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check for connect failure in syslog log opening

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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)