (!INTERNAL_SYSCALL_ERROR_P (result, err))
return result;
if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS)
goto fail;
__libc_old_chown = 1;
}
result = INTERNAL_SYSCALL (lchown, err, 3, CHECK_STRING (file), owner,
group);
# endif
if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0))
{
fail:
__atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
result = -1;
}
return result;
#endif
}
#include <sysdeps/unix/sysv/linux/i386/fchownat.c>

141
sysdeps/unix/sysv/linux/sh/fchownat.c
View File

@ -1,140 +1 @@
/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <bp-checks.h>
#include <linux/posix_types.h>
#include <kernel-features.h>
#ifdef __NR_chown32
# if __ASSUME_32BITUIDS == 0
/* This variable is shared with all files that need to check for 32bit
uids. */
extern int __libc_missing_32bit_uids;
# endif
#endif /* __NR_chown32 */
int
fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag)
{
int result;
#ifdef __NR_fchownat
# ifndef __ASSUME_ATFCTS
if (__have_atfcts >= 0)
# endif
{
result = INLINE_SYSCALL (fchownat, 5, fd, file, owner, group, flag);
# ifndef __ASSUME_ATFCTS
if (result == -1 && errno == ENOSYS)
__have_atfcts = -1;
else
# endif
return result;
}
#endif
#ifndef __ASSUME_ATFCTS
if (flag & ~AT_SYMLINK_NOFOLLOW)
{
__set_errno (EINVAL);
return -1;
}
char *buf = NULL;
if (fd != AT_FDCWD && file[0] != '/')
{
size_t filelen = strlen (file);
static const char procfd[] = "/proc/self/fd/%d/%s";
/* Buffer for the path name we are going to use. It consists of
- the string /proc/self/fd/
- the file descriptor number
- the file name provided.
The final NUL is included in the sizeof. A bit of overhead
due to the format elements compensates for possible negative
numbers. */
size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen;
buf = alloca (buflen);
__snprintf (buf, buflen, procfd, fd, file);
file = buf;
}
INTERNAL_SYSCALL_DECL (err);
# if __ASSUME_32BITUIDS > 0
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lchown32, err, 3, CHECK_STRING (file), owner,
group);
else
result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner,
group);
# else
# ifdef __NR_chown32
if (__libc_missing_32bit_uids <= 0)
{
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lchown32, err, 3, CHECK_STRING (file),
owner, group);
else
result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner,
group);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return result;
if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS)
goto fail;
__libc_missing_32bit_uids = 1;
}
# endif /* __NR_chown32 */
if (((owner + 1) > (gid_t) ((__kernel_uid_t) -1U))
|| ((group + 1) > (gid_t) ((__kernel_gid_t) -1U)))
{
__set_errno (EINVAL);
return -1;
}
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lchown, err, 3, CHECK_STRING (file), owner,
group);
else
result = INTERNAL_SYSCALL (chown, err, 3, CHECK_STRING (file), owner,
group);
# endif
if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0))
{
fail:
__atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
result = -1;
}
return result;
#endif
}
#include <sysdeps/unix/sysv/linux/i386/fchownat.c>

2
sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c
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@ -1 +1 @@
#include <sysdeps/unix/sysv/linux/sh/fchownat.c>
#include <sysdeps/unix/sysv/linux/i386/fchownat.c>