From cc96fd092a55a7a8685f0dee1e287ded70bc08b7 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Thu, 22 Mar 2007 17:32:51 -0700 Subject: [PATCH] git-apply: Do not free the wrong buffer when we convert the data for writeout When we write out the result of patch application, we sometimes need to munge the data (e.g. under core.autocrlf). After doing so, what we should free is the temporary buffer that holds the converted data returned from convert_to_working_tree(), not the original one. This patch also moves the call to open() up in the function, as the caller expects us to fail cheaply if leading directories need to be created (and then the caller creates them and calls us again). For that calling pattern, attempting conversion before opening the file adds unnecessary overhead. Acked-by: Linus Torvalds Signed-off-by: Junio C Hamano --- builtin-apply.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/builtin-apply.c b/builtin-apply.c index dfa171679..27a182bfa 100644 --- a/builtin-apply.c +++ b/builtin-apply.c @@ -2355,7 +2355,7 @@ static void add_index_file(const char *path, unsigned mode, void *buf, unsigned static int try_create_file(const char *path, unsigned int mode, const char *buf, unsigned long size) { - int fd; + int fd, converted; char *nbuf; unsigned long nsize; @@ -2364,17 +2364,18 @@ static int try_create_file(const char *path, unsigned int mode, const char *buf, * terminated. */ return symlink(buf, path); + + fd = open(path, O_CREAT | O_EXCL | O_WRONLY, (mode & 0100) ? 0777 : 0666); + if (fd < 0) + return -1; + nsize = size; nbuf = (char *) buf; - if (convert_to_working_tree(path, &nbuf, &nsize)) { - free((char *) buf); + converted = convert_to_working_tree(path, &nbuf, &nsize); + if (converted) { buf = nbuf; size = nsize; } - - fd = open(path, O_CREAT | O_EXCL | O_WRONLY, (mode & 0100) ? 0777 : 0666); - if (fd < 0) - return -1; while (size) { int written = xwrite(fd, buf, size); if (written < 0) @@ -2386,6 +2387,8 @@ static int try_create_file(const char *path, unsigned int mode, const char *buf, } if (close(fd) < 0) die("closing file %s: %s", path, strerror(errno)); + if (converted) + free(nbuf); return 0; } -- 2.30.2