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| author | Rich Felker <dalias@aerifal.cx> | 2014-06-20 02:13:38 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2014-06-20 02:13:38 -0400 |
| commit | 2e5d256984adb6864ece82fb689ddb2b20e10e4d (patch) | |
| tree | ca5b887dec106232936221ecb942cf52d3776b4f /src | |
| parent | 3fa2eb2aba8d6b54dec53e7ad4c37e17392b166f (diff) | |
| download | musl-2e5d256984adb6864ece82fb689ddb2b20e10e4d.tar.gz musl-2e5d256984adb6864ece82fb689ddb2b20e10e4d.tar.xz musl-2e5d256984adb6864ece82fb689ddb2b20e10e4d.zip | |
fix sendmmsg emulation return value for zero-length vector
this case is not even documented, but the kernel returns 0 here and it makes sense to be consistent.
Diffstat (limited to 'src')
| -rw-r--r-- | src/network/sendmmsg.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/network/sendmmsg.c b/src/network/sendmmsg.c index ff9f8618..eeae1d0a 100644 --- a/src/network/sendmmsg.c +++ b/src/network/sendmmsg.c @@ -12,6 +12,7 @@ int sendmmsg(int fd, struct mmsghdr *msgvec, unsigned int vlen, unsigned int fla * and the cmsg blocks cannot be modified in-place. */ int i; if (vlen > IOV_MAX) vlen = IOV_MAX; /* This matches the kernel. */ + if (!vlen) return 0; for (i=0; i<vlen; i++) { /* As an unfortunate inconsistency, the sendmmsg API uses * unsigned int for the resulting msg_len, despite sendmsg |