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-rw-r--r--src/libudev/log.c220
-rw-r--r--src/libudev/log.h33
2 files changed, 157 insertions, 96 deletions
diff --git a/src/libudev/log.c b/src/libudev/log.c
index 5c07b626c2..778c0e2ea9 100644
--- a/src/libudev/log.c
+++ b/src/libudev/log.c
@@ -129,16 +129,15 @@ static int create_log_socket(int type) {
}
static int log_open_syslog(void) {
- union sockaddr_union sa;
int r;
+ union sockaddr_union sa = {
+ .un.sun_family = AF_UNIX,
+ .un.sun_path = "/dev/log",
+ };
if (syslog_fd >= 0)
return 0;
- zero(sa);
- sa.un.sun_family = AF_UNIX;
- strncpy(sa.un.sun_path, "/dev/log", sizeof(sa.un.sun_path));
-
syslog_fd = create_log_socket(SOCK_DGRAM);
if (syslog_fd < 0) {
r = syslog_fd;
@@ -183,7 +182,10 @@ void log_close_journal(void) {
}
static int log_open_journal(void) {
- union sockaddr_union sa;
+ union sockaddr_union sa = {
+ .un.sun_family = AF_UNIX,
+ .un.sun_path = "/run/systemd/journal/socket",
+ };
int r;
if (journal_fd >= 0)
@@ -195,10 +197,6 @@ static int log_open_journal(void) {
goto fail;
}
- zero(sa);
- sa.un.sun_family = AF_UNIX;
- strncpy(sa.un.sun_path, "/run/systemd/journal/socket", sizeof(sa.un.sun_path));
-
if (connect(journal_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) {
r = -errno;
goto fail;
@@ -308,10 +306,12 @@ static int write_to_console(
const char*file,
int line,
const char *func,
+ const char *object_name,
+ const char *object,
const char *buffer) {
char location[64];
- struct iovec iovec[5];
+ struct iovec iovec[5] = {};
unsigned n = 0;
bool highlight;
@@ -320,8 +320,6 @@ static int write_to_console(
highlight = LOG_PRI(level) <= LOG_ERR && show_color;
- zero(iovec);
-
if (show_location) {
snprintf(location, sizeof(location), "(%s:%u) ", file, line);
char_array_0(location);
@@ -346,11 +344,16 @@ static int write_to_syslog(
const char*file,
int line,
const char *func,
+ const char *object_name,
+ const char *object,
const char *buffer) {
char header_priority[16], header_time[64], header_pid[16];
- struct iovec iovec[5];
- struct msghdr msghdr;
+ struct iovec iovec[5] = {};
+ struct msghdr msghdr = {
+ .msg_iov = iovec,
+ .msg_iovlen = ELEMENTSOF(iovec),
+ };
time_t t;
struct tm *tm;
@@ -361,7 +364,8 @@ static int write_to_syslog(
char_array_0(header_priority);
t = (time_t) (now(CLOCK_REALTIME) / USEC_PER_SEC);
- if (!(tm = localtime(&t)))
+ tm = localtime(&t);
+ if (!tm)
return -EINVAL;
if (strftime(header_time, sizeof(header_time), "%h %e %T ", tm) <= 0)
@@ -370,7 +374,6 @@ static int write_to_syslog(
snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) getpid());
char_array_0(header_pid);
- zero(iovec);
IOVEC_SET_STRING(iovec[0], header_priority);
IOVEC_SET_STRING(iovec[1], header_time);
IOVEC_SET_STRING(iovec[2], program_invocation_short_name);
@@ -381,10 +384,6 @@ static int write_to_syslog(
if (syslog_is_stream)
iovec[4].iov_len++;
- zero(msghdr);
- msghdr.msg_iov = iovec;
- msghdr.msg_iovlen = ELEMENTSOF(iovec);
-
for (;;) {
ssize_t n;
@@ -407,10 +406,12 @@ static int write_to_kmsg(
const char*file,
int line,
const char *func,
+ const char *object_name,
