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check for connect failure in syslog log opening 

based on patch by Dima Krasner, with minor improvements for code size.
connect can fail if there is no listening syslogd, in which case a
useless socket was kept open, preventing subsequent syslog call from
attempting to connect again.
This commit is contained in:
Rich Felker 2015-01-09 00:09:54 -05:00
parent 11ac2a6e81
commit c574321d75
1 changed files with 6 additions and 2 deletions
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8
src/misc/syslog.c
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@ -46,8 +46,12 @@ void closelog(void)
static void __openlog()
{
log_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
if (log_fd >= 0) connect(log_fd, (void *)&log_addr, sizeof log_addr);
int fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
if (fd < 0) return;
if (connect(fd, (void *)&log_addr, sizeof log_addr) < 0)
close(fd);
else
log_fd = fd;
}
void openlog(const char *ident, int opt, int facility)