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| author | Eric Andersen <andersen@codepoet.org> | 2001-02-13 20:04:30 +0000 |
|---|---|---|
| committer | Eric Andersen <andersen@codepoet.org> | 2001-02-13 20:04:30 +0000 |
| commit | 6fd8c664c1bcb44429b81444be640ff08cac3702 (patch) | |
| tree | a8faf540fe49e308e52e1694e00f280ac51b9192 /util-linux/pivot_root.c | |
| parent | 3af1f88725348b15a0aa467b5734d55210bedf7c (diff) | |
| download | busybox-w32-6fd8c664c1bcb44429b81444be640ff08cac3702.tar.gz busybox-w32-6fd8c664c1bcb44429b81444be640ff08cac3702.tar.bz2 busybox-w32-6fd8c664c1bcb44429b81444be640ff08cac3702.zip | |
Apply a patch from Evin Robertson -- new pivot_root applet.
-Erik
Diffstat (limited to 'util-linux/pivot_root.c')
| -rw-r--r-- | util-linux/pivot_root.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/util-linux/pivot_root.c b/util-linux/pivot_root.c new file mode 100644 index 000000000..92fe4aeab --- /dev/null +++ b/util-linux/pivot_root.c | |||
| @@ -0,0 +1,39 @@ | |||
| 1 | /* vi: set sw=4 ts=4: */ | ||
| 2 | /* | ||
| 3 | * pivot_root.c - Change root file system. Based on util-linux 2.10s | ||
| 4 | * | ||
| 5 | * busyboxed by Evin Robertson | ||
| 6 | */ | ||
| 7 | #include "busybox.h" | ||
| 8 | #include <stdlib.h> | ||
| 9 | #include <stdio.h> | ||
| 10 | #include <sys/syscall.h> | ||
| 11 | #include <linux/unistd.h> | ||
| 12 | |||
| 13 | #ifndef __NR_pivot_root | ||
| 14 | #error Sorry, but this kernel does not support the pivot_root syscall | ||
| 15 | #endif | ||
| 16 | |||
| 17 | static _syscall2(int,pivot_root,const char *,new_root,const char *,put_old) | ||
| 18 | |||
| 19 | |||
| 20 | int pivot_root_main(int argc, char **argv) | ||
| 21 | { | ||
| 22 | if (argc != 3) | ||
| 23 | usage(pivot_root_usage); | ||
| 24 | |||
| 25 | if (pivot_root(argv[1],argv[2]) < 0) | ||
| 26 | perror_msg_and_die("pivot_root"); | ||
| 27 | |||
| 28 | return EXIT_SUCCESS; | ||
| 29 | |||
| 30 | } | ||
| 31 | |||
| 32 | |||
| 33 | /* | ||
| 34 | Local Variables: | ||
| 35 | c-file-style: "linux" | ||
| 36 | c-basic-offset: 4 | ||
| 37 | tab-width: 4 | ||
| 38 | End: | ||
| 39 | */ | ||