diff options
| author | Pali Rohár <pali@kernel.org> | 2022-01-25 20:13:10 +0300 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2022-01-31 12:23:38 +0300 |
| commit | 6ba7d63e018c6d777c9fe7afdf9719fcb220c31a (patch) | |
| tree | 3d96005f0ba41e974b2027b5d0e49f389135916e /tools | |
| parent | 8d3b79c4a391892f270473cfc3117d45ffe05008 (diff) | |
| download | u-boot-6ba7d63e018c6d777c9fe7afdf9719fcb220c31a.tar.xz | |
tools: kwboot: Handle EINTR in kwboot_write()
The write() syscall may be interrupted. Handle EINTR and retry it.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/kwboot.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/tools/kwboot.c b/tools/kwboot.c index de433c1b04..8b748f0fdd 100644 --- a/tools/kwboot.c +++ b/tools/kwboot.c @@ -292,13 +292,15 @@ static int blk_rsp_timeo = KWBOOT_BLK_RSP_TIMEO; static ssize_t kwboot_write(int fd, const char *buf, size_t len) { - size_t tot = 0; + ssize_t tot = 0; while (tot < len) { ssize_t wr = write(fd, buf + tot, len - tot); - if (wr < 0) - return -1; + if (wr < 0 && errno == EINTR) + continue; + else if (wr < 0) + return wr; tot += wr; } |