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| author | Rob Landley <rob@landley.net> | 2021-03-13 02:41:41 -0600 |
|---|---|---|
| committer | Rob Landley <rob@landley.net> | 2021-03-13 02:41:41 -0600 |
| commit | 4ff131ff958e2bbe7f1cc8a3d0e0acdd4a48c7ee (patch) | |
| tree | e14392adbd5a4055474eda8c5803958840a6bf8b /lib | |
| parent | 56ef8fcedc48bed353e3ccc694a8db3f322fae6f (diff) | |
| download | toybox-4ff131ff958e2bbe7f1cc8a3d0e0acdd4a48c7ee.tar.gz | |
Elliott spotted that errno==EAGAIN usually goes with an rc of -1, not 0.
(I hit 0 paired with EAGAIN causing premature pipeline end many years
ago when a pipeline was Ctrl-Z then fg, may not still be possible with
modern kernels but I left that covered just in case.)
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/portability.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/portability.c b/lib/portability.c index 0c364c29..f3c3c251 100644 --- a/lib/portability.c +++ b/lib/portability.c @@ -622,12 +622,13 @@ long long sendfile_len(int in, int out, long long bytes, long long *consumed) len = bytes-total; if (bytes<0 || len>sizeof(libbuf)) len = sizeof(libbuf); + errno = 0; #if CFG_TOYBOX_COPYFILERANGE len = copy_file_range(in, 0, out, 0, bytes, 0); #else ww = len = read(in, libbuf, len); #endif - if (!len && errno==EAGAIN) continue; + if (len<1 && errno==EAGAIN) continue; if (len<1) break; if (consumed) *consumed += len; if (ww && writeall(out, libbuf, len) != len) return -1; |