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Diffstat (limited to 'posix/glob.c')
| -rw-r--r-- | posix/glob.c | 1558 |
1 files changed, 1558 insertions, 0 deletions
diff --git a/posix/glob.c b/posix/glob.c new file mode 100644 index 0000000000..2e767304a7 --- /dev/null +++ b/posix/glob.c @@ -0,0 +1,1558 @@ +/* Copyright (C) 1991-2002,2003,2004,2005 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. */ + +/* AIX requires this to be the first thing in the file. */ +#if defined _AIX && !defined __GNUC__ + #pragma alloca +#endif + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +/* Enable GNU extensions in glob.h. */ +#ifndef _GNU_SOURCE +# define _GNU_SOURCE 1 +#endif + +#include <errno.h> +#include <sys/types.h> +#include <sys/stat.h> + +/* Outcomment the following line for production quality code. */ +/* #define NDEBUG 1 */ +#include <assert.h> + +#include <stdio.h> /* Needed on stupid SunOS for assert. */ + + +/* Comment out all this code if we are using the GNU C Library, and are not + actually compiling the library itself. This code is part of the GNU C + Library, but also included in many other GNU distributions. Compiling + and linking in this code is a waste when using the GNU C library + (especially if it is a shared library). Rather than having every GNU + program understand `configure --with-gnu-libc' and omit the object files, + it is simpler to just do this in the source for each such file. */ + +#define GLOB_INTERFACE_VERSION 1 +#if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1 +# include <gnu-versions.h> +# if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION +# define ELIDE_CODE +# endif +#endif + +#ifndef ELIDE_CODE +#if !defined _LIBC || !defined GLOB_ONLY_P + +#if defined STDC_HEADERS || defined __GNU_LIBRARY__ +# include <stddef.h> +#endif + +#if defined HAVE_UNISTD_H || defined _LIBC +# include <unistd.h> +# ifndef POSIX +# ifdef _POSIX_VERSION +# define POSIX +# endif +# endif +#endif + +#if !defined _AMIGA && !defined VMS && !defined WINDOWS32 +# include <pwd.h> +#endif + +#if !defined __GNU_LIBRARY__ && !defined STDC_HEADERS +extern int errno; +#endif +#ifndef __set_errno +# define __set_errno(val) errno = (val) +#endif + +#ifndef NULL +# define NULL 0 +#endif + + +#if defined HAVE_DIRENT_H || defined __GNU_LIBRARY__ +# include <dirent.h> +# define NAMLEN(dirent) strlen((dirent)->d_name) +#else +# define dirent direct +# define NAMLEN(dirent) (dirent)->d_namlen +# ifdef HAVE_SYS_NDIR_H +# include <sys/ndir.h> +# endif +# ifdef HAVE_SYS_DIR_H +# include <sys/dir.h> +# endif +# ifdef HAVE_NDIR_H +# include <ndir.h> +# endif +# ifdef HAVE_VMSDIR_H +# include "vmsdir.h" +# endif /* HAVE_VMSDIR_H */ +#endif + + +/* In GNU systems, <dirent.h> defines this macro for us. */ +#ifdef _D_NAMLEN +# undef NAMLEN +# define NAMLEN(d) _D_NAMLEN(d) +#endif + +/* When used in the GNU libc the symbol _DIRENT_HAVE_D_TYPE is available + if the `d_type' member for `struct dirent' is available. */ +#ifdef _DIRENT_HAVE_D_TYPE +# define HAVE_D_TYPE 1 +#endif + +#if _LIBC +# define HAVE_DIRENT64 1 +#endif + +/* If the system has the `struct dirent64' type we use it internally. */ +#if defined HAVE_DIRENT64 && !defined COMPILE_GLOB64 +# if defined HAVE_DIRENT_H || defined __GNU_LIBRARY__ +# define CONVERT_D_NAMLEN(d64, d32) +# else +# define CONVERT_D_NAMLEN(d64, d32) \ + (d64)->d_namlen = (d32)->d_namlen; +# endif + +# if (defined POSIX || defined WINDOWS32) && !defined __GNU_LIBRARY__ +# define CONVERT_D_INO(d64, d32) +# else +# define CONVERT_D_INO(d64, d32) \ + (d64)->d_ino = (d32)->d_ino; +# endif + +# ifdef HAVE_D_TYPE +# define CONVERT_D_TYPE(d64, d32) \ + (d64)->d_type = (d32)->d_type; +# else +# define CONVERT_D_TYPE(d64, d32) +# endif + +# define CONVERT_DIRENT_DIRENT64(d64, d32) \ + memcpy ((d64)->d_name, (d32)->d_name, NAMLEN (d32) + 1); \ + CONVERT_D_NAMLEN (d64, d32) \ + CONVERT_D_INO (d64, d32) \ + CONVERT_D_TYPE (d64, d32) +#endif + + +#if (defined POSIX || defined WINDOWS32) && !defined __GNU_LIBRARY__ +/* Posix does not require that the d_ino field be present, and some + systems do not provide it. */ +# define REAL_DIR_ENTRY(dp) 1 +#else +# define REAL_DIR_ENTRY(dp) (dp->d_ino != 0) +#endif /* POSIX */ + +#if defined STDC_HEADERS || defined __GNU_LIBRARY__ +# include <stdlib.h> +# include <string.h> +# define ANSI_STRING +#else /* No standard headers. */ + +extern char *getenv (); + +# ifdef