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authorPere Orga <gotrunks@gmail.com>2011-03-12 17:13:15 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2011-03-12 17:13:15 (GMT)
commitcf8b55c40b65a30a6b397f66658d83f0f31f4ed1 (patch)
tree8d690e32be965f055cfd6b2a5bb515c660fa3349
parent5c942713b7369d239b1303c0cfc7049d898564d4 (diff)
downloadbusybox-cf8b55c40b65a30a6b397f66658d83f0f31f4ed1.tar.gz
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pwdx: new applet
function old new delta pwdx_main - 197 +197 packed_usage 28237 28261 +24 applet_names 2391 2396 +5 applet_main 1392 1396 +4 applet_nameofs 696 698 +2 applet_install_loc 174 175 +1 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 5/0 up/down: 233/0) Total: 233 bytes Signed-off-by: Pere Orga <gotrunks@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--procps/pwdx.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/procps/pwdx.c b/procps/pwdx.c
new file mode 100644
index 0000000..7818104
--- /dev/null
+++ b/procps/pwdx.c
@@ -0,0 +1,60 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * pwdx implementation for busybox
+ *
+ * Copyright (c) 2004 Nicholas Miell
+ * ported from procps by Pere Orga <gotrunks@gmail.com> 2011
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
+ */
+
+//config:config PWDX
+//config: bool "pwdx"
+//config: default y
+//config: help
+//config: Report current working directory of a process
+
+//applet:IF_PWDX(APPLET(pwdx, BB_DIR_USR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_PWDX) += pwdx.o
+
+//usage:#define pwdx_trivial_usage
+//usage: "PID..."
+//usage:#define pwdx_full_usage "\n\n"
+//usage: "Show current directory for PIDs\n"
+
+#include "libbb.h"
+
+int pwdx_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int pwdx_main(int argc UNUSED_PARAM, char **argv)
+{
+ opt_complementary = "-1";
+ getopt32(argv, "");
+ argv += optind;
+
+ do {
+ char buf[sizeof("/proc/%u/cwd") + sizeof(int)*3];
+ unsigned pid;
+ char *s;
+ char *arg = *argv;
+
+ // Allowed on the command line:
+ // /proc/NUM
+ // NUM
+ if (strncmp(arg, "/proc/", 6) == 0)
+ arg += 6;
+
+ pid = bb_strtou(arg, NULL, 10);
+ if (errno)
+ bb_error_msg_and_die("invalid process id: '%s'", arg);
+
+ sprintf(buf, "/proc/%u/cwd", pid);
+
+ s = xmalloc_readlink(buf);
+ // "pwdx /proc/1" says "/proc/1: DIR", not "1: DIR"
+ printf("%s: %s\n", *argv, s ? s : strerror(errno == ENOENT ? ESRCH : errno));
+ free(s);
+ } while (*++argv);
+
+ return EXIT_SUCCESS;
+}