+ const char *object,
const char *buffer) {
char header_priority[16], header_pid[16];
- struct iovec iovec[5];
+ struct iovec iovec[5] = {};
if (kmsg_fd < 0)
return 0;
@@ -421,7 +422,6 @@ static int write_to_kmsg(
snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) getpid());
char_array_0(header_pid);
- zero(iovec);
IOVEC_SET_STRING(iovec[0], header_priority);
IOVEC_SET_STRING(iovec[1], program_invocation_short_name);
IOVEC_SET_STRING(iovec[2], header_pid);
@@ -434,43 +434,61 @@ static int write_to_kmsg(
return 1;
}
+static int log_do_header(char *header, size_t size,
+ int level,
+ const char *file, int line, const char *func,
+ const char *object_name, const char *object) {
+ snprintf(header, size,
+ "PRIORITY=%i\n"
+ "SYSLOG_FACILITY=%i\n"
+ "%s%.*s%s"
+ "%s%.*i%s"
+ "%s%.*s%s"
+ "%s%.*s%s"
+ "SYSLOG_IDENTIFIER=%s\n",
+ LOG_PRI(level),
+ LOG_FAC(level),
+ file ? "CODE_FILE=" : "",
+ file ? LINE_MAX : 0, file, /* %.0s means no output */
+ file ? "\n" : "",
+ line ? "CODE_LINE=" : "",
+ line ? 1 : 0, line, /* %.0d means no output too, special case for 0 */
+ line ? "\n" : "",
+ func ? "CODE_FUNCTION=" : "",
+ func ? LINE_MAX : 0, func,
+ func ? "\n" : "",
+ object ? object_name : "",
+ object ? LINE_MAX : 0, object, /* %.0s means no output */
+ object ? "\n" : "",
+ program_invocation_short_name);
+ header[size - 1] = '\0';
+ return 0;
+}
+
static int write_to_journal(
int level,
const char*file,
int line,
const char *func,
+ const char *object_name,
+ const char *object,
const char *buffer) {
char header[LINE_MAX];
- struct iovec iovec[3];
- struct msghdr mh;
+ struct iovec iovec[4] = {};
+ struct msghdr mh = {};
if (journal_fd < 0)
return 0;
- snprintf(header, sizeof(header),
- "PRIORITY=%i\n"
- "SYSLOG_FACILITY=%i\n"
- "CODE_FILE=%s\n"
- "CODE_LINE=%i\n"
- "CODE_FUNCTION=%s\n"
- "SYSLOG_IDENTIFIER=%s\n"
- "MESSAGE=",
- LOG_PRI(level),
- LOG_FAC(level),
- file,
- line,
- func,
- program_invocation_short_name);
-
- char_array_0(header);
+ log_do_header(header, sizeof(header), level,
+ file, line, func, object_name, object);
- zero(iovec);
IOVEC_SET_STRING(iovec[0], header);
- IOVEC_SET_STRING(iovec[1], buffer);
- IOVEC_SET_STRING(iovec[2], "\n");
+ IOVEC_SET_STRING(iovec[1], "MESSAGE=");
+ IOVEC_SET_STRING(iovec[2], buffer);
+ IOVEC_SET_STRING(iovec[3], "\n");
- zero(mh);
mh.msg_iov = iovec;
mh.msg_iovlen = ELEMENTSOF(iovec);
@@ -485,6 +503,8 @@ static int log_dispatch(
const char*file,
int line,
const char *func,
+ const char *object_name,
+ const char *object,
char *buffer) {
int r = 0;
@@ -512,7 +532,8 @@ static int log_dispatch(
log_target == LOG_TARGET_JOURNAL_OR_KMSG ||
log_target == LOG_TARGET_JOURNAL) {
- k = write_to_journal(level, file, line, func, buffer);
+ k = write_to_journal(level, file, line, func,
+ object_name, object, buffer);
if (k < 0) {
if (k != -EAGAIN)
log_close_journal();
@@ -524,7 +545,8 @@ static int log_dispatch(
if (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
log_target == LOG_TARGET_SYSLOG) {
- k = write_to_syslog(level, file, line, func, buffer);
+ k = write_to_syslog(level, file, line, func,
