diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1997-06-20 20:37:46 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1997-06-20 20:37:46 +0000 |
| commit | 6c1e24c665b190ea0e52e43efafd616aa6ff6e51 (patch) | |
| tree | 173c27872a19bd02d0c701b5a8a5453114ccd77b /lib/libc/stdlib | |
| parent | db2c002aa4938b70a4f8fc0ab5c7247693c1bf6b (diff) | |
add ELOOP support; shigio@wafu.netgate.net
Diffstat (limited to 'lib/libc/stdlib')
| -rw-r--r-- | lib/libc/stdlib/realpath.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/libc/stdlib/realpath.c b/lib/libc/stdlib/realpath.c index 51e336efdd5..78c286014dc 100644 --- a/lib/libc/stdlib/realpath.c +++ b/lib/libc/stdlib/realpath.c @@ -35,7 +35,7 @@ */ #if defined(LIBC_SCCS) && !defined(lint) -static char *rcsid = "$OpenBSD: realpath.c,v 1.2 1996/08/19 08:33:47 tholo Exp $"; +static char *rcsid = "$OpenBSD: realpath.c,v 1.3 1997/06/20 20:37:45 deraadt Exp $"; #endif /* LIBC_SCCS and not lint */ #include <sys/param.h> @@ -62,6 +62,7 @@ realpath(path, resolved) struct stat sb; int fd, n, rootd, serrno; char *p, *q, wbuf[MAXPATHLEN]; + int symlinks = 0; /* Save the starting point. */ if ((fd = open(".", O_RDONLY)) < 0) { @@ -100,6 +101,10 @@ loop: /* Deal with the last component. */ if (lstat(p, &sb) == 0) { if (S_ISLNK(sb.st_mode)) { + if (++symlinks > MAXSYMLINKS) { + errno = ELOOP; + goto err1; + } n = readlink(p, resolved, MAXPATHLEN); if (n < 0) goto err1; |