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-rw-r--r--src/shared/ask-password-api.c9
-rw-r--r--src/shared/dbus-loop.c19
-rw-r--r--src/shared/util.c21
-rw-r--r--src/shared/utmp-wtmp.c39
4 files changed, 35 insertions, 53 deletions
diff --git a/src/shared/ask-password-api.c b/src/shared/ask-password-api.c
index 8a0fb89a84..d091a22dea 100644
--- a/src/shared/ask-password-api.c
+++ b/src/shared/ask-password-api.c
@@ -255,14 +255,16 @@ static int create_socket(char **name) {
assert(name);
- if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
+ fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
+ if (fd < 0) {
log_error("socket() failed: %m");
return -errno;
}
zero(sa);
sa.un.sun_family = AF_UNIX;
- snprintf(sa.un.sun_path, sizeof(sa.un.sun_path)-1, "/run/systemd/ask-password/sck.%llu", random_ull());
+ snprintf(sa.un.sun_path, sizeof(sa.un.sun_path)-1,
+ "/run/systemd/ask-password/sck.%llu", random_ull());
u = umask(0177);
r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
@@ -280,7 +282,8 @@ static int create_socket(char **name) {
goto fail;
}
- if (!(c = strdup(sa.un.sun_path))) {
+ c = strdup(sa.un.sun_path);
+ if (!c) {
r = log_oom();
goto fail;
}
diff --git a/src/shared/dbus-loop.c b/src/shared/dbus-loop.c
index da0a00443a..fec8998bc1 100644
--- a/src/shared/dbus-loop.c
+++ b/src/shared/dbus-loop.c
@@ -44,7 +44,7 @@ typedef struct EpollData {
} EpollData;
static dbus_bool_t add_watch(DBusWatch *watch, void *data) {
- EpollData *e;
+ EpollData _cleanup_free_ *e = NULL;
struct epoll_event ev;
assert(watch);
@@ -63,10 +63,8 @@ static dbus_bool_t add_watch(DBusWatch *watch, void *data) {
if (epoll_ctl(PTR_TO_INT(data), EPOLL_CTL_ADD, e->fd, &ev) < 0) {
- if (errno != EEXIST) {
- free(e);
+ if (errno != EEXIST)
return FALSE;
- }
/* Hmm, bloody D-Bus creates multiple watches on the
* same fd. epoll() does not like that. As a dirty
@@ -74,14 +72,11 @@ static dbus_bool_t add_watch(DBusWatch *watch, void *data) {
* one we can safely add to the epoll(). */
e->fd = dup(e->fd);
- if (e->fd < 0) {
- free(e);
+ if (e->fd < 0)
return FALSE;
- }
if (epoll_ctl(PTR_TO_INT(data), EPOLL_CTL_ADD, e->fd, &ev) < 0) {
close_nointr_nofail(e->fd);
- free(e);
return FALSE;
}
@@ -89,12 +84,13 @@ static dbus_bool_t add_watch(DBusWatch *watch, void *data) {
}
dbus_watch_set_data(watch, e, NULL);
+ e = NULL; /* prevent freeing */
return TRUE;
}
static void remove_watch(DBusWatch *watch, void *data) {
- EpollData *e;
+ EpollData _cleanup_free_ *e = NULL;
assert(watch);
@@ -106,8 +102,6 @@ static void remove_watch(DBusWatch *watch, void *data) {
if (e->fd_is_dupped)
close_nointr_nofail(e->fd);
-
- free(e);
}
static void toggle_watch(DBusWatch *watch, void *data) {
@@ -186,7 +180,7 @@ fail:
}
static void remove_timeout(DBusTimeout *timeout, void *data) {
- EpollData *e;
+ EpollData _cleanup_free_ *e = NULL;
assert(timeout);
@@ -196,7 +190,6 @@ static void remove_timeout(DBusTimeout *timeout, void *data) {
assert_se(epoll_ctl(PTR_TO_INT(data), EPOLL_CTL_DEL, e->fd, NULL) >= 0);
close_nointr_nofail(e->fd);