HAVE_STRING_H +# include <string.h> +# define ANSI_STRING +# else +# include <strings.h> +# endif +# ifdef HAVE_MEMORY_H +# include <memory.h> +# endif + +extern char *malloc (), *realloc (); +extern void free (); + +extern void qsort (); +extern void abort (), exit (); + +#endif /* Standard headers. */ + +/* NAME_MAX is usually defined in <dirent.h> or <limits.h>. */ +#if defined HAVE_LIMITS_H || defined __GNU_LIBRARY__ +# include <limits.h> +#endif +#ifndef NAME_MAX +# define NAME_MAX (sizeof (((struct dirent *) 0)->d_name)) +#endif + +#ifndef ANSI_STRING + +# ifndef bzero +extern void bzero (); +# endif +# ifndef bcopy +extern void bcopy (); +# endif + +# define memcpy(d, s, n) bcopy ((s), (d), (n)) +# define strrchr rindex +/* memset is only used for zero here, but let's be paranoid. */ +# define memset(s, better_be_zero, n) \ + ((void) ((better_be_zero) == 0 ? (bzero((s), (n)), 0) : (abort(), 0))) +#endif /* Not ANSI_STRING. */ + +#if !defined HAVE_STRCOLL && !defined _LIBC +# define strcoll strcmp +#endif + +#if !defined HAVE_MEMPCPY && __GLIBC__ - 0 == 2 && __GLIBC_MINOR__ >= 1 +# define HAVE_MEMPCPY 1 +# undef mempcpy +# define mempcpy(Dest, Src, Len) __mempcpy (Dest, Src, Len) +#endif + +#ifndef __GNU_LIBRARY__ +# ifdef __GNUC__ +__inline +# endif +# ifndef __SASC +# ifdef WINDOWS32 +static void * +# else +static char * +# endif +my_realloc (p, n) + char *p; + unsigned int n; +{ + /* These casts are the for sake of the broken Ultrix compiler, + which warns of illegal pointer combinations otherwise. */ + if (p == NULL) + return (char *) malloc (n); + return (char *) realloc (p, n); +} +# define realloc my_realloc +# endif /* __SASC */ +#endif /* __GNU_LIBRARY__ */ + + +#if !defined __alloca && !defined __GNU_LIBRARY__ + +# ifdef __GNUC__ +# undef alloca +# define alloca(n) __builtin_alloca (n) +# else /* Not GCC. */ +# ifdef HAVE_ALLOCA_H +# include <alloca.h> +# else /* Not HAVE_ALLOCA_H. */ +# ifndef _AIX +# ifdef WINDOWS32 +# include <malloc.h> +# else +extern char *alloca (); +# endif /* WINDOWS32 */ +# endif /* Not _AIX. */ +# endif /* sparc or HAVE_ALLOCA_H. */ +# endif /* GCC. */ + +# define __alloca alloca + +#endif + +#ifndef __GNU_LIBRARY__ +# define __stat stat +# ifdef STAT_MACROS_BROKEN +# undef S_ISDIR +# endif +# ifndef S_ISDIR +# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) +# endif +#endif + +#ifdef _LIBC +# include <alloca.h> +# undef strdup +# define strdup(str) __strdup (str) +# define sysconf(id) __sysconf (id) +# define closedir(dir) __closedir (dir) +# define opendir(name) __opendir (name) +# define readdir(str) __readdir64 (str) +# define getpwnam_r(name, bufp, buf, len, res) \ + __getpwnam_r (name, bufp, buf, len, res) +# ifndef __stat64 +# define __stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf) +# endif +# define HAVE_STAT64 1 +#endif + +#ifndef HAVE_STAT64 +# define __stat64(fname, buf) __stat (fname, buf) +/* This is the variable name we are using. */ +# define st64 st +#endif + +#if !(defined STDC_HEADERS || defined __GNU_LIBRARY__) +# undef size_t +# define size_t unsigned int +#endif + +/* Some system header files erroneously define these. + We want our own definitions from <fnmatch.h> to take precedence. */ +#ifndef __GNU_LIBRARY__ +# undef FNM_PATHNAME +# undef FNM_NOESCAPE +# undef FNM_PERIOD +#endif +#include <fnmatch.h> + +/* Some system header files erroneously define these. + We want our own definitions from <glob.h> to take precedence. */ +#ifndef __GNU_LIBRARY__ +# undef GLOB_ERR +# undef GLOB_MARK +# undef GLOB_NOSORT +# undef GLOB_DOOFFS +# undef GLOB_NOCHECK +# undef GLOB_APPEND +# undef GLOB_NOESCAPE +# undef GLOB_PERIOD +#endif +#include <glob.h> + +#ifdef HAVE_GETLOGIN_R +extern int getlogin_r (char *, size_t); +#else +extern char *getlogin (void); +#endif + +static const char *next_brace_sub (const char *begin, int flags) __THROW; + +#endif /* GLOB_ONLY_P */ + +static int glob_in_dir (const char *pattern, const char *directory, + int flags, int (*errfunc) (const char *, int), + glob_t *pglob); + +#if !defined _LIBC || !defined GLOB_ONLY_P +static int prefix_array (const char *prefix, char **array, size_t n) __THROW; +static int collated_compare (const __ptr_t, const __ptr_t) __THROW; + + +/* Find the end of the sub-pattern in a brace expression. */ +static const char * +next_brace_sub (cp, flags) + const char *cp; + int flags; +{ + unsigned int depth = 0; + while (*cp != '\0') + if ((flags & GLOB_NOESCAPE) == 0 && *cp == '\\') + { + if (*++cp == '\0') + break; + ++cp; + } + else + { + if ((*cp == '}' && depth-- == 0) || (*cp == ',' && depth == 0)) + break; + + if (*cp++ == '{') + depth++; + } + + return *cp != '\0' ? cp : NULL; +} + +#endif /* !GLOB_ONLY_P */ + +/* Do glob searching for PATTERN, placing results in PGLOB. + The bits defined above may be set in FLAGS. + If a directory cannot be opened or read and ERRFUNC is not nil, + it is called with the pathname that caused the error, and the + `errno' value from the failing call; if it returns non-zero + `glob' returns GLOB_ABORTED; if it returns zero, the error is ignored. + If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned. + Otherwise, `glob' returns zero. */ +int +#ifdef GLOB_ATTRIBUTE +GLOB_ATTRIBUTE +#endif +glob (pattern, flags, errfunc, pglob) + const char *pattern; + int flags; + int (*errfunc) (const char *, int); + glob_t *pglob; +{ + const char *filename; + const char *dirname; + size_t dirlen; + int status; + size_t oldcount; + + if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0) + { + __set_errno (EINVAL); + return -1; + } + + if (!(flags & GLOB_DOOFFS)) + /* Have to do this so `globfree' knows where to start freeing. It + also makes all the code that uses gl_offs simpler. */ + pglob->gl_offs = 0; + + if (flags & GLOB_BRACE) + { + const char *begin; + + if (flags & GLOB_NOESCAPE) + begin = strchr (pattern, '{'); + else + { + begin = pattern; + while (1) + { + if (*begin == '\0') + { + begin = NULL; + break; + } + + if (*begin == '\\' && begin[1] != '\0') + ++begin; + else if (*begin == '{') + break; + + ++begin; + } + } + + if (begin != NULL) + { + /* Allocate working buffer large enough for our work. Note that + we have at least an opening and closing brace. */ + size_t firstc; + char *alt_start; + const char *p; + const char *next; + const char *rest; + size_t rest_len; +#ifdef __GNUC__ + char onealt[strlen (pattern) - 1]; +#else + char *onealt = (char *) malloc (strlen (pattern) - 1); + if (onealt == NULL) + { + if (!(flags & GLOB_APPEND)) + { + pglob->gl_pathc = 0; + pglob->gl_pathv = NULL; + } + return GLOB_NOSPACE; + } +#endif + + /* We know the prefix for all sub-patterns. */ +#ifdef HAVE_MEMPCPY + alt_start = mempcpy (onealt, pattern, begin - pattern); +#else + memcpy (onealt, pattern, begin - pattern); + alt_start = &onealt[begin - pattern]; +#endif + + /* Find the first sub-pattern and at the same time find the + rest after the closing brace. */ + next = next_brace_sub (begin + 1, flags); + if (next == NULL) + { + /* It is an illegal expression. */ +#ifndef __GNUC__ + free (onealt); +#endif + return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob); + } + + /* Now find the end of the whole brace expression. */ + rest = next; + while (*rest != '}') + { + rest = next_brace_sub (rest + 1, flags); + if (rest == NULL) + { + /* It is an illegal expression. */ +#ifndef __GNUC__ + free (onealt); +#endif + return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob); + } + } + /* Please note that we now can be sure the brace expression + is well-formed. */ + rest_len = strlen (++rest) + 1; + + /* We have a brace expression. BEGIN points to the opening {, + NEXT points past the terminator of the first element, and END + points past the final }. We will accumulate result names from + recursive runs for each brace alternative in the buffer using + GLOB_APPEND. */ + + if (!(flags & GLOB_APPEND)) + { + /* This call is to set a new vector, so clear out the + vector so we can append to it. */ + pglob->gl_pathc = 0; + pglob->gl_pathv = NULL; + } + firstc = pglob->gl_pathc; + + p = begin + 1; + while (1) + { + int result; + + /* Construct the new glob expression. */ +#ifdef HAVE_MEMPCPY + mempcpy (mempcpy (alt_start, p, next - p), rest, rest_len); +#else + memcpy (alt_start, p, next - p); + memcpy (&alt_start[next - p], rest, rest_len); +#endif + + result = glob (onealt, + ((flags & ~(GLOB_NOCHECK | GLOB_NOMAGIC)) + | GLOB_APPEND), errfunc, pglob); + + /* If we got an error, return it. */ + if (result && result != GLOB_NOMATCH) + { +#ifndef __GNUC__ + free (onealt); +#endif + if (!(flags & GLOB_APPEND)) + { + globfree (pglob); + pglob->gl_pathc = 0; + } + return result; + } + + if (*next == '}') + /* We saw the last entry. */ + break; + + p = next + 1; + next = next_brace_sub (p, flags); + assert (next != NULL); + } + +#ifndef __GNUC__ + free (onealt); +#endif + + if (pglob->gl_pathc != firstc) + /* We found some entries. */ + return 0; + else if (!