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authorShawn O. Pearce <spearce@spearce.org>2007-01-14 01:01:49 -0500
committerJunio C Hamano <junkio@cox.net>2007-01-14 00:42:41 -0800
commite6e2bd6201d32342df7a713c847161ab296885ea (patch)
tree1d1e4220abd26adccf9476fdeaa8ae358b27d506
parent38434f2eed45f42ed706d07564079c23ee686511 (diff)
downloadgit-e6e2bd6201d32342df7a713c847161ab296885ea.tar.gz
git-e6e2bd6201d32342df7a713c847161ab296885ea.tar.xz
Remove read_or_die in favor of better error messages.
Originally I introduced read_or_die for the purpose of reading the pack header and trailer, and I was too lazy to print proper error messages. Linus Torvalds <torvalds@osdl.org>: > For a read error, at the very least you have to say WHICH FILE > couldn't be read, because it's usually a matter of some file just > being too short, not some system-wide problem. and of course Linus is right. Make it so. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
-rw-r--r--cache.h1
-rw-r--r--sha1_file.c6
-rw-r--r--write_or_die.c12
3 files changed, 4 insertions, 15 deletions
diff --git a/cache.h b/cache.h
index c482c32a0..620b6a4ed 100644
--- a/cache.h
+++ b/cache.h
@@ -434,7 +434,6 @@ extern char *git_log_output_encoding;
extern int copy_fd(int ifd, int ofd);
extern int read_in_full(int fd, void *buf, size_t count);
-extern void read_or_die(int fd, void *buf, size_t count);
extern int write_in_full(int fd, const void *buf, size_t count);
extern void write_or_die(int fd, const void *buf, size_t count);
extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
diff --git a/sha1_file.c b/sha1_file.c
index 2a5be53fa..1b1c0f7b4 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -572,7 +572,8 @@ static void open_packed_git(struct packed_git *p)
die("cannot set FD_CLOEXEC");
/* Verify we recognize this pack file format. */
- read_or_die(p->pack_fd, &hdr, sizeof(hdr));
+ if (read_in_full(p->pack_fd, &hdr, sizeof(hdr)) != sizeof(hdr))
+ die("file %s is far too short to be a packfile", p->pack_name);
if (hdr.hdr_signature != htonl(PACK_SIGNATURE))
die("file %s is not a GIT packfile", p->pack_name);
if (!pack_version_ok(hdr.hdr_version))
@@ -588,7 +589,8 @@ static void open_packed_git(struct packed_git *p)
num_packed_objects(p));
if (lseek(p->pack_fd, p->pack_size - sizeof(sha1), SEEK_SET) == -1)
die("end of packfile %s is unavailable", p->pack_name);
- read_or_die(p->pack_fd, sha1, sizeof(sha1));
+ if (read_in_full(p->pack_fd, sha1, sizeof(sha1)) != sizeof(sha1))
+ die("packfile %s signature is unavailable", p->pack_name);
idx_sha1 = ((unsigned char *)p->index_base) + p->index_size - 40;
if (hashcmp(sha1, idx_sha1))
die("packfile %s does not match index", p->pack_name);
diff --git a/write_or_die.c b/write_or_die.c
index 4e8183e93..046e79d48 100644
--- a/write_or_die.c
+++ b/write_or_die.c
@@ -17,18 +17,6 @@ int read_in_full(int fd, void *buf, size_t count)
return total;
}
-void read_or_die(int fd, void *buf, size_t count)
-{
- ssize_t loaded;
-
- loaded = read_in_full(fd, buf, count);
- if (loaded != count) {
- if (loaded < 0)
- die("read error (%s)", strerror(errno));
- die("read error: end of file");
- }
-}
-
int write_in_full(int fd, const void *buf, size_t count)
{
const char *p = buf;