diff options
Diffstat (limited to 'sha1_file.c')
| -rw-r--r-- | sha1_file.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/sha1_file.c b/sha1_file.c index 29c260cf6..eec4f418b 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -552,7 +552,7 @@ void unuse_pack(struct pack_window **w_cursor) } } -static void open_packed_git(struct packed_git *p) +static int open_packed_git(struct packed_git *p) { struct stat st; struct pack_header hdr; @@ -562,49 +562,50 @@ static void open_packed_git(struct packed_git *p) p->pack_fd = open(p->pack_name, O_RDONLY); if (p->pack_fd < 0 || fstat(p->pack_fd, &st)) - die("packfile %s cannot be opened", p->pack_name); + return -1; /* If we created the struct before we had the pack we lack size. */ if (!p->pack_size) { if (!S_ISREG(st.st_mode)) - die("packfile %s not a regular file", p->pack_name); + return error("packfile %s not a regular file", p->pack_name); p->pack_size = st.st_size; } else if (p->pack_size != st.st_size) - die("packfile %s size changed", p->pack_name); + return error("packfile %s size changed", p->pack_name); /* We leave these file descriptors open with sliding mmap; * there is no point keeping them open across exec(), though. */ fd_flag = fcntl(p->pack_fd, F_GETFD, 0); if (fd_flag < 0) - die("cannot determine file descriptor flags"); + return error("cannot determine file descriptor flags"); fd_flag |= FD_CLOEXEC; if (fcntl(p->pack_fd, F_SETFD, fd_flag) == -1) - die("cannot set FD_CLOEXEC"); + return error("cannot set FD_CLOEXEC"); /* Verify we recognize this pack file format. */ 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); + return error("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); + return error("file %s is not a GIT packfile", p->pack_name); if (!pack_version_ok(hdr.hdr_version)) - die("packfile %s is version %u and not supported" + return error("packfile %s is version %u and not supported" " (try upgrading GIT to a newer version)", p->pack_name, ntohl(hdr.hdr_version)); /* Verify the pack matches its index. */ if (num_packed_objects(p) != ntohl(hdr.hdr_entries)) - die("packfile %s claims to have %u objects" + return error("packfile %s claims to have %u objects" " while index size indicates %u objects", p->pack_name, ntohl(hdr.hdr_entries), 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); + return error("end of packfile %s is unavailable", p->pack_name); if (read_in_full(p->pack_fd, sha1, sizeof(sha1)) != sizeof(sha1)) - die("packfile %s signature is unavailable", p->pack_name); + return error("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); + return error("packfile %s does not match index", p->pack_name); + return 0; } static int in_window(struct pack_window *win, unsigned long offset) @@ -627,8 +628,8 @@ unsigned char* use_pack(struct packed_git *p, { struct pack_window *win = *w_cursor; - if (p->pack_fd == -1) - open_packed_git(p); + if (p->pack_fd == -1 && open_packed_git(p)) + die("packfile %s cannot be accessed", p->pack_name); /* Since packfiles end in a hash of their content and its * pointless to ask for an offset into the middle of that |