(flags & (GLOB_NOCHECK|GLOB_NOMAGIC))) + return GLOB_NOMATCH; + } + } + + /* Find the filename. */ + filename = strrchr (pattern, '/'); +#if defined __MSDOS__ || defined WINDOWS32 + /* The case of "d:pattern". Since `:' is not allowed in + file names, we can safely assume that wherever it + happens in pattern, it signals the filename part. This + is so we could some day support patterns like "[a-z]:foo". */ + if (filename == NULL) + filename = strchr (pattern, ':'); +#endif /* __MSDOS__ || WINDOWS32 */ + if (filename == NULL) + { + /* This can mean two things: a simple name or "~name". The latter + case is nothing but a notation for a directory. */ + if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && pattern[0] == '~') + { + dirname = pattern; + dirlen = strlen (pattern); + + /* Set FILENAME to NULL as a special flag. This is ugly but + other solutions would require much more code. We test for + this special case below. */ + filename = NULL; + } + else + { + filename = pattern; +#ifdef _AMIGA + dirname = ""; +#else + dirname = "."; +#endif + dirlen = 0; + } + } + else if (filename == pattern) + { + /* "/pattern". */ + dirname = "/"; + dirlen = 1; + ++filename; + } + else + { + char *newp; + dirlen = filename - pattern; +#if defined __MSDOS__ || defined WINDOWS32 + if (*filename == ':' + || (filename > pattern + 1 && filename[-1] == ':')) + { + char *drive_spec; + + ++dirlen; + drive_spec = (char *) __alloca (dirlen + 1); +#ifdef HAVE_MEMPCPY + *((char *) mempcpy (drive_spec, pattern, dirlen)) = '\0'; +#else + memcpy (drive_spec, pattern, dirlen); + drive_spec[dirlen] = '\0'; +#endif + /* For now, disallow wildcards in the drive spec, to + prevent infinite recursion in glob. */ + if (__glob_pattern_p (drive_spec, !(flags & GLOB_NOESCAPE))) + return GLOB_NOMATCH; + /* If this is "d:pattern", we need to copy `:' to DIRNAME + as well. If it's "d:/pattern", don't remove the slash + from "d:/", since "d:" and "d:/" are not the same.*/ + } +#endif + newp = (char *) __alloca (dirlen + 1); +#ifdef HAVE_MEMPCPY + *((char *) mempcpy (newp, pattern, dirlen)) = '\0'; +#else + memcpy (newp, pattern, dirlen); + newp[dirlen] = '\0'; +#endif + dirname = newp; + ++filename; + + if (filename[0] == '\0' +#if defined __MSDOS__ || defined WINDOWS32 + && dirname[dirlen - 1] != ':' + && (dirlen < 3 || dirname[dirlen - 2] != ':' + || dirname[dirlen - 1] != '/') +#endif + && dirlen > 1) + /* "pattern/". Expand "pattern", appending slashes. */ + { + int val = glob (dirname, flags | GLOB_MARK, errfunc, pglob); + if (val == 0) + pglob->gl_flags = ((pglob->gl_flags & ~GLOB_MARK) + | (flags & GLOB_MARK)); + return val; + } + } + + if (!(flags & GLOB_APPEND)) + { + pglob->gl_pathc = 0; + if (!(flags & GLOB_DOOFFS)) + pglob->gl_pathv = NULL; + else + { + size_t i; + pglob->gl_pathv = (char **) malloc ((pglob->gl_offs + 1) + * sizeof (char *)); + if (pglob->gl_pathv == NULL) + return GLOB_NOSPACE; + + for (i = 0; i <= pglob->gl_offs; ++i) + pglob->gl_pathv[i] = NULL; + } + } + + oldcount = pglob->gl_pathc + pglob->gl_offs; + +#ifndef VMS + if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && dirname[0] == '~') + { + if (dirname[1] == '\0' || dirname[1] == '/') + { + /* Look up home directory. */ + const char *home_dir = getenv ("HOME"); +# ifdef _AMIGA + if (home_dir == NULL || home_dir[0] == '\0') + home_dir = "SYS:"; +# else +# ifdef WINDOWS32 + if (home_dir == NULL || home_dir[0] == '\0') + home_dir = "c:/users/default"; /* poor default */ +# else + if (home_dir == NULL || home_dir[0] == '\0') + { + int success; + char *name; +# if defined HAVE_GETLOGIN_R || defined _LIBC + size_t buflen = sysconf (_SC_LOGIN_NAME_MAX) + 1; + + if (buflen == 0) + /* `sysconf' does not support _SC_LOGIN_NAME_MAX. Try + a moderate value. */ + buflen = 20; + name = (char *) __alloca (buflen); + + success = getlogin_r (name, buflen) == 0; +# else + success = (name = getlogin ()) != NULL; +# endif + if (success) + { + struct passwd *p; +# if defined HAVE_GETPWNAM_R || defined _LIBC + long int pwbuflen = sysconf (_SC_GETPW_R_SIZE_MAX); + char *pwtmpbuf; + struct passwd pwbuf; + int save = errno; + +# ifndef _LIBC + if (pwbuflen == -1) + /* `sysconf' does not support _SC_GETPW_R_SIZE_MAX. + Try a moderate value. */ + pwbuflen = 1024; +# endif + pwtmpbuf = (char *) __alloca (pwbuflen); + + while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p) + != 0) + { + if (errno != ERANGE) + { + p = NULL; + break; + } +# ifdef _LIBC + pwtmpbuf = extend_alloca (pwtmpbuf, pwbuflen, + 2 * pwbuflen); +# else + pwbuflen *= 2; + pwtmpbuf = (char *) __alloca (pwbuflen); +# endif + __set_errno (save); + } +# else + p = getpwnam (name); +# endif + if (p != NULL) + home_dir = p->pw_dir; + } + } + if (home_dir == NULL || home_dir[0] == '\0') + { + if (flags & GLOB_TILDE_CHECK) + return GLOB_NOMATCH; + else + home_dir = "~"; /* No luck. */ + } +# endif /* WINDOWS32 */ +# endif + /* Now construct the full directory. */ + if (dirname[1] == '\0') + dirname = home_dir; + else + { + char *newp; + size_t home_len = strlen (home_dir); + newp = (char *) __alloca (home_len + dirlen); +# ifdef HAVE_MEMPCPY + mempcpy (mempcpy (newp, home_dir, home_len), + &dirname[1], dirlen); +# else + memcpy (newp, home_dir, home_len); + memcpy (&newp[home_len], &dirname[1], dirlen); +# endif + dirname = newp; + } + } +# if !defined _AMIGA && !defined WINDOWS32 + else + { + char *end_name = strchr (dirname, '/'); + const char *user_name; + const char *home_dir; + + if (end_name == NULL) + user_name = dirname + 1; + else + { + char *newp; + newp = (char *) __alloca (end_name - dirname); +# ifdef HAVE_MEMPCPY + *((char *) mempcpy (newp, dirname + 1, end_name - dirname)) + = '\0'; +# else + memcpy (newp, dirname + 1, end_name - dirname); + newp[end_name - dirname - 1] = '\0'; +# endif + user_name = newp; + } + + /* Look up specific user's home directory. */ + { + struct passwd *p; +# if defined HAVE_GETPWNAM_R || defined _LIBC + long int buflen = sysconf (_SC_GETPW_R_SIZE_MAX); + char *pwtmpbuf; + struct passwd pwbuf; + int save = errno; + +# ifndef _LIBC + if (buflen == -1) + /* `sysconf' does not support _SC_GETPW_R_SIZE_MAX. Try a + moderate value. */ + buflen = 1024; +# endif + pwtmpbuf = (char *) __alloca (buflen); + + while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0) + { + if (errno != ERANGE) + { + p = NULL; + break; + } +# ifdef _LIBC + pwtmpbuf = extend_alloca (pwtmpbuf, buflen, 2 * buflen); +# else + buflen *= 2; + pwtmpbuf = __alloca (buflen); +# endif + __set_errno (save); + } +# else + p = getpwnam (user_name); +# endif + if (p != NULL) + home_dir = p->pw_dir; + else + home_dir = NULL; + } + /* If we found a home directory use this. */ + if (home_dir != NULL) + { + char *newp; + size_t home_len = strlen (home_dir); + size_t rest_len = end_name == NULL ? 0 : strlen (end_name); + newp = (char *) __alloca (home_len + rest_len + 1); +# ifdef HAVE_MEMPCPY + *((char *) mempcpy (mempcpy (newp, home_dir, home_len), + end_name, rest_len)) = '\0'; +# else + memcpy (newp, home_dir, home_len); + memcpy (&newp[home_len], end_name, rest_len); + newp[home_len + rest_len] = '\0'; +# endif + dirname = newp; + } + else + if (flags & GLOB_TILDE_CHECK) + /* We have to regard it as an error if we cannot find the + home directory. */ + return GLOB_NOMATCH; + } +# endif /* Not Amiga && not WINDOWS32. */ + } +#endif /* Not VMS. */ + + /* Now test whether we looked for "~" or "~NAME". In this case we + can give the answer now. */ + if (filename == NULL) + { + struct stat st; +#ifdef HAVE_STAT64 + struct stat64 st64; +#endif + + /* Return the directory if we don't check for error or if it exists. */ + if ((flags & GLOB_NOCHECK) + || (((flags & GLOB_ALTDIRFUNC) + ? ((*pglob->gl_stat) (dirname, &st) == 0 + && S_ISDIR (st.st_mode)) + : (__stat64 (dirname, &st64) == 0 && S_ISDIR (st64.st_mode))))) + { + int newcount = pglob->gl_pathc + pglob->gl_offs; + char **new_gl_pathv; + + new_gl_pathv + = (char **) realloc (pglob->gl_pathv, + (newcount + 1 + 1) * sizeof (char *)); + if (new_gl_pathv == NULL) + { + nospace: + free (pglob->gl_pathv); + pglob->gl_pathv = NULL; + pglob->gl_pathc = 0; + return GLOB_NOSPACE; + } + pglob->gl_pathv = new_gl_pathv; + +#if defined HAVE_STRDUP || defined _LIBC + pglob->gl_pathv[newcount] = strdup (dirname); +#else + { + size_t len = strlen (dirname) + 1; + char *dircopy = (char *) malloc (len); + if (dircopy != NULL) + pglob->gl_pathv[newcount] = memcpy (dircopy, dirname, len); + } +#endif + if (pglob->gl_pathv[newcount] == NULL) + goto nospace; + pglob->gl_pathv[++newcount] = NULL; + ++pglob->gl_pathc; + pglob->gl_flags = flags; + + return 0; + } + + /* Not found. */ + return GLOB_NOMATCH; + } + + if (__glob_pattern_p (dirname, !