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socket_address_listen: do not rely on errno (2)

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We'd still use the invalid errno for a return value. Rework
the code to simply return the right error right away.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2016-03-10 09:24:08 -05:00
parent 79c96fd204
commit 825546ef76
1 changed files with 15 additions and 19 deletions
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26
src/basic/socket-label.c
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@ -23,7 +23,6 @@
#include <stddef.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <unistd.h>
@ -35,6 +34,7 @@
#include "mkdir.h"
#include "selinux-util.h"
#include "socket-util.h"
#include "umask-util.h"
int socket_address_listen(
const SocketAddress *a,
@ -112,28 +112,24 @@ int socket_address_listen(
return -errno;
if (socket_address_family(a) == AF_UNIX && a->sockaddr.un.sun_path[0] != 0) {
mode_t old_mask;
/* Create parents */
mkdir_parents_label(a->sockaddr.un.sun_path, directory_mode);
(void) mkdir_parents_label(a->sockaddr.un.sun_path, directory_mode);
/* Enforce the right access mode for the socket */
old_mask = umask(~ socket_mode);
RUN_WITH_UMASK(~socket_mode) {
r = mac_selinux_bind(fd, &a->sockaddr.sa, a->size);
if (r == -EADDRINUSE) {
/* Unlink and try again */
unlink(a->sockaddr.un.sun_path);
r = bind(fd, &a->sockaddr.sa, a->size);
}
umask(old_mask);
} else
r = bind(fd, &a->sockaddr.sa, a->size);
if (r < 0)
if (bind(fd, &a->sockaddr.sa, a->size) < 0)
return -errno;
} else if (r < 0)
return r;
}
} else {
if (bind(fd, &a->sockaddr.sa, a->size) < 0)
return -errno;
}
if (socket_address_can_accept(a))
if (listen(fd, backlog) < 0)