[PATCH v2 01/11] strbuf_read_file(): preserve errno on failure
From: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
This will allow the function to be used in a later patch.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
strbuf.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/strbuf.c b/strbuf.c
index 0346e74..f1fec58 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -482,15 +482,18 @@ int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term)
int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
{
- int fd, len;
+ int fd, len, saved_errno;
fd = open(path, O_RDONLY);
if (fd < 0)
return -1;
len = strbuf_read(sb, fd, hint);
+ saved_errno = errno;
close(fd);
- if (len < 0)
+ if (len < 0) {
+ errno = saved_errno;
return -1;
+ }
return len;
}
--
2.1.1
Michael Haggerty <mhagger@alum.mit.edu>