1 files changed, 124 insertions, 0 deletions
diff --git a/progs/old/setpcaps.c b/progs/old/setpcaps.c
new file mode 100644
index 0000000..3720fce
--- /dev/null
+++ b/progs/old/setpcaps.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 1997-8 Andrew G. Morgan  <morgan@kernel.org>
+ *
+ * This sets the capabilities of a given process.
+ */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#undef _POSIX_SOURCE
+#include <sys/capability.h>
+#include <unistd.h>
+
+static void usage(void)
+{
+    fprintf(stderr,
+"usage: setcap [-q] (-|<caps>) <pid> [ ... (-|<capsN>) <pid> ]\n\n"
+"  This program can be used to set the process capabilities of running\n"
+"  processes.  In order to work, it needs to be executing with CAP_SETPCAP\n"
+"  raised, and the only capabilities that this program can bestow on others\n"
+"  are a subset of its effective set.  This program is mostly intended as an\n"
+"  example -- a safe use of CAP_SETPCAP has yet to be demonstrated!\n\n"
+"[Copyright (c) 1997-8 Andrew G. Morgan  <morgan@kernel.org>]\n"
+	);
+    exit(1);
+}
+
+#define MAXCAP  2048
+
+static int read_caps(int quiet, const char *filename, char *buffer)
+{
+    int i=MAXCAP;
+
+    if (!quiet) {
+	fprintf(stderr,	"Please enter caps for file [empty line to end]:\n");
+    }
+    while (i > 0) {
+	int j = read(STDIN_FILENO, buffer, i);
+
+	if (j < 0) {
+	    fprintf(stderr, "\n[Error - aborting]\n");
+	    exit(1);
+	}
+
+	if (j==0 || buffer[0] == '\n') {
+	    /* we're done */
+	    break;
+	}
+
+	/* move on... */
+
+	i -= j;
+	buffer += j;
+    }
+
+    /* <NUL> terminate */
+    buffer[0] = '\0';
+
+    return (i < MAXCAP ? 0:-1);
+}
+
+int main(int argc, char **argv)
+{
+    char buffer[MAXCAP+1];
+    int retval, quiet=0;
+    cap_t cap_d;
+
+    if (argc < 3) {
+	usage();
+    }
+
+    while (--argc > 0) {
+	const char *text;
+	pid_t pid;
+
+	if (!strcmp(*++argv,"-q")) {
+	    quiet = 1;
+	    continue;
+	}
+	if (!strcmp(*argv,"-")) {
+	    retval = read_caps(quiet, *argv, buffer);
+	    if (retval)
+		usage();
+	    text = buffer;
+	} else
+	    text = *argv;
+
+	cap_d = cap_from_text(text);
+	if (cap_d == NULL) {
+	    perror("fatal error");
+	    usage();
+	}
+#ifndef DEBUG
+	{
+	    ssize_t length;
+	    char *result;
+
+	    result = cap_to_text(cap_d, &length);
+	    fprintf(stderr, "[caps set to:\n%s\n]\n", result);
+	    cap_free(result);
+	    result = NULL;
+	}
+#endif
+
+	if (--argc <= 0)
+	    usage();
+
+	pid = atoi(*++argv);
+	retval = capsetp(pid, cap_d);
+
+	if (retval != 0) {
+	    fprintf(stderr, "Failed to set cap's on process `%d': (%s)\n",
+		    pid, strerror(errno));
+	    usage();
+	}
+#ifndef DEBUG
+	fprintf(stderr, "[caps set on %d]\n", pid);
+#endif
+    }
+
+    return 0;
+}