diff options
Diffstat (limited to 'util-linux/switch_root.c')
| -rw-r--r-- | util-linux/switch_root.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/util-linux/switch_root.c b/util-linux/switch_root.c index 43377e1..6dba9f0 100644 --- a/util-linux/switch_root.c +++ b/util-linux/switch_root.c @@ -24,7 +24,7 @@ #define MS_MOVE 8192 #endif -dev_t rootdev; +static dev_t rootdev; // Recursively delete contents of rootfs. @@ -39,12 +39,13 @@ static void delete_contents(const char *directory) // Recursively delete the contents of directories. if (S_ISDIR(st.st_mode)) { - if((dir = opendir(directory))) { + dir = opendir(directory); + if (dir) { while ((d = readdir(dir))) { - char *newdir=d->d_name; + char *newdir = d->d_name; // Skip . and .. - if(*newdir=='.' && (!newdir[1] || (newdir[1]=='.' && !newdir[2]))) + if (*newdir=='.' && (!newdir[1] || (newdir[1]=='.' && !newdir[2]))) continue; // Recurse to delete contents @@ -66,7 +67,7 @@ static void delete_contents(const char *directory) int switch_root_main(int argc, char **argv); int switch_root_main(int argc, char **argv) { - char *newroot, *console=NULL; + char *newroot, *console = NULL; struct stat st1, st2; struct statfs stfs; @@ -77,18 +78,18 @@ int switch_root_main(int argc, char **argv) // Change to new root directory and verify it's a different fs. - newroot=argv[optind++]; + newroot = argv[optind++]; if (chdir(newroot) || lstat(".", &st1) || lstat("/", &st2) || st1.st_dev == st2.st_dev) { bb_error_msg_and_die("bad newroot %s", newroot); } - rootdev=st2.st_dev; + rootdev = st2.st_dev; // Additional sanity checks: we're about to rm -rf /, so be REALLY SURE // we mean it. (I could make this a CONFIG option, but I would get email - // from all the people who WILL eat their filesystemss.) + // from all the people who WILL eat their filesystems.) if (lstat("/init", &st1) || !S_ISREG(st1.st_mode) || statfs("/", &stfs) || (stfs.f_type != RAMFS_MAGIC && stfs.f_type != TMPFS_MAGIC) || @@ -105,14 +106,13 @@ int switch_root_main(int argc, char **argv) // recalculate "." and ".." links. if (mount(".", "/", NULL, MS_MOVE, NULL) || chroot(".") || chdir("/")) - bb_error_msg_and_die("moving root"); + bb_error_msg_and_die("error moving root"); // If a new console specified, redirect stdin/stdout/stderr to that. if (console) { close(0); - if (open(console, O_RDWR) < 0) - bb_error_msg_and_die("bad console '%s'", console); + xopen(console, O_RDWR); dup2(0, 1); dup2(0, 2); } |