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Diffstat (limited to 'lib/mlibc/options/posix/musl-generic-regex/glob.c')
-rw-r--r--lib/mlibc/options/posix/musl-generic-regex/glob.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/lib/mlibc/options/posix/musl-generic-regex/glob.c b/lib/mlibc/options/posix/musl-generic-regex/glob.c
deleted file mode 100644
index b57f2f3..0000000
--- a/lib/mlibc/options/posix/musl-generic-regex/glob.c
+++ /dev/null
@@ -1,311 +0,0 @@
-#define _BSD_SOURCE
-#include <glob.h>
-#include <fnmatch.h>
-#include <sys/stat.h>
-#include <dirent.h>
-#include <limits.h>
-#include <string.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <stddef.h>
-#include <unistd.h>
-#include <pwd.h>
-
-struct match
-{
- struct match *next;
- char name[];
-};
-
-static int append(struct match **tail, const char *name, size_t len, int mark)
-{
- struct match *new = malloc(sizeof(struct match) + len + 2);
- if (!new) return -1;
- (*tail)->next = new;
- new->next = NULL;
- memcpy(new->name, name, len+1);
- if (mark && len && name[len-1]!='/') {
- new->name[len] = '/';
- new->name[len+1] = 0;
- }
- *tail = new;
- return 0;
-}
-
-static int do_glob(char *buf, size_t pos, int type, char *pat, int flags, int (*errfunc)(const char *path, int err), struct match **tail)
-{
- /* If GLOB_MARK is unused, we don't care about type. */
- if (!type && !(flags & GLOB_MARK)) type = DT_REG;
-
- /* Special-case the remaining pattern being all slashes, in
- * which case we can use caller-passed type if it's a dir. */
- if (*pat && type!=DT_DIR) type = 0;
- while (pos+1 < PATH_MAX && *pat=='/') buf[pos++] = *pat++;
-
- /* Consume maximal [escaped-]literal prefix of pattern, copying
- * and un-escaping it to the running buffer as we go. */
- ptrdiff_t i=0, j=0;
- int in_bracket = 0, overflow = 0;
- for (; pat[i]!='*' && pat[i]!='?' && (!in_bracket || pat[i]!=']'); i++) {
- if (!pat[i]) {
- if (overflow) return 0;
- pat += i;
- pos += j;
- i = j = 0;
- break;
- } else if (pat[i] == '[') {
- in_bracket = 1;
- } else if (pat[i] == '\\' && !(flags & GLOB_NOESCAPE)) {
- /* Backslashes inside a bracket are (at least by
- * our interpretation) non-special, so if next
- * char is ']' we have a complete expression. */
- if (in_bracket && pat[i+1]==']') break;
- /* Unpaired final backslash never matches. */
- if (!pat[i+1]) return 0;
- i++;
- }
- if (pat[i] == '/') {
- if (overflow) return 0;
- in_bracket = 0;
- pat += i+1;
- i = -1;
- pos += j+1;
- j = -1;
- }
- /* Only store a character if it fits in the buffer, but if
- * a potential bracket expression is open, the overflow
- * must be remembered and handled later only if the bracket
- * is unterminated (and thereby a literal), so as not to
- * disallow long bracket expressions with short matches. */
- if (pos+(j+1) < PATH_MAX) {
- buf[pos+j++] = pat[i];
- } else if (in_bracket) {
- overflow = 1;
- } else {
- return 0;
- }
- /* If we consume any new components, the caller-passed type
- * or dummy type from above is no longer valid. */
- type = 0;
- }
- buf[pos] = 0;
- if (!*pat) {
- /* If we consumed any components above, or if GLOB_MARK is
- * requested and we don't yet know if the match is a dir,
- * we must confirm the file exists and/or determine its type.
- *
- * If marking dirs, symlink type is inconclusive; we need the
- * type for the symlink target, and therefore must try stat
- * first unless type is known not to be a symlink. Otherwise,
- * or if that fails, use lstat for determining existence to
- * avoid false negatives in the case of broken symlinks. */
- struct stat st;
- if ((flags & GLOB_MARK) && (!type||type==DT_LNK) && !stat(buf, &st)) {
- if (S_ISDIR(st.st_mode)) type = DT_DIR;
- else type = DT_REG;
- }
- if (!type && lstat(buf, &st)) {
- if (errno!=ENOENT && (errfunc(buf, errno) || (flags & GLOB_ERR)))
- return GLOB_ABORTED;
- return 0;
- }
- if (append(tail, buf, pos, (flags & GLOB_MARK) && type==DT_DIR))
- return GLOB_NOSPACE;
- return 0;
- }
- char *p2 = strchr(pat, '/'), saved_sep = '/';
- /* Check if the '/' was escaped and, if so, remove the escape char
- * so that it will not be unpaired when passed to fnmatch. */
- if (p2 && !(flags & GLOB_NOESCAPE)) {
- char *p;
- for (p=p2; p>pat && p[-1]=='\\'; p--);
- if ((p2-p)%2) {
- p2--;
- saved_sep = '\\';
- }
- }
- DIR *dir = opendir(pos ? buf : ".");
- if (!dir) {
- if (errfunc(buf, errno) || (flags & GLOB_ERR))
- return GLOB_ABORTED;
- return 0;
- }
- int old_errno = errno;
- struct dirent *de;
- while (errno=0, de=readdir(dir)) {
- /* Quickly skip non-directories when there's pattern left. */
- if (p2 && de->d_type && de->d_type!=DT_DIR && de->d_type!=DT_LNK)
- continue;
-
- size_t l = strlen(de->d_name);
- if (l >= PATH_MAX-pos) continue;
-
- if (p2) *p2 = 0;
-
- int fnm_flags= ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)
- | ((!(flags & GLOB_PERIOD)) ? FNM_PERIOD : 0);
-
- if (fnmatch(pat, de->d_name, fnm_flags))
- continue;
-
- /* With GLOB_PERIOD, don't allow matching . or .. unless
- * fnmatch would match them with FNM_PERIOD rules in effect. */
- if (p2 && (flags & GLOB_PERIOD) && de->d_name[0]=='.'
