diff options
Diffstat (limited to 'libfstools/overlay.c')
| -rw-r--r-- | libfstools/overlay.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/libfstools/overlay.c b/libfstools/overlay.c index 5a49da2..6024586 100644 --- a/libfstools/overlay.c +++ b/libfstools/overlay.c @@ -67,15 +67,29 @@ handle_rmdir(const char *dir) void foreachdir(const char *dir, int (*cb)(const char*)) { + static char *globdir = NULL; + static size_t globdirlen = 0; struct stat s = { 0 }; - char globdir[256]; + size_t dirlen = strlen(dir); glob_t gl; int j; - if (dir[strlen(dir) - 1] == '/') - snprintf(globdir, 256, "%s*", dir); + if (dirlen + sizeof("/*") > globdirlen) { + /* Alloc extra 256 B to avoid too many reallocs */ + size_t len = dirlen + sizeof("/*") + 256; + char *tmp; + + tmp = realloc(globdir, len); + if (!tmp) + return; + globdir = tmp; + globdirlen = len; + } + + if (dir[dirlen - 1] == '/') + sprintf(globdir, "%s*", dir); else - snprintf(globdir, 256, "%s/*", dir); /**/ + sprintf(globdir, "%s/*", dir); if (!glob(globdir, GLOB_NOESCAPE | GLOB_MARK | GLOB_ONLYDIR, NULL, &gl)) for (j = 0; j < gl.gl_pathc; j++) { |