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authorJohannes Sixt <johannes.sixt@telecom.at>2007-08-17 18:40:36 +0200
committerJohannes Sixt <johannes.sixt@telecom.at>2008-06-26 08:47:15 +0200
commitb2f5e2684da060dd821bf90f88df8b6dc9401a40 (patch)
tree8c3a39cd7085a5ce0e5b0cbd251768a0c3f236e1 /write_or_die.c
parentbfdd9ffd2f7376ccb8b9d4c4e39e2e0fe97d6b37 (diff)
downloadgit-b2f5e2684da060dd821bf90f88df8b6dc9401a40.tar.gz
git-b2f5e2684da060dd821bf90f88df8b6dc9401a40.tar.xz
Windows: Work around an oddity when a pipe with no reader is written to.
On Windows, write() is implemented using WriteFile(). After the reader closed its end of the pipe, the first WriteFile() returns ERROR_BROKEN_PIPE (which translates to EPIPE), subsequent WriteFile()s return ERROR_NO_DATA, which is translated to EINVAL. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Diffstat (limited to 'write_or_die.c')
-rw-r--r--write_or_die.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/write_or_die.c b/write_or_die.c
index 630be4cb9..e4c8e225f 100644
--- a/write_or_die.c
+++ b/write_or_die.c
@@ -34,7 +34,12 @@ void maybe_flush_or_die(FILE *f, const char *desc)
return;
}
if (fflush(f)) {
- if (errno == EPIPE)
+ /*
+ * On Windows, EPIPE is returned only by the first write()
+ * after the reading end has closed its handle; subsequent
+ * write()s return EINVAL.
+ */
+ if (errno == EPIPE || errno == EINVAL)
exit(0);
die("write failure on %s: %s", desc, strerror(errno));
}