- free(e);
}
static void toggle_timeout(DBusTimeout *timeout, void *data) {
diff --git a/src/shared/util.c b/src/shared/util.c
index 760013c1fb..b516b9b053 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -1873,18 +1873,18 @@ int flush_fd(int fd) {
ssize_t l;
int r;
- if ((r = poll(&pollfd, 1, 0)) < 0) {
-
+ r = poll(&pollfd, 1, 0);
+ if (r < 0) {
if (errno == EINTR)
continue;
return -errno;
- }
- if (r == 0)
+ } else if (r == 0)
return 0;
- if ((l = read(fd, buf, sizeof(buf))) < 0) {
+ l = read(fd, buf, sizeof(buf));
+ if (l < 0) {
if (errno == EINTR)
continue;
@@ -1893,9 +1893,7 @@ int flush_fd(int fd) {
return 0;
return -errno;
- }
-
- if (l <= 0)
+ } else if (l == 0)
return 0;
}
}
@@ -2068,10 +2066,12 @@ fail:
}
int release_terminal(void) {
- int r = 0, fd;
+ int r = 0;
struct sigaction sa_old, sa_new;
+ int _cleanup_close_ fd;
- if ((fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_NDELAY|O_CLOEXEC)) < 0)
+ fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_NDELAY|O_CLOEXEC);
+ if (fd < 0)
return -errno;
/* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed
@@ -2087,7 +2087,6 @@ int release_terminal(void) {
assert_se(sigaction(SIGHUP, &sa_old, NULL) == 0);
- close_nointr_nofail(fd);
return r;
}
diff --git a/src/shared/utmp-wtmp.c b/src/shared/utmp-wtmp.c
index c9b986fc08..3494b56908 100644
--- a/src/shared/utmp-wtmp.c
+++ b/src/shared/utmp-wtmp.c
@@ -292,7 +292,7 @@ int utmp_put_runlevel(int runlevel, int previous) {
#define TIMEOUT_MSEC 50
static int write_to_terminal(const char *tty, const char *message) {
- int fd, r;
+ int _cleanup_close_ fd = -1;
const char *p;
size_t left;
usec_t end;
@@ -300,14 +300,10 @@ static int write_to_terminal(const char *tty, const char *message) {
assert(tty);
assert(message);
- if ((fd = open(tty, O_WRONLY|O_NDELAY|O_NOCTTY|O_CLOEXEC)) < 0)
+ fd = open(tty, O_WRONLY|O_NDELAY|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0 || !isatty(fd))
return -errno;
- if (!isatty(fd)) {
- r = -errno;
- goto finish;
- }
-
p = message;
left = strlen(message);
@@ -321,30 +317,26 @@ static int write_to_terminal(const char *tty, const char *message) {
t = now(CLOCK_MONOTONIC);
- if (t >= end) {
- r = -ETIME;
- goto finish;
- }
+ if (t >= end)
+ return -ETIME;
zero(pollfd);
pollfd.fd = fd;
pollfd.events = POLLOUT;
- if ((k = poll(&pollfd, 1, (end - t) / USEC_PER_MSEC)) < 0)
+ k = poll(&pollfd, 1, (end - t) / USEC_PER_MSEC);
+ if (k < 0)
return -errno;
- if (k <= 0) {
- r = -ETIME;
- goto finish;
- }
-
- if ((n = write(fd, p, left)) < 0) {
+ if (k == 0)
+ return -ETIME;
+ n = write(fd, p, left);
+ if (n < 0) {
if (errno == EAGAIN)
continue;
- r = -errno;
- goto finish;
+ return -errno;
}
assert((size_t) n <= left);
@@ -353,12 +345,7 @@ static int write_to_terminal(const char *tty, const char *message) {
left -= n;
}
- r = 0;
-
-finish:
- close_nointr_nofail(fd);
-
- return r;
+ return 0;
}
int utmp_wall(const char *message, bool (*match_tty)(const char *tty)) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-02 10:47:43 +0000