diff options
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/misc/glob/glob.c | 989 | ||||
| -rw-r--r-- | libc/misc/glob/glob64.c | 10 |
2 files changed, 771 insertions, 228 deletions
diff --git a/libc/misc/glob/glob.c b/libc/misc/glob/glob.c index f1875e8e3..d36d048bf 100644 --- a/libc/misc/glob/glob.c +++ b/libc/misc/glob/glob.c @@ -26,6 +26,7 @@ Cambridge, MA 02139, USA. */ #include <malloc.h> #include <fnmatch.h> #include <glob.h> +#include <pwd.h> libc_hidden_proto(memcpy) libc_hidden_proto(strcat) @@ -38,66 +39,129 @@ libc_hidden_proto(closedir) libc_hidden_proto(fnmatch) libc_hidden_proto(qsort) libc_hidden_proto(lstat) +libc_hidden_proto(getpwnam_r) + +/* When used in the GNU libc the symbol _DIRENT_HAVE_D_TYPE is available + if the `d_type' member for `struct dirent' is available. + HAVE_STRUCT_DIRENT_D_TYPE plays the same role in GNULIB. */ +#if defined _DIRENT_HAVE_D_TYPE +/* True if the directory entry D must be of type T. */ +# define DIRENT_MUST_BE(d, t) ((d)->d_type == (t)) + +/* True if the directory entry D might be a symbolic link. */ +# define DIRENT_MIGHT_BE_SYMLINK(d) \ + ((d)->d_type == DT_UNKNOWN || (d)->d_type == DT_LNK) + +/* True if the directory entry D might be a directory. */ +# define DIRENT_MIGHT_BE_DIR(d) \ + ((d)->d_type == DT_DIR || DIRENT_MIGHT_BE_SYMLINK (d)) + +#else /* !HAVE_D_TYPE */ +# define DIRENT_MUST_BE(d, t) false +# define DIRENT_MIGHT_BE_SYMLINK(d) true +# define DIRENT_MIGHT_BE_DIR(d) true +#endif /* HAVE_D_TYPE */ + + +# define NAMLEN(dirent) strlen((dirent)->d_name) +#ifdef _D_NAMLEN +# undef NAMLEN +# define NAMLEN(d) _D_NAMLEN(d) +#endif + +# if defined _DIRENT_HAVE_D_NAMLEN +# define CONVERT_D_NAMLEN(d64, d32) (d64)->d_namlen = (d32)->d_namlen; +# else +# define CONVERT_D_NAMLEN(d64, d32) +# endif + +# define CONVERT_D_INO(d64, d32) (d64)->d_ino = (d32)->d_ino; + +# ifdef _DIRENT_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) extern __ptr_t (*__glob_opendir_hook) (const char *directory) attribute_hidden; extern void (*__glob_closedir_hook) (__ptr_t stream) attribute_hidden; extern const char *(*__glob_readdir_hook) (__ptr_t stream) attribute_hidden; -extern int __collated_compare (const __ptr_t a, const __ptr_t b) attribute_hidden; -extern int __prefix_array (const char *dirname, char **array, size_t n, int add_slash) attribute_hidden; +extern int collated_compare (const __ptr_t a, const __ptr_t b); +extern int prefix_array (const char *dirname, char **array, size_t n); +extern const char * next_brace_sub (const char *cp, int flags); + +static int link_exists_p (const char *dir, size_t dirlen, const char *fname, + glob_t *pglob, int flags); +static int glob_in_dir (const char *pattern, const char *directory, int flags, + int (*errfunc) (const char *, int), + glob_t *pglob); libc_hidden_proto(glob_pattern_p) -#ifdef __GLOB64 +libc_hidden_proto(collated_compare) +libc_hidden_proto(prefix_array) +libc_hidden_proto(next_brace_sub) +#ifdef COMPILE_GLOB64 libc_hidden_proto(glob64) libc_hidden_proto(globfree64) libc_hidden_proto(readdir64) -#define __readdir readdir64 +# define struct_stat64 struct stat64 +# define __stat64(fname, buf) stat64 (fname, buf) #else libc_hidden_proto(glob) libc_hidden_proto(globfree) #define __readdir readdir +#define __readdir64 readdir64 +//#define __stat64(fname, buf) stat64 (fname, buf) libc_hidden_proto(readdir) +# define struct_stat64 struct stat +# define __stat64(fname, buf) stat (fname, buf) /* Return nonzero if PATTERN contains any metacharacters. Metacharacters can be quoted with backslashes if QUOTE is nonzero. */ int glob_pattern_p(const char *pattern, int quote) { - const char *p; - int open = 0; + register const char *p; + int open = 0; - for (p = pattern; *p != '\0'; ++p) - switch (*p) - { - case '?': - case '*': - return 1; + for (p = pattern; *p != '\0'; ++p) + switch (*p) + { + case '?': + case '*': + return 1; - case '\\': - if (quote && p[1] != '\0') - ++p; - break; + case '\\': + if (quote && p[1] != '\0') + ++p; + break; - case '[': - open = 1; - break; + case '[': + open = 1; + break; - case ']': - if (open) - return 1; - break; - } + case ']': + if (open) + return 1; + break; + } - return 0; + return 0; } libc_hidden_def(glob_pattern_p) /* Do a collated comparison of A and B. */ -int -__collated_compare (const __ptr_t a, const __ptr_t b) +int collated_compare (const void *a, const void *b) { - const char *const s1 = *(const char *const *) a; - const char *const s2 = *(const char *const *) b; + const char *const s1 = *(const char *const * const) a; + const char *const s2 = *(const char *const * const) b; if (s1 == s2) return 0; @@ -108,18 +172,15 @@ __collated_compare (const __ptr_t a, const __ptr_t b) 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. - If ADD_SLASH is non-zero, allocate one character more than - necessary, so that a slash can be appended later. */ -int -__prefix_array (const char *dirname, char **array, size_t n, int add_slash) + unless DIRNAME is just "/". Each old element of ARRAY is freed. */ +int prefix_array (const char *dirname, char **array, size_t n) { register size_t i; size_t dirlen = strlen (dirname); +# define DIRSEP_CHAR '/' if (dirlen == 1 && dirname[0] == '/') /* DIRNAME is just "/", so normal prepending would get us "//foo". @@ -129,105 +190,224 @@ __prefix_array (const char *dirname, char **array, size_t n, int add_slash) for (i = 0; i < n; ++i) { size_t eltlen = strlen (array[i]) + 1; - char *new = (char *) malloc (dirlen + 1 + eltlen + (add_slash ? 1 : 0)); + char *new = (char *) malloc (dirlen + 1 + eltlen); if (new == NULL) { while (i > 0) - free ((__ptr_t) array[--i]); + free (array[--i]); return 1; } - memcpy (new, dirname, dirlen); - new[dirlen] = '/'; - memcpy (&new[dirlen + 1], array[i], eltlen); - free ((__ptr_t) array[i]); + { + char *endp = mempcpy (new, dirname, dirlen); + *endp++ = DIRSEP_CHAR; + mempcpy (endp, array[i], eltlen); + } + free (array[i]); array[i] = new; } return 0; } + +/* Find the end of the sub-pattern in a brace expression. */ +const char * +next_brace_sub (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 +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; + + mempcpy (mempcpy (mempcpy (fullname, dir, dirlen), "/", 1), + fname, fnamelen + 1); + + return (((flags & GLOB_ALTDIRFUNC) + ? (*pglob->gl_stat) (fullname, &st) + : __stat64 (fullname, &st64)) == 0); +} /* 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 (const char *pattern, const char *directory, int flags, int (*errfunc) (const char *, int), glob_t *pglob) +static int glob_in_dir (const char *pattern, const char *directory, int flags, + int (*errfunc) (const char *, int), + glob_t *pglob) { - __ptr_t stream; - + size_t dirlen = strlen (directory); + void *stream = NULL; struct globlink { struct globlink *next; char *name; }; struct globlink *names = NULL; - size_t nfound = 0; + size_t nfound; int meta; + int save; - stream = (__glob_opendir_hook ? (*__glob_opendir_hook) (directory) - : (__ptr_t) opendir (directory)); - if (stream == NULL) + meta = glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE)); + if (meta == 0 && (flags & (GLOB_NOCHECK|GLOB_NOMAGIC))) { - if ((errfunc != NULL && (*errfunc) (directory, errno)) || - (flags & GLOB_ERR)) - return GLOB_ABORTED; + /* 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; + struct_stat64 st64; + size_t patlen = strlen (pattern); + char *fullname = (char *) alloca (dirlen + 1 + patlen + 1); - meta = glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE)); - - if (meta) - flags |= GLOB_MAGCHAR; + mempcpy (mempcpy (mempcpy (fullname, directory, dirlen), + "/", 1), + pattern, patlen + 1); + 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; - while (1) + nfound = 0; + } + else { - const char *name; - size_t len; - - if (__glob_readdir_hook) + if (pattern[0] == '\0') { - name = (*__glob_readdir_hook) (stream); - if (name == NULL) - break; - len = 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 { - struct dirent *d = __readdir ((DIR *) stream); - if (d == NULL) - break; - if (! (d->d_ino != 0)) - continue; - name = d->d_name; -#ifdef _DIRENT_HAVE_D_NAMLEN - len = d->d_namlen; + stream = ((flags & GLOB_ALTDIRFUNC) + ? (*pglob->gl_opendir) (directory) + : 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) + ); + nfound = 0; + flags |= GLOB_MAGCHAR; + + while (1) + { + const char *name; + size_t len; +#if !