1 files changed, 136 insertions, 0 deletions
diff --git a/tdeprint/signal_proc.c b/tdeprint/signal_proc.c
new file mode 100644
index 000000000..8ff30e56e
--- /dev/null
+++ b/tdeprint/signal_proc.c
@@ -0,0 +1,136 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <errno.h>
+
+void commandFromPid(int pid, char *name)
+{
+	char	buf[256], c;
+	FILE	*f;
+	int	i;
+
+	name[0] = 0;
+	snprintf(buf, 256, "/proc/%d/stat", pid);
+	f = fopen(buf, "r");
+	if (f == NULL)
+		return;
+	while ((c = fgetc(f)) != '(') ;
+	i = 0;
+	while ((c = fgetc(f)) != ')')
+		name[i++] = c;
+	name[i] = 0;
+}
+
+int findPid(const char *progname)
+{
+	char	name[256];
+	DIR	*dir;
+	int	pid = -1;
+	struct dirent	*ds;
+
+	dir = opendir("/proc");
+	if (dir == NULL)
+		return -1;
+	while ((ds = readdir(dir)) !=NULL )
+	{
+		pid = -1;
+		pid = atoi(ds->d_name);
+		if (pid != -1)
+		{
+			commandFromPid(pid, name);
+			if (strcmp(progname, name) == 0)
+				return pid;
+		}
+	}
+
+	return -1;
+}
+
+void usage()
+{
+	printf("usage: signal_proc [ -s signal_number ] [ -l ] -p <progname>\n");
+}
+
+int main(int argc, char **argv)
+{
+	int	pid = -1;
+	char	progname[128] = {0};
+	int	signal_number = -1, i, list_only = 0;
+
+	for (i = 1; i < argc; i++)
+	{
+		if (argv[i][0] != '-')
+		{
+			usage();
+			return(-1);
+		}
+		
+		switch (argv[i][1])
+		{
+			case 'p':
+				strncpy(progname, argv[++i], 128);
+                                progname[127]='\0';
+				break;
+			case 's':
+				signal_number = atoi(argv[++i]);
+				break;
+			case 'l':
+				list_only = 1;
+				break;
+			default:
+				usage();
+				return -1;
+		}
+	}
+
+	if (progname[0] == 0)
+	{
+		usage();
+		return -1;
+	}
+
+	pid = findPid(progname);
+	if (pid == -1)
+	{
+		fprintf(stderr, "no such program: %s\n", progname);
+		return -1;
+	}
+	if (list_only)
+	{
+		fprintf(stdout, "PID: %d\n", pid);
+		return 0;
+	}
+
+	if (signal_number != -1)
+	{
+		int	result;
+
+		result = kill(pid, signal_number);
+		if (result == -1)
+		{
+			if (errno == EPERM)
+			{
+				char	buf[256];
+
+				fprintf(stderr, "operation not authorized, switching to root\n");
+				snprintf(buf, 256, "kill -%d %d", signal_number, pid);
+				if (execlp("tdesu", "tdesu", "-c", buf, (void *)0) == -1)
+				{
+					fprintf(stderr, "operation failed: %s\n", strerror(errno));
+					return -1;
+				}
+			}
+			else
+			{
+				fprintf(stderr, "operation failed (invalid signal or no such process)\n");
+				return -1;
+			}
+		}
+	}
+	else
+	{
+		fprintf(stderr, "only signal sending is currently supported\n");
+		return -1;
+	}
+	return 0;
+}