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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-03-17 08:23:14 (GMT)
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-03-17 08:23:14 (GMT)
commit41872a8df6139ee1a5b96c5f3b4dfed916627534 (patch)
treeae3e9610e451c3a0781874ec8067b1b208371ccd /dir.c
parent8e1f6b07501e6b136000da5a1facf91575aa2388 (diff)
dir.c: fix DT_UNKNOWN recursion
* dir.c (glob_helper): distinguish not-yet-stated and DT_UNKNOWN by readdir, and traverse recursively for the former. Linux readdir returns DT_UNKNOWN on some filesystems, e.g., smbfs, iso9660. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49983 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'dir.c')
-rw-r--r--dir.c64
1 files changed, 38 insertions, 26 deletions
diff --git a/dir.c b/dir.c
index 19524ae..d5b1240 100644
--- a/dir.c
+++ b/dir.c
@@ -1522,7 +1522,25 @@ replace_real_basename(char *path, long base, rb_encoding *enc, int norm_p)
# error not implemented
#endif
-enum answer {UNKNOWN = -1, NO, YES};
+#ifndef IFTODT
+# define IFTODT(m) (((m) & S_IFMT) / ((~S_IFMT & S_IFMT-1) + 1))
+#endif
+
+typedef enum {
+#ifdef DT_UNKNOWN
+ path_exist = DT_UNKNOWN,
+ path_directory = DT_DIR,
+ path_regular = DT_REG,
+ path_symlink = DT_LNK,
+#else
+ path_exist,
+ path_directory = IFTODT(S_IFDIR),
+ path_regular = IFTODT(S_IFREG),
+ path_symlink = IFTODT(S_IFLNK),
+#endif
+ path_noent = -1,
+ path_unknown = -2
+} rb_pathtype_t;
#ifndef S_ISDIR
# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
@@ -1570,8 +1588,7 @@ static int
glob_helper(
const char *path,
int dirsep, /* '/' should be placed before appending child entry's name to 'path'. */
- enum answer exist, /* Does 'path' indicate an existing entry? */
- enum answer isdir, /* Does 'path' indicate a directory or a symlink to a directory? */
+ rb_pathtype_t pathtype, /* type of 'path' */
struct glob_pattern **beg,
struct glob_pattern **end,
int flags,
@@ -1619,31 +1636,27 @@ glob_helper(
pathlen = strlen(path);
if (*path) {
- if (match_all && exist == UNKNOWN) {
+ if (match_all && pathtype == path_unknown) {
if (do_lstat(path, &st, flags, enc) == 0) {
- exist = YES;
- isdir = S_ISDIR(st.st_mode) ? YES : S_ISLNK(st.st_mode) ? UNKNOWN : NO;
+ pathtype = IFTODT(st.st_mode);
}
else {
- exist = NO;
- isdir = NO;
+ pathtype = path_noent;
}
}
- if (match_dir && isdir == UNKNOWN) {
+ if (match_dir && pathtype == path_unknown) {
if (do_stat(path, &st, flags, enc) == 0) {
- exist = YES;
- isdir = S_ISDIR(st.st_mode) ? YES : NO;
+ pathtype = IFTODT(st.st_mode);
}
else {
- exist = NO;
- isdir = NO;
+ pathtype = path_noent;
}
}
- if (match_all && exist == YES) {
+ if (match_all && pathtype > path_noent) {
status = glob_call_func(func, path, arg, enc);
if (status) return status;
}
- if (match_dir && isdir == YES) {
+ if (match_dir && pathtype == path_directory) {
char *tmp = join_path(path, pathlen, dirsep, "", 0);
if (!tmp) return -1;
status = glob_call_func(func, tmp, arg, enc);
@@ -1652,7 +1665,7 @@ glob_helper(
}
}
- if (exist == NO || isdir == NO) return 0;
+ if (pathtype == path_noent) return 0;
if (magical || recursive) {
struct dirent *dp;
@@ -1694,7 +1707,7 @@ glob_helper(
# endif
while ((dp = READDIR(dirp, enc)) != NULL) {
char *buf;
- enum answer new_isdir = UNKNOWN;
+ rb_pathtype_t new_pathtype = path_unknown;
const char *name;
size_t namlen;
int dotfile = 0;
@@ -1733,13 +1746,11 @@ glob_helper(
/* RECURSIVE never match dot files unless FNM_DOTMATCH is set */
#ifndef DT_DIR
if (do_lstat(buf, &st, flags, enc) == 0)
- new_isdir = S_ISDIR(st.st_mode) ? YES : S_ISLNK(st.st_mode) ? UNKNOWN : NO;
+ new_pathtype = IFTODT(st.st_mode);
else
- new_isdir = NO;
+ new_pathtype = path_noent;
#else
- new_isdir = dp->d_type == DT_DIR ? YES :
- (dp->d_type == DT_LNK || dp->d_type == DT_UNKNOWN) ? UNKNOWN :
- NO;
+ new_pathtype = dp->d_type;
#endif
}
@@ -1753,7 +1764,8 @@ glob_helper(
for (cur = beg; cur < end; ++cur) {
struct glob_pattern *p = *cur;
if (p->type == RECURSIVE) {
- if (new_isdir == YES) /* not symlink but real directory */
+ if (new_pathtype == path_directory || /* not symlink but real directory */
+ new_pathtype == path_exist)
*new_end++ = p; /* append recursive pattern */
p = p->next; /* 0 times recursion */
}
@@ -1774,7 +1786,7 @@ glob_helper(
}
}
- status = glob_helper(buf, 1, YES, new_isdir, new_beg, new_end,
+ status = glob_helper(buf, 1, new_pathtype, new_beg, new_end,
flags, func, arg, enc);
GLOB_FREE(buf);
GLOB_FREE(new_beg);
@@ -1835,7 +1847,7 @@ glob_helper(
buf = replace_real_basename(buf, base, enc, IF_NORMALIZE_UTF8PATH(1)+0);
}
#endif
- status = glob_helper(buf, 1, UNKNOWN, UNKNOWN, new_beg,
+ status = glob_helper(buf, 1, path_unknown, new_beg,
new_end, flags, func, arg, enc);
GLOB_FREE(buf);
GLOB_FREE(new_beg);
@@ -1877,7 +1889,7 @@ ruby_glob0(const char *path, int flags, ruby_glob_func *func, VALUE arg, rb_enco
GLOB_FREE(buf);
return -1;
}
- status = glob_helper(buf, 0, UNKNOWN, UNKNOWN, &list, &list + 1, flags, func, arg, enc);
+ status = glob_helper(buf, 0, path_unknown, &list, &list + 1, flags, func, arg, enc);
glob_free_pattern(list);
GLOB_FREE(buf);