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authorRich Felker <dalias@aerifal.cx>2011-03-24 22:58:21 -0400
committerRich Felker <dalias@aerifal.cx>2011-03-24 22:58:21 -0400
commit8ae2fa65636b732e04e19b2521edc335867ba53b (patch)
tree7429156e4c0656230331d3151cd15721d6916892 /src/stdio
parentb470030f839a375e5030ec9d44903ef7581c15a2 (diff)
downloadmusl-8ae2fa65636b732e04e19b2521edc335867ba53b.tar.gz
fix non-atomicity of puts
Diffstat (limited to 'src/stdio')
-rw-r--r--src/stdio/puts.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/stdio/puts.c b/src/stdio/puts.c
index eb70efdc..4c0e583c 100644
--- a/src/stdio/puts.c
+++ b/src/stdio/puts.c
@@ -2,5 +2,9 @@
int puts(const char *s)
{
- return -(fputs(s, stdout) < 0 || putchar('\n') < 0);
+ int r;
+ FLOCK(stdout);
+ r = -(fputs(s, stdout) < 0 || putchar('\n') < 0);
+ FUNLOCK(stdout);
+ return r;
}