diff --git a/builtin-apply.c b/builtin-apply.c
index fd92ef7174dae1586921ebd34233c93b381106de..0399743c4e2288a0812faeea92c07a5f6a13fccc 100644 (file)
--- a/builtin-apply.c
+++ b/builtin-apply.c
void *buffer = xmalloc(alloc);
for (;;) {
- int nr = alloc - size;
+ ssize_t nr = alloc - size;
if (nr < 1024) {
alloc += CHUNKSIZE;
buffer = xrealloc(buffer, alloc);
@@ -1468,15 +1468,15 @@ static int read_old_data(struct stat *st, const char *path, char **buf_p, unsign
return error("unable to open %s", path);
got = 0;
for (;;) {
- int ret = xread(fd, buf + got, size - got);
+ ssize_t ret = xread(fd, buf + got, size - got);
if (ret <= 0)
break;
got += ret;
}
close(fd);
nsize = got;
- nbuf = buf;
- if (convert_to_git(path, &nbuf, &nsize)) {
+ nbuf = convert_to_git(path, buf, &nsize);
+ if (nbuf) {
free(buf);
*buf_p = nbuf;
*alloc_p = nsize;
@@ -2009,6 +2009,29 @@ static int apply_data(struct patch *patch, struct stat *st, struct cache_entry *
return 0;
}
+static int check_to_create_blob(const char *new_name, int ok_if_exists)
+{
+ struct stat nst;
+ if (!lstat(new_name, &nst)) {
+ if (S_ISDIR(nst.st_mode) || ok_if_exists)
+ return 0;
+ /*
+ * A leading component of new_name might be a symlink
+ * that is going to be removed with this patch, but
+ * still pointing at somewhere that has the path.
+ * In such a case, path "new_name" does not exist as
+ * far as git is concerned.
+ */
+ if (has_symlink_leading_path(new_name, NULL))
+ return 0;
+
+ return error("%s: already exists in working directory", new_name);
+ }
+ else if ((errno != ENOENT) && (errno != ENOTDIR))
+ return error("%s: %s", new_name, strerror(errno));
+ return 0;
+}
+
static int check_patch(struct patch *patch, struct patch *prev_patch)
{
struct stat st;
!ok_if_exists)
return error("%s: already exists in index", new_name);
if (!cached) {
- struct stat nst;
- if (!lstat(new_name, &nst)) {
- if (S_ISDIR(nst.st_mode) || ok_if_exists)
- ; /* ok */
- else
- return error("%s: already exists in working directory", new_name);
- }
- else if ((errno != ENOENT) && (errno != ENOTDIR))
- return error("%s: %s", new_name, strerror(errno));
+ int err = check_to_create_blob(new_name, ok_if_exists);
+ if (err)
+ return err;
}
if (!patch->new_mode) {
if (0 < patch->is_new)
@@ -2355,9 +2372,8 @@ 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, converted;
+ int fd;
char *nbuf;
- unsigned long nsize;
if (has_symlinks && S_ISLNK(mode))
/* Although buf:size is counted string, it also is NUL
@@ -2369,13 +2385,10 @@ static int try_create_file(const char *path, unsigned int mode, const char *buf,
if (fd < 0)
return -1;
- nsize = size;
- nbuf = (char *) buf;
- converted = convert_to_working_tree(path, &nbuf, &nsize);
- if (converted) {
+ nbuf = convert_to_working_tree(path, buf, &size);
+ if (nbuf)
buf = nbuf;
- size = nsize;
- }
+
while (size) {
int written = xwrite(fd, buf, size);
if (written < 0)
@@ -2387,7 +2400,7 @@ 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)
+ if (nbuf)
free(nbuf);
return 0;
}
@@ -2416,8 +2429,7 @@ static void create_one_file(char *path, unsigned mode, const char *buf, unsigned
* used to be.
*/
struct stat st;
- errno = 0;
- if (!lstat(path, &st) && S_ISDIR(st.st_mode) && !rmdir(path))
+ if (!lstat(path, &st) && (!S_ISDIR(st.st_mode) || !rmdir(path)))
errno = EEXIST;
}