dmesg: add -u and -k options

 -u  : print kernel messages
 -k  : print userspace message

The options could be mixed together or with --facility option too.

Signed-off-by: Karel Zak <kzak@redhat.com>

2 files changed, 19 insertions, 1 deletions

diff --git a/sys-utils/dmesg.1 b/sys-utils/dmesg.1
index cb0e71677..dd2536211 100644
--- a/sys-utils/dmesg.1
+++ b/sys-utils/dmesg.1
@@ -46,6 +46,8 @@ will print messages from system daemons only. For all supported facilities see
 output.
 .IP "\fB\-h, \-\-help\fP"
 Print a help text and exit.
+.IP "\fB\-k, \-\-kernel\fP"
+Print kernel messages.
 .IP "\fB\-l, \-\-level \fIlist\fP"
 Restrict output to defined (comma separated) list of levels. For example
 .sp
@@ -90,6 +92,8 @@ to query the kernel ring buffer.  This is 16392 by default.
 at first, 8192 since 1.3.54, 16384 since 2.1.113.)
 If you have set the kernel buffer to be larger than the default
 then this option can be used to view the entire buffer.
+.IP "\fB\-u, \-\-userspace\fP"
+Print userspace messages.
 .IP "\fB\-V, \-\-version\fP"
 Output version information and exit.
 .IP "\fB\-x, \-\-decode\fP"
diff --git a/sys-utils/dmesg.c b/sys-utils/dmesg.c
index 863b48aac..dc074b37d 100644
--- a/sys-utils/dmesg.c
+++ b/sys-utils/dmesg.c
@@ -115,10 +115,12 @@ static void __attribute__((__noreturn__)) usage(FILE *out)
 		" -e, --console-on          enable printing messages to console\n"
 		" -f, --facility=LIST       restrict output to defined facilities\n"
 		" -h, --help                display this help and exit\n"
+		" -k, --kernel              display kernel messages\n"
 		" -l, --level=LIST          restrict output to defined levels\n"
 		" -n, --console-level=LEVEL set level of messages printed to console\n"
 		" -r, --raw                 print the raw message buffer\n"
 		" -s, --buffer-size=SIZE    buffer size to query the kernel ring buffer\n"
+		" -u, --userspace           display userspace messages\n"
 		" -V, --version             output version information and exit\n"
 		" -x, --decode              decode facility and level to readable string\n\n"));
 
@@ -478,9 +480,11 @@ int main(int argc, char *argv[])
 		{ "decode",        no_argument,	      NULL, 'x' },
 		{ "facility",      required_argument, NULL, 'f' },
 		{ "help",          no_argument,	      NULL, 'h' },
+		{ "kernel",        no_argument,       NULL, 'k' },
 		{ "level",         required_argument, NULL, 'l' },
 		{ "raw",           no_argument,       NULL, 'r' },
 		{ "read-clear",    no_argument,	      NULL, 'c' },
+		{ "userspace",     no_argument,       NULL, 'u' },
 		{ "version",       no_argument,	      NULL, 'V' },
 		{ NULL,	           0, NULL, 0 }
 	};
@@ -489,7 +493,7 @@ int main(int argc, char *argv[])
 	bindtextdomain(PACKAGE, LOCALEDIR);
 	textdomain(PACKAGE);
 
-	while ((c = getopt_long(argc, argv, "Ccdef:hl:n:rs:Vx", longopts, NULL)) != -1) {
+	while ((c = getopt_long(argc, argv, "Ccdef:hkl:n:rs:uVx", longopts, NULL)) != -1) {
 
 		if (cmd != -1 && strchr("Ccnde", c))
 			errx(EXIT_FAILURE, "%s %s",
@@ -516,6 +520,10 @@ int main(int argc, char *argv[])
 		case 'h':
 			usage(stdout);
 			break;
+		case 'k':
+			flags |= DMESG_FL_FACILITY;
+			setbit(facilities, FAC_BASE(LOG_KERN));
+			break;
 		case 'l':
 			flags |= DMESG_FL_LEVEL;
 			list_to_bitarray(optarg, parse_level, levels);
@@ -533,6 +541,11 @@ int main(int argc, char *argv[])
 			if (bufsize < 4096)
 				bufsize = 4096;
 			break;
+		case 'u':
+			flags |= DMESG_FL_FACILITY;
+			for (n = 1; n < ARRAY_SIZE(facility_names); n++)
+				setbit(facilities, n);
+			break;
 		case 'V':
 			printf(_("%s from %s\n"), program_invocation_short_name,
 						  PACKAGE_STRING);
@@ -547,6 +560,7 @@ int main(int argc, char *argv[])
 	}
 	argc -= optind;
 	argv += optind;
+	n = 0;
 
 	if (argc > 1)
 		usage(stderr);