From: Sam Vilain Date: Wed, 26 May 2010 06:00:57 GMT Subject: [PATCH 087/104] hash_object: correction for zero length file Message-ID: <1274853674-18521-87-git-send-email-sam.vilain@catalyst.net.nz> In-Reply-To: <1274853674-18521-1-git-send-email-sam.vilain@catalyst.net.nz> From: Dmitry Potapov The check whether size is zero was done after if size <= SMALL_FILE_SIZE, as result, zero size case was never triggered. Instead zero length file was treated as any other small file. This did not caused any problem, but if we have a special case for size equal to zero, it is better to make it work and avoid redundant malloc(). Signed-off-by: Dmitry Potapov Signed-off-by: Junio C Hamano --- sha1_file.c | 7 ++++--- 1 files changed, 4 insertions(+), 3 deletions(-) diff --git a/sha1_file.c b/sha1_file.c index ff65328..1b551e4 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -2448,6 +2448,8 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, else ret = -1; strbuf_release(&sbuf); + } else if (!size) { + ret = index_mem(sha1, NULL, size, write_object, type, path); } else if (size <= SMALL_FILE_SIZE) { char *buf = xmalloc(size); if (size == read_in_full(fd, buf, size)) @@ -2456,12 +2458,11 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, else ret = error("short read %s", strerror(errno)); free(buf); - } else if (size) { + } else { void *buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0); ret = index_mem(sha1, buf, size, write_object, type, path); munmap(buf, size); - } else - ret = index_mem(sha1, NULL, size, write_object, type, path); + } close(fd); return ret; } -- 1.7.1.rc2.333.gb2668