When adding wotktrees git can die in get_common_dir_noenv while
examining existing worktrees because the commondir file does not exist.
Rather than testing if the file exists before reading it handle ENOENT.
Signed-off-by: Michal Suchanek <msuchanek@xxxxxxx>
---
v2:
- do not test file existence first, just read it and handle ENOENT.
- handle zero size file correctly
---
setup.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/setup.c b/setup.c
index ca9e8a949ed8..dd865f280d34 100644
--- a/setup.c
+++ b/setup.c
@@ -270,12 +270,20 @@ int get_common_dir_noenv(struct strbuf *sb, const char *gitdir)
{
struct strbuf data = STRBUF_INIT;
struct strbuf path = STRBUF_INIT;
- int ret = 0;
+ int ret;
strbuf_addf(&path, "%s/commondir", gitdir);
- if (file_exists(path.buf)) {
- if (strbuf_read_file(&data, path.buf, 0) <= 0)
+ ret = strbuf_read_file(&data, path.buf, 0);
+ if (ret <= 0) {
+ /*
+ * if file is missing or zero size (just being written)
+ * assume default, bail otherwise
+ */
+ if (ret && errno != ENOENT)
die_errno(_("failed to read %s"), path.buf);
+ strbuf_addstr(sb, gitdir);
+ ret = 0;
+ } else {
while (data.len && (data.buf[data.len - 1] == '\n' ||
data.buf[data.len - 1] == '\r'))
data.len--;
@@ -286,8 +294,6 @@ int get_common_dir_noenv(struct strbuf *sb, const char *gitdir)
strbuf_addbuf(&path, &data);
strbuf_add_real_path(sb, path.buf);
ret = 1;
- } else {
- strbuf_addstr(sb, gitdir);
}
strbuf_release(&data);
--
2.20.1
