[Audit-test-developer] [PATCH 26/46] utils/bin/do_*kill: support kill -0 (pid existence check)

[Jiri J. <jja...@re...>]

Signed-off-by: Jiri Jaburek <jja...@re...>
---
 audit-test/utils/bin/do_kill.c   | 17 +++++++++++------
 audit-test/utils/bin/do_tgkill.c | 13 +++++++++----
 audit-test/utils/bin/do_tkill.c  | 13 +++++++++----
 3 files changed, 29 insertions(+), 14 deletions(-)

diff --git a/audit-test/utils/bin/do_kill.c b/audit-test/utils/bin/do_kill.c
index b52a999..c811679 100644
--- a/audit-test/utils/bin/do_kill.c
+++ b/audit-test/utils/bin/do_kill.c
@@ -22,8 +22,8 @@ int main(int argc, char **argv)
     int pid, signum;
 
     if (argc < 3) {
-	fprintf(stderr, "Usage:\n%s <pid> <sigkill|sigstop|sigusr1> [group]\n", argv[0]);
-	return 1;
+        fprintf(stderr, "Usage:\n%s <pid> <sigkill|sigstop|sigusr1|pidcheck> [group]\n", argv[0]);
+        return 1;
     }
     pid = atoi(argv[1]);
 
@@ -33,17 +33,22 @@ int main(int argc, char **argv)
 	signum = SIGSTOP;
     } else if (!strcmp(argv[2], "sigusr1")) {
 	signum = SIGUSR1;
+    } else if (!strcmp(argv[2], "pidcheck")) {
+       /* "If  sig  is 0, then no signal is sent, but error checking is still
+        * performed; this can be used to check for the existence of a process ID
+        * or process group ID." */
+        signum = 0;
     } else {
-	fprintf(stderr, "Usage:\n%s <pid> <sigkill|sigstop|sigusr1> [group]\n", argv[0]);
-	return 1;
+        fprintf(stderr, "unsupported signal\n");
+        return 1;
     }
 
     if (argc > 3) {
 	if (!strcmp(argv[3], "group"))
 	    pid = -pid;
 	else {
-	    fprintf(stderr, "Usage:\n%s <pid> <sigkill|sigstop|sigusr1> [group]\n", argv[0]);
-	    return 1;
+            fprintf(stderr, "invalid argument\n");
+            return 1;
 	}
     }
 
diff --git a/audit-test/utils/bin/do_tgkill.c b/audit-test/utils/bin/do_tgkill.c
index b781a35..1d7db5c 100644
--- a/audit-test/utils/bin/do_tgkill.c
+++ b/audit-test/utils/bin/do_tgkill.c
@@ -22,8 +22,8 @@ int main(int argc, char **argv)
     int pid, signum;
 
     if (argc < 3) {
-	fprintf(stderr, "Usage:\n%s <pid> <sigkill|sigstop|sigusr1>\n", argv[0]);
-	return 1;
+        fprintf(stderr, "Usage:\n%s <pid> <sigkill|sigstop|sigusr1|pidcheck>\n", argv[0]);
+        return 1;
     }
     pid = atoi(argv[1]);
 
@@ -33,9 +33,14 @@ int main(int argc, char **argv)
 	signum = SIGSTOP;
     } else if (!strcmp(argv[2], "sigusr1")) {
 	signum = SIGUSR1;
+    } else if (!strcmp(argv[2], "pidcheck")) {
+       /* "If  sig  is 0, then no signal is sent, but error checking is still
+        * performed; this can be used to check for the existence of a process ID
+        * or process group ID." */
+        signum = 0;
     } else {
-	fprintf(stderr, "Usage:\n%s <pid> <sigkill|sigstop|sigusr1>\n", argv[0]);
-	return 1;
+        fprintf(stderr, "unsupported signal\n");
+        return 1;
     }
 
     errno = 0;
diff --git a/audit-test/utils/bin/do_tkill.c b/audit-test/utils/bin/do_tkill.c
index fd3ebd2..51b25be 100644
--- a/audit-test/utils/bin/do_tkill.c
+++ b/audit-test/utils/bin/do_tkill.c
@@ -22,8 +22,8 @@ int main(int argc, char **argv)
     int pid, signum;
 
     if (argc < 3) {
-	fprintf(stderr, "Usage:\n%s <pid> <sigkill|sigstop|sigusr1>\n", argv[0]);
-	return 1;
+        fprintf(stderr, "Usage:\n%s <pid> <sigkill|sigstop|sigusr1|pidcheck>\n", argv[0]);
+        return 1;
     }
     pid = atoi(argv[1]);
 
@@ -33,9 +33,14 @@ int main(int argc, char **argv)
 	signum = SIGSTOP;
     } else if (!strcmp(argv[2], "sigusr1")) {
 	signum = SIGUSR1;
+    } else if (!strcmp(argv[2], "pidcheck")) {
+       /* "If  sig  is 0, then no signal is sent, but error checking is still
+        * performed; this can be used to check for the existence of a process ID
+        * or process group ID." */
+        signum = 0;
     } else {
-	fprintf(stderr, "Usage:\n%s <pid> <sigkill|sigstop|sigusr1>\n", argv[0]);
-	return 1;
+        fprintf(stderr, "unsupported signal\n");
+        return 1;
     }
 
     /* use syscall() as no library routine for sys_tkill */
-- 
1.8.3.1