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posix/glob.c: update from gnulib

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Copied from gnulib/lib/glob.c in order to fix rhbz 1982608
Also fixes swbz 25659

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit 7c477b57a3)
This commit is contained in:
DJ Delorie 2022-03-30 17:44:02 -04:00
parent 88a8637cb4
commit c66c92181d
2 changed files with 59 additions and 12 deletions
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70
posix/glob.c
View File

@ -21,13 +21,14 @@
optimizes away the pattern == NULL test below. */
# define _GL_ARG_NONNULL(params)
# include <config.h>
# include <libc-config.h>
#endif
#include <glob.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdbool.h>
@ -56,6 +57,8 @@
# define sysconf(id) __sysconf (id)
# define closedir(dir) __closedir (dir)
# define opendir(name) __opendir (name)
# undef dirfd
# define dirfd(str) __dirfd (str)
# define readdir(str) __readdir64 (str)
# define getpwnam_r(name, bufp, buf, len, res) \
__getpwnam_r (name, bufp, buf, len, res)
@ -69,11 +72,8 @@
# ifndef GLOB_LSTAT
# define GLOB_LSTAT gl_lstat
# endif
# ifndef GLOB_STAT64
# define GLOB_STAT64 __stat64
# endif
# ifndef GLOB_LSTAT64
# define GLOB_LSTAT64 __lstat64
# ifndef GLOB_FSTATAT64
# define GLOB_FSTATAT64 __fstatat64
# endif
# include <shlib-compat.h>
#else /* !_LIBC */
@ -88,8 +88,7 @@
# define struct_stat struct stat
# define struct_stat64 struct stat
# define GLOB_LSTAT gl_lstat
# define GLOB_STAT64 stat
# define GLOB_LSTAT64 lstat
# define GLOB_FSTATAT64 fstatat
#endif /* _LIBC */
#include <fnmatch.h>
@ -215,7 +214,8 @@ glob_lstat (glob_t *pglob, int flags, const char *fullname)
} ust;
return (__glibc_unlikely (flags & GLOB_ALTDIRFUNC)
? pglob->GLOB_LSTAT (fullname, &ust.st)
: GLOB_LSTAT64 (fullname, &ust.st64));
: GLOB_FSTATAT64 (AT_FDCWD, fullname, &ust.st64,
AT_SYMLINK_NOFOLLOW));
}
/* Set *R = A + B. Return true if the answer is mathematically
@ -257,7 +257,8 @@ is_dir (char const *filename, int flags, glob_t const *pglob)
struct_stat64 st64;
return (__glibc_unlikely (flags & GLOB_ALTDIRFUNC)
? pglob->gl_stat (filename, &st) == 0 && S_ISDIR (st.st_mode)
: GLOB_STAT64 (filename, &st64) == 0 && S_ISDIR (st64.st_mode));
: (GLOB_FSTATAT64 (AT_FDCWD, filename, &st64, 0) == 0
&& S_ISDIR (st64.st_mode)));
}
/* Find the end of the sub-pattern in a brace expression. */
@ -747,6 +748,8 @@ __glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
else
{
#ifndef WINDOWS32
/* Recognize ~user as a shorthand for the specified user's home
directory. */
char *end_name = strchr (dirname, '/');
char *user_name;
int malloc_user_name = 0;
@ -885,7 +888,22 @@ __glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
}
scratch_buffer_free (&pwtmpbuf);
}
#endif /* !WINDOWS32 */
#else /* WINDOWS32 */
/* On native Windows, access to a user's home directory
(via GetUserProfileDirectory) or to a user's environment
variables (via ExpandEnvironmentStringsForUser) requires
the credentials of the user. Therefore we cannot support
the ~user syntax on this platform.
Handling ~user specially (and treat it like plain ~) if
user is getenv ("USERNAME") would not be a good idea,
since it would make people think that ~user is supported
in general. */
if (flags & GLOB_TILDE_CHECK)
{
retval = GLOB_NOMATCH;
goto out;
}
#endif /* WINDOWS32 */
}
}
@ -1266,6 +1284,8 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
{
size_t dirlen = strlen (directory);
void *stream = NULL;
struct scratch_buffer s;
scratch_buffer_init (&s);
# define GLOBNAMES_MEMBERS(nnames) \
struct globnames *next; size_t count; char *name[nnames];
struct globnames { GLOBNAMES_MEMBERS (FLEXIBLE_ARRAY_MEMBER) };
@ -1337,6 +1357,7 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
}
else
{
int dfd = dirfd (stream);
int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
| ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0));
flags |= GLOB_MAGCHAR;
@ -1364,8 +1385,32 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
if (flags & GLOB_ONLYDIR)
switch (readdir_result_type (d))
{
case DT_DIR: case DT_LNK: case DT_UNKNOWN: break;
default: continue;
case DT_DIR: break;
case DT_LNK: case DT_UNKNOWN:
/* The filesystem was too lazy to give us a hint,
so we have to do it the hard way. */
if (__glibc_unlikely (dfd < 0 || flags & GLOB_ALTDIRFUNC))
{
size_t namelen = strlen (d.name);
size_t need = dirlen + 1 + namelen + 1;
if (s.length < need
&& !scratch_buffer_set_array_size (&s, need, 1))
goto memory_error;
char *p = mempcpy (s.data, directory, dirlen);
*p = '/';
p += p[-1] != '/';
memcpy (p, d.name, namelen + 1);
if (! is_dir (s.data, flags, pglob))
continue;
}
else
{
struct_stat64 st64;
if (! (GLOB_FSTATAT64 (dfd, d.name, &st64, 0) == 0
&& S_ISDIR (st64.st_mode)))
continue;
}
}
if (fnmatch (pattern, d.name, fnm_flags) == 0)
@ -1497,5 +1542,6 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
__set_errno (save);
}
scratch_buffer_free (&s);
return result;
}

1
sysdeps/unix/sysv/linux/glob64-time64.c
View File

@ -37,6 +37,7 @@
# define GLOB_LSTAT gl_lstat
# define GLOB_STAT64 __stat64_time64
# define GLOB_LSTAT64 __lstat64_time64
# define GLOB_FSTATAT64 __fstatat64_time64
# define COMPILE_GLOB64 1