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Fix potentially incorrect errno usage

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errno may be reset by the previous call to redisLog, so capture
the original value for proper error reporting.
This commit is contained in:
Matt Stancliff 2014-03-24 13:21:15 -04:00 committed by antirez
parent 771f8ad0e7
commit c3510af1c0
1 changed files with 2 additions and 1 deletions
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src/redis.c
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@ -1461,6 +1461,7 @@ void adjustOpenFilesLimit(void) {
if (f < oldlimit) f = oldlimit; if (f < oldlimit) f = oldlimit;
if (f != maxfiles) { if (f != maxfiles) {
int old_maxclients = server.maxclients; int old_maxclients = server.maxclients;
int original_errno = errno;
server.maxclients = f-REDIS_MIN_RESERVED_FDS; server.maxclients = f-REDIS_MIN_RESERVED_FDS;
if (server.maxclients < 1) { if (server.maxclients < 1) {
redisLog(REDIS_WARNING,"Your current 'ulimit -n' " redisLog(REDIS_WARNING,"Your current 'ulimit -n' "
@ -1474,7 +1475,7 @@ void adjustOpenFilesLimit(void) {
old_maxclients, maxfiles); old_maxclients, maxfiles);
redisLog(REDIS_WARNING,"Redis can't set maximum open files " redisLog(REDIS_WARNING,"Redis can't set maximum open files "
"to %llu because of OS error: %s.", "to %llu because of OS error: %s.",
maxfiles, strerror(errno)); maxfiles, strerror(original_errno));
redisLog(REDIS_WARNING,"Current maximum open files is %llu. " redisLog(REDIS_WARNING,"Current maximum open files is %llu. "
"maxclients has been reduced to %d to compensate for " "maxclients has been reduced to %d to compensate for "
"low ulimit. " "low ulimit. "