+ object_name, object, buffer);
if (k < 0) {
if (k != -EAGAIN)
log_close_syslog();
@@ -540,7 +562,8 @@ static int log_dispatch(
log_target == LOG_TARGET_JOURNAL_OR_KMSG ||
log_target == LOG_TARGET_KMSG)) {
- k = write_to_kmsg(level, file, line, func, buffer);
+ k = write_to_kmsg(level, file, line, func,
+ object_name, object, buffer);
if (k < 0) {
log_close_kmsg();
log_open_console();
@@ -549,7 +572,8 @@ static int log_dispatch(
}
if (k <= 0) {
- k = write_to_console(level, file, line, func, buffer);
+ k = write_to_console(level, file, line, func,
+ object_name, object, buffer);
if (k < 0)
return k;
}
@@ -567,18 +591,14 @@ int log_dump_internal(
const char *func,
char *buffer) {
- int saved_errno, r;
+ PROTECT_ERRNO;
/* This modifies the buffer... */
if (_likely_(LOG_PRI(level) > log_max_level))
return 0;
- saved_errno = errno;
- r = log_dispatch(level, file, line, func, buffer);
- errno = saved_errno;
-
- return r;
+ return log_dispatch(level, file, line, func, NULL, NULL, buffer);
}
int log_metav(
@@ -589,20 +609,16 @@ int log_metav(
const char *format,
va_list ap) {
+ PROTECT_ERRNO;
char buffer[LINE_MAX];
- int saved_errno, r;
if (_likely_(LOG_PRI(level) > log_max_level))
return 0;
- saved_errno = errno;
vsnprintf(buffer, sizeof(buffer), format, ap);
char_array_0(buffer);
- r = log_dispatch(level, file, line, func, buffer);
- errno = saved_errno;
-
- return r;
+ return log_dispatch(level, file, line, func, NULL, NULL, buffer);
}
int log_meta(
@@ -622,6 +638,49 @@ int log_meta(
return r;
}
+int log_metav_object(
+ int level,
+ const char*file,
+ int line,
+ const char *func,
+ const char *object_name,
+ const char *object,
+ const char *format,
+ va_list ap) {
+
+ PROTECT_ERRNO;
+ char buffer[LINE_MAX];
+
+ if (_likely_(LOG_PRI(level) > log_max_level))
+ return 0;
+
+ vsnprintf(buffer, sizeof(buffer), format, ap);
+ char_array_0(buffer);
+
+ return log_dispatch(level, file, line, func,
+ object_name, object, buffer);
+}
+
+int log_meta_object(
+ int level,
+ const char*file,
+ int line,
+ const char *func,
+ const char *object_name,
+ const char *object,
+ const char *format, ...) {
+
+ int r;
+ va_list ap;
+
+ va_start(ap, format);
+ r = log_metav_object(level, file, line, func,
+ object_name, object, format, ap);
+ va_end(ap);
+
+ return r;
+}
+
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat-nonliteral"
_noreturn_ static void log_assert(const char *text, const char *file, int line, const char *func, const char *format) {
@@ -632,7 +691,7 @@ _noreturn_ static void log_assert(const char *text, const char *file, int line,
char_array_0(buffer);
log_abort_msg = buffer;
- log_dispatch(LOG_CRIT, file, line, func, buffer);
+ log_dispatch(LOG_CRIT, file, line, func, NULL, NULL, buffer);
abort();
}
#pragma GCC diagnostic pop
@@ -657,7 +716,7 @@ int log_struct_internal(
const char *func,
const char *format, ...) {
- int saved_errno;
+ PROTECT_ERRNO;
va_list ap;
int r;
@@ -670,37 +729,22 @@ int log_struct_internal(
if ((level & LOG_FACMASK) == 0)
level = log_facility | LOG_PRI(level);
- saved_errno = errno;
-
if ((log_target == LOG_TARGET_AUTO ||
