src/lib/unix-socket-create.c

/* Copyright (c) 2005-2018 Dovecot authors, see the included COPYING file */

#include "lib.h"
#include "net.h"
#include "unix-socket-create.h"

#include <unistd.h>
#include <sys/stat.h>

int unix_socket_create(const char *path, int mode,
               uid_t uid, gid_t gid, int backlog)
{
    mode_t old_umask;
    int fd;

    old_umask = umask(0777 ^ mode);
    fd = net_listen_unix_unlink_stale(path, backlog);
    umask(old_umask);

    if (fd < 0) {
        i_error("net_listen_unix(%s) failed: %m", path);
        return -1;
    }

    if (uid != (uid_t)-1 || gid != (gid_t)-1) {
        /* set correct permissions */
        if (chown(path, uid, gid) < 0) {
            i_error("chown(%s, %s, %s) failed: %m",
                path, dec2str(uid), dec2str(gid));
            i_close_fd(&fd);
            return -1;
        }
    }
    return fd;
}