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-rw-r--r--lib/libc/stdio/stdio.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/lib/libc/stdio/stdio.c b/lib/libc/stdio/stdio.c
index 96cfcae..4bee608 100644
--- a/lib/libc/stdio/stdio.c
+++ b/lib/libc/stdio/stdio.c
@@ -126,9 +126,15 @@ _swrite(fp, buf, n)
int n;
{
int ret;
+ int serrno;
- if (fp->_flags & __SAPP)
- (void)_sseek(fp, (fpos_t)0, SEEK_END);
+ if (fp->_flags & __SAPP) {
+ serrno = errno;
+ if (_sseek(fp, (fpos_t)0, SEEK_END) == -1 &&
+ (fp->_flags & __SOPT))
+ return (-1);
+ errno = serrno;
+ }
ret = (*fp->_write)(fp->_cookie, buf, n);
/* __SOFF removed even on success in case O_APPEND mode is set. */
if (ret >= 0) {
@@ -167,7 +173,8 @@ _sseek(fp, offset, whence)
if (errret == 0) {
fp->_flags |= __SERR;
errno = EINVAL;
- }
+ } else if (errret == ESPIPE)
+ fp->_flags &= ~__SAPP;
fp->_flags &= ~__SOFF;
ret = -1;
} else if (fp->_flags & __SOPT) {
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