- && (!de->d_name[1] || de->d_name[1]=='.' && !de->d_name[2])
- && fnmatch(pat, de->d_name, fnm_flags | FNM_PERIOD))
- continue;
-
- memcpy(buf+pos, de->d_name, l+1);
- if (p2) *p2 = saved_sep;
- int r = do_glob(buf, pos+l, de->d_type, p2 ? p2 : "", flags, errfunc, tail);
- if (r) {
- closedir(dir);
- return r;
- }
- }
- int readerr = errno;
- if (p2) *p2 = saved_sep;
- closedir(dir);
- if (readerr && (errfunc(buf, errno) || (flags & GLOB_ERR)))
- return GLOB_ABORTED;
- errno = old_errno;
- return 0;
-}
-
-static int ignore_err(const char *path, int err)
-{
- return 0;
-}
-
-static void freelist(struct match *head)
-{
- struct match *match, *next;
- for (match=head->next; match; match=next) {
- next = match->next;
- free(match);
- }
-}
-
-static int sort(const void *a, const void *b)
-{
- return strcmp(*(const char **)a, *(const char **)b);
-}
-
-static int expand_tilde(char **pat, char *buf, size_t *pos)
-{
- char *p = *pat + 1;
- size_t i = 0;
-
- char delim, *name_end = strchrnul(p, '/');
- if ((delim = *name_end)) *name_end++ = 0;
- *pat = name_end;
-
- char *home = *p ? NULL : getenv("HOME");
- if (!home) {
- struct passwd pw, *res;
- switch (*p ? getpwnam_r(p, &pw, buf, PATH_MAX, &res)
- : getpwuid_r(getuid(), &pw, buf, PATH_MAX, &res)) {
- case ENOMEM:
- return GLOB_NOSPACE;
- case 0:
- if (!res)
- default:
- return GLOB_NOMATCH;
- }
- home = pw.pw_dir;
- }
- while (i < PATH_MAX - 2 && *home)
- buf[i++] = *home++;
- if (*home)
- return GLOB_NOMATCH;
- if ((buf[i] = delim))
- buf[++i] = 0;
- *pos = i;
- return 0;
-}
-
-int glob(const char *restrict pat, int flags, int (*errfunc)(const char *path, int err), glob_t *restrict g)
-{
- struct match head = { .next = NULL }, *tail = &head;
- size_t cnt, i;
- size_t offs = (flags & GLOB_DOOFFS) ? g->gl_offs : 0;
- int error = 0;
- char buf[PATH_MAX];
-
- if (!errfunc) errfunc = ignore_err;
-
- if (!(flags & GLOB_APPEND)) {
- g->gl_offs = offs;
- g->gl_pathc = 0;
- g->gl_pathv = NULL;
- }
-
- if (*pat) {
- char *p = strdup(pat);
- if (!p) return GLOB_NOSPACE;
- buf[0] = 0;
- size_t pos = 0;
- char *s = p;
- if ((flags & (GLOB_TILDE | GLOB_TILDE_CHECK)) && *p == '~')
- error = expand_tilde(&s, buf, &pos);
- if (!error)
- error = do_glob(buf, pos, 0, s, flags, errfunc, &tail);
- free(p);
- }
-
- if (error == GLOB_NOSPACE) {
- freelist(&head);
- return error;
- }
-
- for (cnt=0, tail=head.next; tail; tail=tail->next, cnt++);
- if (!cnt) {
- if (flags & GLOB_NOCHECK) {
- tail = &head;
- if (append(&tail, pat, strlen(pat), 0))
- return GLOB_NOSPACE;
- cnt++;
- } else
- return GLOB_NOMATCH;
- }
-
- if (flags & GLOB_APPEND) {
- char **pathv = realloc(g->gl_pathv, (offs + g->gl_pathc + cnt + 1) * sizeof(char *));
- if (!pathv) {
- freelist(&head);
- return GLOB_NOSPACE;
- }
- g->gl_pathv = pathv;
- offs += g->gl_pathc;
- } else {
- g->gl_pathv = malloc((offs + cnt + 1) * sizeof(char *));
- if (!g->gl_pathv) {
- freelist(&head);
- return GLOB_NOSPACE;
- }
- for (i=0; i<offs; i++)
- g->gl_pathv[i] = NULL;
- }
- for (i=0, tail=head.next; i<cnt; tail=tail->next, i++)
- g->gl_pathv[offs + i] = tail->name;
- g->gl_pathv[offs + i] = NULL;
- g->gl_pathc += cnt;
-
- if (!(flags & GLOB_NOSORT))
- qsort(g->gl_pathv+offs, cnt, sizeof(char *), sort);
-
- return error;
-}
-
-void globfree(glob_t *g)
-{
- size_t i;
- for (i=0; i<g->gl_pathc; i++)
- free(g->gl_pathv[g->gl_offs + i] - offsetof(struct match, name));
- free(g->gl_pathv);
- g->gl_pathc = 0;
- g->gl_pathv = NULL;
-}
-
-// weak_alias(glob, glob64);
-// weak_alias(globfree, globfree64);
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