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authorLennart Poettering <lennart@poettering.net>2014-03-18 19:22:43 +0100
committerLennart Poettering <lennart@poettering.net>2014-03-18 19:31:34 +0100
commit03e334a1c7dc8c20c38902aa039440763acc9b17 (patch)
treebc30b522de8ef9c251bf3ff2fe2d52c92dd8b1ea /src/shared/log.c
parent9459781ee66eb57709c8b8701701365ba60a9f1c (diff)
util: replace close_nointr_nofail() by a more useful safe_close()
safe_close() automatically becomes a NOP when a negative fd is passed, and returns -1 unconditionally. This makes it easy to write lines like this: fd = safe_close(fd); Which will close an fd if it is open, and reset the fd variable correctly. By making use of this new scheme we can drop a > 200 lines of code that was required to test for non-negative fds or to reset the closed fd variable afterwards.
Diffstat (limited to 'src/shared/log.c')
-rw-r--r--src/shared/log.c25
1 files changed, 5 insertions, 20 deletions
diff --git a/src/shared/log.c b/src/shared/log.c
index 5ea1e3a0e8..a4b3b68ef1 100644
--- a/src/shared/log.c
+++ b/src/shared/log.c
@@ -62,7 +62,7 @@ void log_close_console(void) {
if (getpid() == 1) {
if (console_fd >= 3)
- close_nointr_nofail(console_fd);
+ safe_close(console_fd);
console_fd = -1;
}
@@ -84,12 +84,7 @@ static int log_open_console(void) {
}
void log_close_kmsg(void) {
-
- if (kmsg_fd < 0)
- return;
-
- close_nointr_nofail(kmsg_fd);
- kmsg_fd = -1;
+ kmsg_fd = safe_close(kmsg_fd);
}
static int log_open_kmsg(void) {
@@ -105,12 +100,7 @@ static int log_open_kmsg(void) {
}
void log_close_syslog(void) {
-
- if (syslog_fd < 0)
- return;
-
- close_nointr_nofail(syslog_fd);
- syslog_fd = -1;
+ syslog_fd = safe_close(syslog_fd);
}
static int create_log_socket(int type) {
@@ -152,7 +142,7 @@ static int log_open_syslog(void) {
}
if (connect(syslog_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) {
- close_nointr_nofail(syslog_fd);
+ safe_close(syslog_fd);
/* Some legacy syslog systems still use stream
* sockets. They really shouldn't. But what can we
@@ -180,12 +170,7 @@ fail:
}
void log_close_journal(void) {
-
- if (journal_fd < 0)
- return;
-
- close_nointr_nofail(journal_fd);
- journal_fd = -1;
+ journal_fd = safe_close(journal_fd);
}
static int log_open_journal(void) {