summaryrefslogtreecommitdiff
path: root/util-linux/switch_root.c
diff options
context:
space:
mode:
authorDenis Vlasenko <vda.linux@googlemail.com>2007-04-12 00:32:05 +0000
committerDenis Vlasenko <vda.linux@googlemail.com>2007-04-12 00:32:05 +0000
commit51742f4bb0c57a4d5063ece9437a2f34a42e52c8 (patch)
tree7a912fc65ff43bdb09078d75bfc02ad8f5380b47 /util-linux/switch_root.c
parent50f7f446ecaadef6895a4ee601567e0b68330637 (diff)
downloadbusybox-w32-51742f4bb0c57a4d5063ece9437a2f34a42e52c8.tar.gz
busybox-w32-51742f4bb0c57a4d5063ece9437a2f34a42e52c8.tar.bz2
busybox-w32-51742f4bb0c57a4d5063ece9437a2f34a42e52c8.zip
style fixes. No code changes
Diffstat (limited to 'util-linux/switch_root.c')
-rw-r--r--util-linux/switch_root.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/util-linux/switch_root.c b/util-linux/switch_root.c
index 43377e16e..6dba9f05f 100644
--- a/util-linux/switch_root.c
+++ b/util-linux/switch_root.c
@@ -24,7 +24,7 @@
24#define MS_MOVE 8192 24#define MS_MOVE 8192
25#endif 25#endif
26 26
27dev_t rootdev; 27static dev_t rootdev;
28 28
29// Recursively delete contents of rootfs. 29// Recursively delete contents of rootfs.
30 30
@@ -39,12 +39,13 @@ static void delete_contents(const char *directory)
39 39
40 // Recursively delete the contents of directories. 40 // Recursively delete the contents of directories.
41 if (S_ISDIR(st.st_mode)) { 41 if (S_ISDIR(st.st_mode)) {
42 if((dir = opendir(directory))) { 42 dir = opendir(directory);
43 if (dir) {
43 while ((d = readdir(dir))) { 44 while ((d = readdir(dir))) {
44 char *newdir=d->d_name; 45 char *newdir = d->d_name;
45 46
46 // Skip . and .. 47 // Skip . and ..
47 if(*newdir=='.' && (!newdir[1] || (newdir[1]=='.' && !newdir[2]))) 48 if (*newdir=='.' && (!newdir[1] || (newdir[1]=='.' && !newdir[2])))
48 continue; 49 continue;
49 50
50 // Recurse to delete contents 51 // Recurse to delete contents
@@ -66,7 +67,7 @@ static void delete_contents(const char *directory)
66int switch_root_main(int argc, char **argv); 67int switch_root_main(int argc, char **argv);
67int switch_root_main(int argc, char **argv) 68int switch_root_main(int argc, char **argv)
68{ 69{
69 char *newroot, *console=NULL; 70 char *newroot, *console = NULL;
70 struct stat st1, st2; 71 struct stat st1, st2;
71 struct statfs stfs; 72 struct statfs stfs;
72 73
@@ -77,18 +78,18 @@ int switch_root_main(int argc, char **argv)
77 78
78 // Change to new root directory and verify it's a different fs. 79 // Change to new root directory and verify it's a different fs.
79 80
80 newroot=argv[optind++]; 81 newroot = argv[optind++];
81 82
82 if (chdir(newroot) || lstat(".", &st1) || lstat("/", &st2) || 83 if (chdir(newroot) || lstat(".", &st1) || lstat("/", &st2) ||
83 st1.st_dev == st2.st_dev) 84 st1.st_dev == st2.st_dev)
84 { 85 {
85 bb_error_msg_and_die("bad newroot %s", newroot); 86 bb_error_msg_and_die("bad newroot %s", newroot);
86 } 87 }
87 rootdev=st2.st_dev; 88 rootdev = st2.st_dev;
88 89
89 // Additional sanity checks: we're about to rm -rf /, so be REALLY SURE 90 // Additional sanity checks: we're about to rm -rf /, so be REALLY SURE
90 // we mean it. (I could make this a CONFIG option, but I would get email 91 // we mean it. (I could make this a CONFIG option, but I would get email
91 // from all the people who WILL eat their filesystemss.) 92 // from all the people who WILL eat their filesystems.)
92 93
93 if (lstat("/init", &st1) || !S_ISREG(st1.st_mode) || statfs("/", &stfs) || 94 if (lstat("/init", &st1) || !S_ISREG(st1.st_mode) || statfs("/", &stfs) ||
94 (stfs.f_type != RAMFS_MAGIC && stfs.f_type != TMPFS_MAGIC) || 95 (stfs.f_type != RAMFS_MAGIC && stfs.f_type != TMPFS_MAGIC) ||
@@ -105,14 +106,13 @@ int switch_root_main(int argc, char **argv)
105 // recalculate "." and ".." links. 106 // recalculate "." and ".." links.
106 107
107 if (mount(".", "/", NULL, MS_MOVE, NULL) || chroot(".") || chdir("/")) 108 if (mount(".", "/", NULL, MS_MOVE, NULL) || chroot(".") || chdir("/"))
108 bb_error_msg_and_die("moving root"); 109 bb_error_msg_and_die("error moving root");
109 110
110 // If a new console specified, redirect stdin/stdout/stderr to that. 111 // If a new console specified, redirect stdin/stdout/stderr to that.
111 112
112 if (console) { 113 if (console) {
113 close(0); 114 close(0);
114 if (open(console, O_RDWR) < 0) 115 xopen(console, O_RDWR);
115 bb_error_msg_and_die("bad console '%s'", console);
116 dup2(0, 1); 116 dup2(0, 1);
117 dup2(0, 2); 117 dup2(0, 2);
118 } 118 }