(flags & GLOB_NOESCAPE))) + { + /* The directory name contains metacharacters, so we + have to glob for the directory, and then glob for + the pattern in each directory found. */ + glob_t dirs; + size_t i; + + if ((flags & GLOB_ALTDIRFUNC) != 0) + { + /* Use the alternative access functions also in the recursive + call. */ + dirs.gl_opendir = pglob->gl_opendir; + dirs.gl_readdir = pglob->gl_readdir; + dirs.gl_closedir = pglob->gl_closedir; + dirs.gl_stat = pglob->gl_stat; + dirs.gl_lstat = pglob->gl_lstat; + } + + status = glob (dirname, + ((flags & (GLOB_ERR | GLOB_NOCHECK | GLOB_NOESCAPE + | GLOB_ALTDIRFUNC)) + | GLOB_NOSORT | GLOB_ONLYDIR), + errfunc, &dirs); + if (status != 0) + return status; + + /* We have successfully globbed the preceding directory name. + For each name we found, call glob_in_dir on it and FILENAME, + appending the results to PGLOB. */ + for (i = 0; i < dirs.gl_pathc; ++i) + { + int old_pathc; + +#ifdef SHELL + { + /* Make globbing interruptible in the bash shell. */ + extern int interrupt_state; + + if (interrupt_state) + { + globfree (&dirs); + return GLOB_ABORTED; + } + } +#endif /* SHELL. */ + + old_pathc = pglob->gl_pathc; + status = glob_in_dir (filename, dirs.gl_pathv[i], + ((flags | GLOB_APPEND) + & ~(GLOB_NOCHECK | GLOB_NOMAGIC)), + errfunc, pglob); + if (status == GLOB_NOMATCH) + /* No matches in this directory. Try the next. */ + continue; + + if (status != 0) + { + globfree (&dirs); + globfree (pglob); + pglob->gl_pathc = 0; + return status; + } + + /* Stick the directory on the front of each name. */ + if (prefix_array (dirs.gl_pathv[i], + &pglob->gl_pathv[old_pathc + pglob->gl_offs], + pglob->gl_pathc - old_pathc)) + { + globfree (&dirs); + globfree (pglob); + pglob->gl_pathc = 0; + return GLOB_NOSPACE; + } + } + + flags |= GLOB_MAGCHAR; + + /* We have ignored the GLOB_NOCHECK flag in the `glob_in_dir' calls. + But if we have not found any matching entry and the GLOB_NOCHECK + flag was set we must return the input pattern itself. */ + if (pglob->gl_pathc + pglob->gl_offs == oldcount) + { + /* No matches. */ + if (flags & GLOB_NOCHECK) + { + int newcount = pglob->gl_pathc + pglob->gl_offs; + char **new_gl_pathv; + + new_gl_pathv = (char **) realloc (pglob->gl_pathv, + (newcount + 2) + * sizeof (char *)); + if (new_gl_pathv == NULL) + { + globfree (&dirs); + return GLOB_NOSPACE; + } + pglob->gl_pathv = new_gl_pathv; + + pglob->gl_pathv[newcount] = __strdup (pattern); + if (pglob->gl_pathv[newcount] == NULL) + { + globfree (&dirs); + globfree (pglob); + pglob->gl_pathc = 0; + return GLOB_NOSPACE; + } + + ++pglob->gl_pathc; + ++newcount; + + pglob->gl_pathv[newcount] = NULL; + pglob->gl_flags = flags; + } + else + { + globfree (&dirs); + return GLOB_NOMATCH; + } + } + + globfree (&dirs); + } + else + { + int old_pathc = pglob->gl_pathc; + + status = glob_in_dir (filename, dirname, flags, errfunc, pglob); + if (status != 0) + return status; + + if (dirlen > 0) + { + /* Stick the directory on the front of each name. */ + if (prefix_array (dirname, + &pglob->gl_pathv[old_pathc + pglob->gl_offs], + pglob->gl_pathc - old_pathc)) + { + globfree (pglob); + pglob->gl_pathc = 0; + return GLOB_NOSPACE; + } + } + } + + if (flags & GLOB_MARK) + { + /* Append slashes to directory names. */ + size_t i; + struct stat st; +#ifdef HAVE_STAT64 + struct stat64 st64; +#endif + + for (i = oldcount; i < pglob->gl_pathc + pglob->gl_offs; ++i) + if (((flags & GLOB_ALTDIRFUNC) + ? ((*pglob->gl_stat) (pglob->gl_pathv[i], &st) == 0 + && S_ISDIR (st.st_mode)) + : (__stat64 (pglob->gl_pathv[i], &st64) == 0 + && S_ISDIR (st64.st_mode)))) + { + size_t len = strlen (pglob->gl_pathv[i]) + 2; + char *new = realloc (pglob->gl_pathv[i], len); + if (new == NULL) + { + globfree (pglob); + pglob->gl_pathc = 0; + return GLOB_NOSPACE; + } + strcpy (&new[len - 2], "/"); + pglob->gl_pathv[i] = new; + } + } + + if (!