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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2013-03-24 19:59:00 -0400
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2013-04-05 19:50:57 -0400
commitb92bea5d2a9481de69bb627a7b442a9f58fca43d (patch)
treed43f5e340014d5c3ce723eabb60cd74e3dd20a18 /src/tty-ask-password-agent/tty-ask-password-agent.c
parent8c62ecf1a99ab4a3f69cb81be38715c504ef5723 (diff)
Use initalization instead of explicit zeroing
Before, we would initialize many fields twice: first by filling the structure with zeros, and then a second time with the real values. We can let the compiler do the job for us, avoiding one copy. A downside of this patch is that text gets slightly bigger. This is because all zero() calls are effectively inlined: $ size build/.libs/systemd text data bss dec hex filename before 897737 107300 2560 1007597 f5fed build/.libs/systemd after 897873 107300 2560 1007733 f6075 build/.libs/systemd … actually less than 1‰. A few asserts that the parameter is not null had to be removed. I don't think this changes much, because first, it is quite unlikely for the assert to fail, and second, an immediate SEGV is almost as good as an assert.
Diffstat (limited to 'src/tty-ask-password-agent/tty-ask-password-agent.c')
-rw-r--r--src/tty-ask-password-agent/tty-ask-password-agent.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/src/tty-ask-password-agent/tty-ask-password-agent.c b/src/tty-ask-password-agent/tty-ask-password-agent.c
index 99a626c6c5..3f5706ee3c 100644
--- a/src/tty-ask-password-agent/tty-ask-password-agent.c
+++ b/src/tty-ask-password-agent/tty-ask-password-agent.c
@@ -60,11 +60,11 @@ static int ask_password_plymouth(
char ***_passphrases) {
int fd = -1, notify = -1;
- union sockaddr_union sa;
+ union sockaddr_union sa = {};
char *packet = NULL;
ssize_t k;
int r, n;
- struct pollfd pollfd[2];
+ struct pollfd pollfd[2] = {};
char buffer[LINE_MAX];
size_t p = 0;
enum {
@@ -91,7 +91,6 @@ static int ask_password_plymouth(
goto finish;
}
- zero(sa);
sa.sa.sa_family = AF_UNIX;
strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1);
if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
@@ -116,7 +115,6 @@ static int ask_password_plymouth(
goto finish;
}
- zero(pollfd);
pollfd[POLL_SOCKET].fd = fd;
pollfd[POLL_SOCKET].events = POLLIN;
pollfd[POLL_INOTIFY].fd = notify;
@@ -325,7 +323,7 @@ static int parse_password(const char *filename, char **wall) {
union {
struct sockaddr sa;
struct sockaddr_un un;
- } sa;
+ } sa = {};
size_t packet_length = 0;
assert(arg_action == ACTION_QUERY ||
@@ -410,7 +408,6 @@ static int parse_password(const char *filename, char **wall) {
goto finish;
}
- zero(sa);
sa.un.sun_family = AF_UNIX;
strncpy(sa.un.sun_path, socket_name, sizeof(sa.un.sun_path));
@@ -563,7 +560,7 @@ static int watch_passwords(void) {
};
int notify = -1, signal_fd = -1, tty_block_fd = -1;
- struct pollfd pollfd[_FD_MAX];
+ struct pollfd pollfd[_FD_MAX] = {};
sigset_t mask;
int r;
@@ -591,7 +588,6 @@ static int watch_passwords(void) {
goto finish;
}
- zero(pollfd);
pollfd[FD_INOTIFY].fd = notify;
pollfd[FD_INOTIFY].events = POLLIN;
pollfd[FD_SIGNAL].fd = signal_fd;