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| author | Lennart Poettering <lennart@poettering.net> | 2016-05-05 22:24:36 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2016-05-05 22:24:36 +0200 |
| commit | fc2fffe7706ef269005bf4eef56570346c9ca3da (patch) | |
| tree | 9e89ac76ee15de498d97b0d03ed7d764b61874ce /src/login/pam_systemd.c | |
| parent | d8fdc62037b5b0a9fd603ad5efd6b49f956f86b5 (diff) | |
| download | systemd-fc2fffe7706ef269005bf4eef56570346c9ca3da.tar.gz | |
tree-wide: introduce new SOCKADDR_UN_LEN() macro, and use it everywhere
The macro determines the right length of a AF_UNIX "struct sockaddr_un" to pass to
connect() or bind(). It automatically figures out if the socket refers to an
abstract namespace socket, or a socket in the file system, and properly handles
the full length of the path field.
This macro is not only safer, but also simpler to use, than the usual
offsetof() + strlen() logic.
Diffstat (limited to 'src/login/pam_systemd.c')
| -rw-r--r-- | src/login/pam_systemd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/login/pam_systemd.c b/src/login/pam_systemd.c index 40e246bb06..98dc201340 100644 --- a/src/login/pam_systemd.c +++ b/src/login/pam_systemd.c @@ -150,7 +150,7 @@ static int get_seat_from_display(const char *display, const char **seat, uint32_ if (fd < 0) return -errno; - if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) + if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) return -errno; r = getpeercred(fd, &ucred); |