(flags & GLOB_NOSORT)) + { + /* Sort the vector. */ + qsort ((__ptr_t) &pglob->gl_pathv[oldcount], + pglob->gl_pathc + pglob->gl_offs - oldcount, + sizeof (char *), collated_compare); + } + + return 0; +} +#if defined _LIBC && !defined glob +libc_hidden_def (glob) +#endif + + +#if !defined _LIBC || !defined GLOB_ONLY_P + +/* Free storage allocated in PGLOB by a previous `glob' call. */ +void +globfree (pglob) + register glob_t *pglob; +{ + if (pglob->gl_pathv != NULL) + { + size_t i; + for (i = 0; i < pglob->gl_pathc; ++i) + if (pglob->gl_pathv[pglob->gl_offs + i] != NULL) + free ((__ptr_t) pglob->gl_pathv[pglob->gl_offs + i]); + free ((__ptr_t) pglob->gl_pathv); + pglob->gl_pathv = NULL; + } +} +#if defined _LIBC && !defined globfree +libc_hidden_def (globfree) +#endif + + +/* Do a collated comparison of A and B. */ +static int +collated_compare (a, b) + const __ptr_t a; + const __ptr_t b; +{ + const char *const s1 = *(const char *const * const) a; + const char *const s2 = *(const char *const * const) b; + + if (s1 == s2) + return 0; + if (s1 == NULL) + return 1; + if (s2 == NULL) + return -1; + return strcoll (s1, s2); +} + + +/* Prepend DIRNAME to each of N members of ARRAY, replacing ARRAY's + elements in place. Return nonzero if out of memory, zero if successful. + A slash is inserted between DIRNAME and each elt of ARRAY, + unless DIRNAME is just "/". Each old element of ARRAY is freed. */ +static int +prefix_array (dirname, array, n) + const char *dirname; + char **array; + size_t n; +{ + register size_t i; + size_t dirlen = strlen (dirname); +#if defined __MSDOS__ || defined WINDOWS32 + int sep_char = '/'; +# define DIRSEP_CHAR sep_char +#else +# define DIRSEP_CHAR '/' +#endif + + if (dirlen == 1 && dirname[0] == '/') + /* DIRNAME is just "/", so normal prepending would get us "//foo". + We want "/foo" instead, so don't prepend any chars from DIRNAME. */ + dirlen = 0; +#if defined __MSDOS__ || defined WINDOWS32 + else if (dirlen > 1) + { + if (dirname[dirlen - 1] == '/' && dirname[dirlen - 2] == ':') + /* DIRNAME is "d:/". Don't prepend the slash from DIRNAME. */ + --dirlen; + else if (dirname[dirlen - 1] == ':') + { + /* DIRNAME is "d:". Use `:' instead of `/'. */ + --dirlen; + sep_char = ':'; + } + } +#endif + + for (i = 0; i < n; ++i) + { + size_t eltlen = strlen (array[i]) + 1; + char *new = (char *) malloc (dirlen + 1 + eltlen); + if (new == NULL) + { + while (i > 0) + free ((__ptr_t) array[--i]); + return 1; + } + +#ifdef HAVE_MEMPCPY + { + char *endp = (char *) mempcpy (new, dirname, dirlen); + *endp++ = DIRSEP_CHAR; + mempcpy (endp, array[i], eltlen); + } +#else + memcpy (new, dirname, dirlen); + new[dirlen] = DIRSEP_CHAR; + memcpy (&new[dirlen + 1], array[i], eltlen); +#endif + free ((__ptr_t) array[i]); + array[i] = new; + } + + return 0; +} + + +/* We must not compile this function twice. */ +#if !defined _LIBC || !defined NO_GLOB_PATTERN_P +/* Return nonzero if PATTERN contains any metacharacters. + Metacharacters can be quoted with backslashes if QUOTE is nonzero. */ +int +__glob_pattern_p (pattern, quote) + const char *pattern; + int quote; +{ + register const char *p; + int open = 0; + + for (p = pattern; *p != '\0'; ++p) + switch (*p) + { + case '?': + case '*': + return 1; + + case '\\': + if (quote && p[1] != '\0') + ++p; + break; + + case '[': + open = 1; + break; + + case ']': + if (open) + return 1; + break; + } + + return 0; +} +# ifdef _LIBC +weak_alias (__glob_pattern_p, glob_pattern_p) +# endif +#endif + +#endif /* !GLOB_ONLY_P */ + + +/* We put this in a separate function mainly to allow the memory + allocated with alloca to be recycled. */ +#if !defined _LIBC || !defined GLOB_ONLY_P +static int +link_exists_p (const char *dir, size_t dirlen, const char *fname, + glob_t *pglob, int flags) +{ + size_t fnamelen = strlen (fname); + char *fullname = (char *) __alloca (dirlen + 1 + fnamelen + 1); + struct stat st; + struct stat64 st64; + +# ifdef HAVE_MEMPCPY + mempcpy (mempcpy (mempcpy (fullname, dir, dirlen), "/", 1), + fname, fnamelen + 1); +# else + memcpy (fullname, dir, dirlen); + fullname[dirlen] = '/'; + memcpy (&fullname[dirlen + 1], fname, fnamelen + 1); +# endif + + return (((flags & GLOB_ALTDIRFUNC) + ? (*pglob->gl_stat) (fullname, &st) + : __stat64 (fullname, &st64)) == 0); +} +#endif + + +/* Like `glob', but PATTERN is a final pathname component, + and matches are searched for in DIRECTORY. + The GLOB_NOSORT bit in FLAGS is ignored. No sorting is ever done. + The GLOB_APPEND flag is assumed to be set (always appends). */ +static int +glob_in_dir (pattern, directory, flags, errfunc, pglob) + const char *pattern; + const char *directory; + int flags; + int (*errfunc) (const char *, int); + glob_t *pglob; +{ + size_t dirlen = strlen (directory); + __ptr_t stream = NULL; + struct globlink + { + struct globlink *next; + char *name; + }; + struct globlink *names = NULL; + size_t nfound; + int