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authorRené Scharfe <l.s.r@web.de>2017-04-18 17:57:42 -0400
committerJunio C Hamano <gitster@pobox.com>2017-04-18 19:57:41 -0700
commitda25bdb7766c01665500cf7c7b75e76ea1f28b49 (patch)
tree0130260984ed75f313cacb0fb1c452ce6f47dcf1 /git-compat-util.h
parentc3808ca6982b0ad7ee9b87eca9b50b9a24ec08b0 (diff)
downloadgit-da25bdb7766c01665500cf7c7b75e76ea1f28b49.tar.gz
use HOST_NAME_MAX to size buffers for gethostname(2)
POSIX limits the length of host names to HOST_NAME_MAX. Export the fallback definition from daemon.c and use this constant to make all buffers used with gethostname(2) big enough for any possible result and a terminating NUL. Inspired-by: David Turner <dturner@twosigma.com> Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: David Turner <dturner@twosigma.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'git-compat-util.h')
-rw-r--r--git-compat-util.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/git-compat-util.h b/git-compat-util.h
index d89a78616b..1f1e82407e 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -878,6 +878,10 @@ static inline size_t xsize_t(off_t len)
__attribute__((format (printf, 3, 4)))
extern int xsnprintf(char *dst, size_t max, const char *fmt, ...);
+#ifndef HOST_NAME_MAX
+#define HOST_NAME_MAX 256
+#endif
+
/* in ctype.c, for kwset users */
extern const unsigned char tolower_trans_tbl[256];