log_target == LOG_TARGET_JOURNAL_OR_KMSG ||
log_target == LOG_TARGET_JOURNAL) &&
journal_fd >= 0) {
char header[LINE_MAX];
- struct iovec iovec[17];
+ struct iovec iovec[17] = {};
unsigned n = 0, i;
- struct msghdr mh;
- const char nl = '\n';
+ struct msghdr mh = {
+ .msg_iov = iovec,
+ };
+ static const char nl = '\n';
/* If the journal is available do structured logging */
-
- snprintf(header, sizeof(header),
- "PRIORITY=%i\n"
- "SYSLOG_FACILITY=%i\n"
- "CODE_FILE=%s\n"
- "CODE_LINE=%i\n"
- "CODE_FUNCTION=%s\n"
- "SYSLOG_IDENTIFIER=%s\n",
- LOG_PRI(level),
- LOG_FAC(level),
- file,
- line,
- func,
- program_invocation_short_name);
- char_array_0(header);
-
- zero(iovec);
+ log_do_header(header, sizeof(header), level,
+ file, line, func, NULL, NULL);
IOVEC_SET_STRING(iovec[n++], header);
va_start(ap, format);
@@ -733,8 +777,6 @@ int log_struct_internal(
format = va_arg(ap, char *);
}
- zero(mh);
- mh.msg_iov = iovec;
mh.msg_iovlen = n;
if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) < 0)
@@ -774,12 +816,12 @@ int log_struct_internal(
va_end(ap);
if (found)
- r = log_dispatch(level, file, line, func, buf + 8);
+ r = log_dispatch(level, file, line, func,
+ NULL, NULL, buf + 8);
else
r = -EINVAL;
}
- errno = saved_errno;
return r;
}
diff --git a/src/libudev/log.h b/src/libudev/log.h
index fd2285cb61..d47983c0da 100644
--- a/src/libudev/log.h
+++ b/src/libudev/log.h
@@ -55,8 +55,8 @@ void log_show_location(bool b);
int log_show_color_from_string(const char *e);
int log_show_location_from_string(const char *e);
-LogTarget log_get_target(void);
-int log_get_max_level(void);
+LogTarget log_get_target(void) _pure_;
+int log_get_max_level(void) _pure_;
int log_open(void);
void log_close(void);
@@ -80,14 +80,33 @@ int log_metav(
int line,
const char *func,
const char *format,
- va_list ap);
+ va_list ap) _printf_attr_(5,0);
+
+int log_meta_object(
+ int level,
+ const char*file,
+ int line,
+ const char *func,
+ const char *object_name,
+ const char *object,
+ const char *format, ...) _printf_attr_(7,8);
+
+int log_metav_object(
+ int level,
+ const char*file,
+ int line,
+ const char *func,
+ const char *object_name,
+ const char *object,
+ const char *format,
+ va_list ap) _printf_attr_(7,0);
int log_struct_internal(
int level,
const char *file,
int line,
const char *func,
- const char *format, ...) _sentinel_;
+ const char *format, ...) _printf_attr_(5,0) _sentinel_;
int log_oom_internal(
const char *file,
@@ -129,9 +148,9 @@ _noreturn_ void log_assert_failed_unreachable(
/* This modifies the buffer passed! */
#define log_dump(level, buffer) log_dump_internal(level, __FILE__, __LINE__, __func__, buffer)
-bool log_on_console(void);
+bool log_on_console(void) _pure_;
-const char *log_target_to_string(LogTarget target);
-LogTarget log_target_from_string(const char *s);
+const char *log_target_to_string(LogTarget target) _const_;
+LogTarget log_target_from_string(const char *s) _pure_;
#define MESSAGE_ID(x) "MESSAGE_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(x)
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-23 01:28:53 +0000