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 (stream); #else - len = 0; + struct dirent *d = ((flags & GLOB_ALTDIRFUNC) + ? ((struct dirent *) + (*pglob->gl_readdir) (stream)) + : __readdir (stream)); #endif - } - - if ((!meta && strcmp (pattern, name) == 0) - || fnmatch (pattern, name, - (!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0) | - ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)) == 0) - { - struct globlink *new - = (struct globlink *) alloca (sizeof (struct globlink)); - if (len == 0) - len = strlen (name); - new->name - = (char *) malloc (len + ((flags & GLOB_MARK) ? 1 : 0) + 1); - if (new->name == NULL) - goto memory_error; - memcpy ((__ptr_t) new->name, name, len); - new->name[len] = '\0'; - new->next = names; - names = new; - ++nfound; - if (!meta) - break; + if (d == NULL) + break; +# define REAL_DIR_ENTRY(dp) (dp->d_ino != 0) + if (! REAL_DIR_ENTRY (d)) + continue; + + /* If we shall match only directories use the information + provided by the dirent call if possible. */ + if ((flags & GLOB_ONLYDIR) && !DIRENT_MIGHT_BE_DIR (d)) + continue; + + 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 (!DIRENT_MIGHT_BE_SYMLINK (d) + || 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; + *((char *) mempcpy (new->name, name, len)) = '\0'; + new->next = names; + names = new; + ++nfound; + } + } + } + } } } @@ -237,60 +417,62 @@ glob_in_dir (const char *pattern, const char *directory, int flags, int (*errfun nfound = 1; names = (struct globlink *) alloca (sizeof (struct globlink)); names->next = NULL; - names->name = (char *) malloc (len + (flags & GLOB_MARK ? 1 : 0) + 1); + names->name = (char *) malloc (len + 1); if (names->name == NULL) goto memory_error; - memcpy (names->name, pattern, len); - names->name[len] = '\0'; + *((char *) mempcpy (names->name, pattern, len)) = '\0'; } - pglob->gl_pathv - = (char **) realloc (pglob->gl_pathv, - (pglob->gl_pathc + - ((flags & GLOB_DOOFFS) ? pglob->gl_offs : 0) + - nfound + 1) * - sizeof (char *)); - if (pglob->gl_pathv == NULL) - goto memory_error; + if (nfound != 0) + { + char **new_gl_pathv; - if (flags & GLOB_DOOFFS) - while (pglob->gl_pathc < pglob->gl_offs) - pglob->gl_pathv[pglob->gl_pathc++] = NULL; + 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_pathc++] = names->name; - pglob->gl_pathv[pglob->gl_pathc] = NULL; + 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; + pglob->gl_flags = flags; + } + + save = errno; + if (stream != NULL) + { + if (flags & GLOB_ALTDIRFUNC) + (*pglob->gl_closedir) (stream); + else + closedir (stream); + } + __set_errno (save); - { - int save = errno; - if (__glob_closedir_hook) - (*__glob_closedir_hook) (stream); - else - (void) closedir ((DIR *) stream); - errno = save; - } return nfound == 0 ? GLOB_NOMATCH : 0; memory_error: { - int save = errno; - if (__glob_closedir_hook) - (*__glob_closedir_hook) (stream); + int save2 = errno; + if (flags & GLOB_ALTDIRFUNC) + (*pglob->gl_closedir) (stream); else - (void) closedir ((DIR *) stream); - errno = save; + closedir (stream); + __set_errno (save2); } while (names != NULL) { if (names->name != NULL) - free ((__ptr_t) names->name); + free (names->name); names = names->next; } return GLOB_NOSPACE; } + /* 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, @@ -307,57 +489,385 @@ glob (pattern, flags, errfunc, pglob) glob_t *pglob; { const char *filename; - char *dirname; + const char *dirname; size_t dirlen; int status; - int oldcount; + size_t oldcount; if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0) { - errno = EINVAL; + __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; + char onealt[strlen (pattern) - 1]; + + /* We know the prefix for all sub-patterns. */ + alt_start = mempcpy (onealt, pattern, begin - pattern); + + /* 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. */ + 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. */ + 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. */ + mempcpy (mempcpy (alt_start, p, next - p), rest, rest_len); + + result = glob (onealt, + ((flags & ~(GLOB_NOCHECK | GLOB_NOMAGIC)) + | GLOB_APPEND), errfunc, pglob); + + /* If we got an error, return it. */ + if (result && result != GLOB_NOMATCH) + { + 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); */ + } + + + 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 (filename == NULL) { - filename = pattern; - dirname = (char *) "."; - dirlen = 0; + /* 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; + dirname = "."; + dirlen = 0; + } } else if (filename == pattern) { /* "/pattern". */ - dirname = (char *) "/"; + dirname = "/"; dirlen = 1; ++filename; } else { + char *newp; dirlen = filename - pattern; - dirname = (char *) alloca (dirlen + 1); - memcpy (dirname, pattern, dirlen); - dirname[dirlen] = '\0'; + newp = (char *) alloca (dirlen + 1); + *((char *) mempcpy (newp, pattern, dirlen)) = '\0'; + dirname = newp; ++filename; - } - if (filename[0] == '\0' && 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 (filename[0] == '\0' + && 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; - pglob->gl_pathv = NULL; + 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; + + 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"); + if (home_dir == NULL || home_dir[0] == '\0') + { + int success; + char *name; +# define GET_LOGIN_NAME_MAX() sysconf (_SC_LOGIN_NAME_MAX) + size_t buflen = GET_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; + if (success) + { + struct passwd *p; +# define GETPW_R_SIZE_MAX() sysconf (_SC_GETPW_R_SIZE_MAX) + long int pwbuflen = GETPW_R_SIZE_MAX (); + char *pwtmpbuf; + struct passwd pwbuf; + int save = errno; + + pwtmpbuf = (char *) alloca (pwbuflen); + + while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p) + != 0) + { + if (errno != ERANGE) + { + p = NULL; + break; + } + pwtmpbuf = extend_alloca (pwtmpbuf, pwbuflen, + 2 * pwbuflen); + __set_errno (save); + } + 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. */ + } + /* 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); + mempcpy (mempcpy (newp, home_dir, home_len), + &dirname[1], dirlen); + dirname = newp; + } + } + 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); + *((char *) mempcpy (newp, dirname + 1, end_name - dirname)) + = '\0'; + user_name = newp; + } + + /* Look up specific user's home directory. */ + { + struct passwd *p; + long int buflen = GETPW_R_SIZE_MAX (); + char *pwtmpbuf; + struct passwd pwbuf; + int save = errno; + + pwtmpbuf = (char *) alloca (buflen); + + while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0) + { + if (errno != ERANGE) + { + p = NULL; + break; + } + pwtmpbuf = extend_alloca (pwtmpbuf, buflen, 2 * buflen); + __set_errno (save); + } + 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); + *((char *) mempcpy (mempcpy (newp, home_dir, home_len), + end_name, rest_len)) = '\0'; + 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; + } } - oldcount = pglob->gl_pathc; + /* Now test whether we looked for "~" or "~NAME". In this case we + can give the answer now. */ + if (filename == NULL) + { + struct stat st; + struct_stat64 st64; + + /* 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; + + pglob->gl_pathv[newcount] = strdup (dirname); + 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))) { @@ -365,11 +875,23 @@ glob (pattern, flags, errfunc, pglob) have to glob for the directory, and then glob for the pattern in each directory found. */ glob_t dirs; - register int i; + 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_NOSORT), + ((flags & (GLOB_ERR | GLOB_NOCHECK | GLOB_NOESCAPE + | GLOB_ALTDIRFUNC)) + | GLOB_NOSORT | GLOB_ONLYDIR), errfunc, &dirs); if (status != 0) return status; @@ -379,23 +901,12 @@ glob (pattern, flags, errfunc, pglob) appending the results to PGLOB. */ for (i = 0; i < dirs.gl_pathc; ++i) { -#ifdef SHELL - { - /* Make globbing interruptible in the bash shell. */ - extern int interrupt_state; - - if (interrupt_state) - { - globfree (&dirs); - globfree (&files); - return GLOB_ABEND; - } - } -#endif /* SHELL. */ + int old_pathc; - oldcount = pglob->gl_pathc; + old_pathc = pglob->gl_pathc; status = glob_in_dir (filename, dirs.gl_pathv[i], - (flags | GLOB_APPEND) & ~GLOB_NOCHECK, + ((flags | GLOB_APPEND) + & ~(GLOB_NOCHECK | GLOB_NOMAGIC)), errfunc, pglob); if (status == GLOB_NOMATCH) /* No matches in this directory. Try the next. */ @@ -405,63 +916,73 @@ glob (pattern, flags, errfunc, pglob) { 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[oldcount], - pglob->gl_pathc - oldcount, - flags & GLOB_MARK)) + 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; - if (pglob->gl_pathc == oldcount) - { - /* No matches. */ - if (flags & GLOB_NOCHECK) + /* 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) { - size_t len = strlen (pattern) + 1; - char *patcopy = (char *) malloc (len); - if (patcopy == NULL) - return GLOB_NOSPACE; - memcpy (patcopy, pattern, len); - - pglob->gl_pathv - = (char **) realloc (pglob->gl_pathv, - (pglob->gl_pathc + - ((flags & GLOB_DOOFFS) ? - pglob->gl_offs : 0) + - 1 + 1) * - sizeof (char *)); - if (pglob->gl_pathv == NULL) - { - free (patcopy); - return GLOB_NOSPACE; - } + /* No matches. */ + if (flags & GLOB_NOCHECK) + { + int newcount = pglob->gl_pathc + pglob->gl_offs; + char **new_gl_pathv; - if (flags & GLOB_DOOFFS) - while (pglob->gl_pathc < pglob->gl_offs) - pglob->gl_pathv[pglob->gl_pathc++] = NULL; + 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[pglob->gl_pathc++] = patcopy; - pglob->gl_pathv[pglob->gl_pathc] = NULL; - pglob->gl_flags = flags; - } - else - { - return GLOB_NOMATCH; + 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; @@ -469,12 +990,12 @@ glob (pattern, flags, errfunc, pglob) if (dirlen > 0) { /* Stick the directory on the front of each name. */ - if (__prefix_array (dirname, - &pglob->gl_pathv[oldcount], - pglob->gl_pathc - oldcount, - flags & GLOB_MARK)) + 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; } } @@ -482,25 +1003,42 @@ glob (pattern, flags, errfunc, pglob) if (flags & GLOB_MARK) { - /* Append slashes to directory names. glob_in_dir has already - allocated the extra character for us. */ - int i; + /* Append slashes to directory names. */ + size_t i; struct stat st; - for (i = oldcount; i < pglob->gl_pathc; ++i) - if (lstat (pglob->gl_pathv[i], &st) == 0 && - S_ISDIR (st.st_mode)) - strcat (pglob->gl_pathv[i], "/"); + struct_stat64 st64; + + 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 - oldcount, - sizeof (char *), (__compar_fn_t)__collated_compare); + { + /* Sort the vector. */ + qsort (&pglob->gl_pathv[oldcount], + pglob->gl_pathc + pglob->gl_offs - oldcount, + sizeof (char *), collated_compare); + } return 0; } -#ifdef __GLOB64 +#ifdef COMPILE_GLOB64 libc_hidden_def(glob64) #else libc_hidden_def(glob) @@ -514,14 +1052,15 @@ globfree (pglob) { if (pglob->gl_pathv != NULL) { - register int i = pglob->gl_flags & GLOB_DOOFFS? pglob->gl_offs : 0; - for (; i < pglob->gl_pathc; ++i) - if (pglob->gl_pathv[i] != NULL) - free ((__ptr_t) pglob->gl_pathv[i]); - free ((__ptr_t) pglob->gl_pathv); + size_t i; + for (i = 0; i < pglob->gl_pathc; ++i) + if (pglob->gl_pathv[pglob->gl_offs + i] != NULL) + free (pglob->gl_pathv[pglob->gl_offs + i]); + free (pglob->gl_pathv); + pglob->gl_pathv = NULL; } } -#ifdef __GLOB64 +#ifdef COMPILE_GLOB64 libc_hidden_def(globfree64) #else libc_hidden_def(globfree) diff --git a/libc/misc/glob/glob64.c b/libc/misc/glob/glob64.c index d84f874d5..bc2ba682f 100644 --- a/libc/misc/glob/glob64.c +++ b/libc/misc/glob/glob64.c @@ -11,6 +11,8 @@ #include <sys/stat.h> #define dirent dirent64 +#define __readdir(dirp) readdir64 (dirp) +#define __readdir64(dirp) readdir64 (dirp) #define glob_t glob64_t #define glob(pattern, flags, errfunc, pglob) \ @@ -19,8 +21,10 @@ #undef stat #define stat stat64 -#define lstat lstat64 +#undef __stat +#define __stat(file, buf) stat64(file, buf) + +#define COMPILE_GLOB64 1 -#define __GLOB64 1 - #include "glob.c" + |