meta; + int save; + + meta = __glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE)); + if (meta == 0 && (flags & (GLOB_NOCHECK|GLOB_NOMAGIC))) + { + /* We need not do any tests. The PATTERN contains no meta + 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)) + { + /* Since we use the normal file functions we can also use stat() + to verify the file is there. */ + struct stat st; +# ifdef HAVE_STAT64 + struct stat64 st64; +# endif + size_t patlen = strlen (pattern); + char *fullname = (char *) __alloca (dirlen + 1 + patlen + 1); + +# ifdef HAVE_MEMPCPY + mempcpy (mempcpy (mempcpy (fullname, directory, dirlen), + "/", 1), + pattern, patlen + 1); +# else + memcpy (fullname, directory, dirlen); + fullname[dirlen] = '/'; + memcpy (&fullname[dirlen + 1], pattern, patlen + 1); +# endif + if (((flags & GLOB_ALTDIRFUNC) + ? (*pglob->gl_stat) (fullname, &st) + : __stat64 (fullname, &st64)) == 0) + /* 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 + { + if (pattern[0] == '\0') + { + /* 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) + goto memory_error; + names->name[0] = '\0'; + names->next = NULL; + nfound = 1; + meta = 0; + } + else + { + stream = ((flags & GLOB_ALTDIRFUNC) + ? (*pglob->gl_opendir) (directory) + : (__ptr_t) opendir (directory)); + if (stream == NULL) + { + if (errno != ENOTDIR + && ((errfunc != NULL && (*errfunc) (directory, errno)) + || (flags & GLOB_ERR))) + return GLOB_ABORTED; + nfound = 0; + meta = 0; + } + else + { + int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0) + | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0) +#if defined _AMIGA || defined VMS + | FNM_CASEFOLD +#endif + ); + nfound = 0; + flags |= GLOB_MAGCHAR; + + while (1) + { + const char *name; + size_t len; +#if defined HAVE_DIRENT64 && !defined COMPILE_GLOB64 + struct dirent64 *d; + union + { + struct dirent64 d64; + char room [offsetof (struct dirent64, d_name[0]) + + NAME_MAX + 1]; + } + d64buf; + + if (flags & GLOB_ALTDIRFUNC) + { + struct dirent *d32 = (*pglob->gl_readdir) (stream); + if (d32 != NULL) + { + CONVERT_DIRENT_DIRENT64 (&d64buf.d64, d32); + d = &d64buf.d64; + } + else + d = NULL; + } + else + d = __readdir64 ((DIR *) stream); +#else + struct dirent *d = ((flags & GLOB_ALTDIRFUNC) + ? ((struct dirent *) + (*pglob->gl_readdir) (stream)) + : __readdir ((DIR *) stream)); +#endif + if (d == NULL) + break; + if (! REAL_DIR_ENTRY (d)) + continue; + +#ifdef HAVE_D_TYPE + /* If we shall match only directories use the information + provided by the dirent call if possible. */ + if ((flags & GLOB_ONLYDIR) + && d->d_type != DT_UNKNOWN + && d->d_type != DT_DIR + && d->d_type != DT_LNK) + continue; +#endif + + name = d->d_name; + + if (fnmatch (pattern, name, fnm_flags) == 0) + { + /* If the file we found is a symlink we have to + make sure the target file exists. */ + if ( +#ifdef HAVE_D_TYPE + (d->d_type != DT_UNKNOWN && d->d_type != DT_LNK) || +#endif + link_exists_p (directory, dirlen, name, pglob, + flags)) + { + struct globlink *new = (struct globlink *) + __alloca (sizeof (struct globlink)); + len = NAMLEN (d); + new->name = (char *) malloc (len + 1); + if (new->name == NULL) + goto memory_error; +#ifdef HAVE_MEMPCPY + *((char *) mempcpy ((__ptr_t) new->name, name, len)) + = '\0'; +#else + memcpy ((__ptr_t) new->name, name, len); + new->name[len] = '\0'; +#endif + new->next = names; + names = new; + ++nfound; + } + } + } + } + } + } + + if (nfound == 0 && (flags & GLOB_NOCHECK)) + { + 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) + goto memory_error; +#ifdef HAVE_MEMPCPY + *((char *) mempcpy (names->name, pattern, len)) = '\0'; +#else + memcpy (names->name, pattern, len); + names->name[len] = '\0'; +#endif + } + + if (nfound != 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; + + 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_flags = flags; + } + + save = errno; + if (stream != NULL) + { + if (flags & GLOB_ALTDIRFUNC) + (*pglob->gl_closedir) (stream); + else + closedir ((DIR *) stream); + } + __set_errno (save); + + return nfound == 0 ? GLOB_NOMATCH : 0; + + memory_error: + { + int save = errno; + if (flags & GLOB_ALTDIRFUNC) + (*pglob->gl_closedir) (stream); + else + closedir ((DIR *) stream); + __set_errno (save); + } + while (names != NULL) + { + if (names->name != NULL) + free ((__ptr_t) names->name); + names = names->next; + } + return GLOB_NOSPACE; +} + +#endif /* Not ELIDE_CODE. */ |