diff options
| author | Todd C. Miller <millert@cvs.openbsd.org> | 2004-09-16 15:12:10 +0000 |
|---|---|---|
| committer | Todd C. Miller <millert@cvs.openbsd.org> | 2004-09-16 15:12:10 +0000 |
| commit | 7a3af50607a1ab6f9cbd52b9d0e81f24a47ba672 (patch) | |
| tree | 2bfbc5bee1a014e99ee93622b057030023672fe3 /lib/libc/hash/helper.c | |
| parent | 5f92e01b3daa4f01bde95c45beca9dfdb9e2cc9f (diff) | |
Fix MD5FileChunk() when passed a 0 length; makes MD5File() work again.
From Peter Galbavy.
Diffstat (limited to 'lib/libc/hash/helper.c')
| -rw-r--r-- | lib/libc/hash/helper.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/lib/libc/hash/helper.c b/lib/libc/hash/helper.c index 016a31ecd4e..bf3a6c243c5 100644 --- a/lib/libc/hash/helper.c +++ b/lib/libc/hash/helper.c @@ -1,4 +1,4 @@ -/* $OpenBSD: helper.c,v 1.6 2004/06/22 01:57:29 jfb Exp $ */ +/* $OpenBSD: helper.c,v 1.7 2004/09/16 15:12:09 millert Exp $ */ /* * ---------------------------------------------------------------------------- @@ -10,10 +10,11 @@ */ #if defined(LIBC_SCCS) && !defined(lint) -static const char rcsid[] = "$OpenBSD: helper.c,v 1.6 2004/06/22 01:57:29 jfb Exp $"; +static const char rcsid[] = "$OpenBSD: helper.c,v 1.7 2004/09/16 15:12:09 millert Exp $"; #endif /* LIBC_SCCS and not lint */ #include <sys/param.h> +#include <sys/stat.h> #include <errno.h> #include <fcntl.h> @@ -48,6 +49,7 @@ HASHEnd(HASH_CTX *ctx, char *buf) char * HASHFileChunk(const char *filename, char *buf, off_t off, off_t len) { + struct stat sb; u_char buffer[BUFSIZ]; HASH_CTX ctx; int fd, save_errno; @@ -57,6 +59,13 @@ HASHFileChunk(const char *filename, char *buf, off_t off, off_t len) if ((fd = open(filename, O_RDONLY)) < 0) return (NULL); + if (len == 0) { + if (fstat(fd, &sb) == -1) { + close(fd); + return (NULL); + } + len = sb.st_size; + } if (off > 0 && lseek(fd, off, SEEK_SET) < 0) return (NULL); |