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authorDenys Vlasenko <vda.linux@googlemail.com>2009-07-05 02:50:36 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2009-07-05 02:50:36 (GMT)
commit09e63bb81f12707d31c8c4570931af0196b53a46 (patch)
tree1b550ca677e6cd4fdd70eabda1fd402684b8ec7d
parent9b1b62adc4e4c1e80d9f72180c6b7b1eaef9f95a (diff)
downloadbusybox-09e63bb81f12707d31c8c4570931af0196b53a46.tar.gz
busybox-09e63bb81f12707d31c8c4570931af0196b53a46.tar.bz2
df: fix "df /"
also, clean up mount checks in mkfs/fsck. function old new delta find_mount_point 243 261 +18 sha1_process_block64 497 510 +13 find_main 436 444 +8 display_speed 85 90 +5 df_main 795 793 -2 parse_command 1463 1460 -3 static.ignored_mounts 8 - -8 mkfs_minix_main 2962 2937 -25 fsck_minix_main 3065 2970 -95 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 4/4 up/down: 44/-133) Total: -89 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--archival/libunarchive/data_extract_all.c4
-rw-r--r--coreutils/df.c7
-rw-r--r--include/libbb.h2
-rw-r--r--libbb/find_mount_point.c22
-rw-r--r--loginutils/getty.c2
-rw-r--r--util-linux/fsck_minix.c54
-rw-r--r--util-linux/mkfs_minix.c8
-rw-r--r--util-linux/mkfs_vfat.c2
8 files changed, 47 insertions, 54 deletions
diff --git a/archival/libunarchive/data_extract_all.c b/archival/libunarchive/data_extract_all.c
index 444770d..123d1de 100644
--- a/archival/libunarchive/data_extract_all.c
+++ b/archival/libunarchive/data_extract_all.c
@@ -21,7 +21,7 @@ void FAST_FUNC data_extract_all(archive_handle_t *archive_handle)
/* Check if the file already exists */
if (archive_handle->ah_flags & ARCHIVE_EXTRACT_UNCONDITIONAL) {
/* Remove the entry if it exists */
- if (((file_header->mode & S_IFMT) != S_IFDIR)
+ if ((!S_ISDIR(file_header->mode))
&& (unlink(file_header->name) == -1)
&& (errno != ENOENT)
) {
@@ -132,7 +132,7 @@ void FAST_FUNC data_extract_all(archive_handle_t *archive_handle)
#endif
lchown(file_header->name, file_header->uid, file_header->gid);
}
- if ((file_header->mode & S_IFMT) != S_IFLNK) {
+ if (S_ISLNK(file_header->mode)) {
/* uclibc has no lchmod, glibc is even stranger -
* it has lchmod which seems to do nothing!
* so we use chmod... */
diff --git a/coreutils/df.c b/coreutils/df.c
index 34b0150..d95aff3 100644
--- a/coreutils/df.c
+++ b/coreutils/df.c
@@ -44,7 +44,6 @@ int df_main(int argc, char **argv)
FILE *mount_table;
struct mntent *mount_entry;
struct statfs s;
- static const char ignored_mounts[] ALIGN1 = "rootfs\0";
enum {
OPT_KILO = (1 << 0),
@@ -120,7 +119,7 @@ int df_main(int argc, char **argv)
mount_point = *argv++;
if (!mount_point)
break;
- mount_entry = find_mount_point(mount_point, bb_path_mtab_file);
+ mount_entry = find_mount_point(mount_point);
if (!mount_entry) {
bb_error_msg("%s: can't find mount point", mount_point);
set_error:
@@ -154,8 +153,8 @@ int df_main(int argc, char **argv)
) / (blocks_used + s.f_bavail);
}
- /* GNU coreutils 6.10 skip certain mounts, try to be compatible. */
- if (index_in_strings(device, ignored_mounts) != -1)
+ /* GNU coreutils 6.10 skips certain mounts, try to be compatible. */
+ if (strcmp(device, "rootfs") == 0)
continue;
#ifdef WHY_WE_DO_IT_FOR_DEV_ROOT_ONLY
diff --git a/include/libbb.h b/include/libbb.h
index 835beb2..6f4c547 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -986,7 +986,7 @@ extern void run_applet_no_and_exit(int a, char **argv) NORETURN FAST_FUNC;
#ifdef HAVE_MNTENT_H
extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC;
-extern struct mntent *find_mount_point(const char *name, const char *table) FAST_FUNC;
+extern struct mntent *find_mount_point(const char *name) FAST_FUNC;
#endif
extern void erase_mtab(const char * name) FAST_FUNC;
extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC;
diff --git a/libbb/find_mount_point.c b/libbb/find_mount_point.c
index 4cd6b16..12b2cfc 100644
--- a/libbb/find_mount_point.c
+++ b/libbb/find_mount_point.c
@@ -17,7 +17,7 @@
* Given any other file (or directory), find the mount table entry for its
* filesystem.
*/
-struct mntent* FAST_FUNC find_mount_point(const char *name, const char *table)
+struct mntent* FAST_FUNC find_mount_point(const char *name)
{
struct stat s;
dev_t mountDevice;
@@ -25,27 +25,35 @@ struct mntent* FAST_FUNC find_mount_point(const char *name, const char *table)
struct mntent *mountEntry;
if (stat(name, &s) != 0)
- return 0;
+ return NULL;
- if ((s.st_mode & S_IFMT) == S_IFBLK)
+ if (S_ISBLK(s.st_mode))
mountDevice = s.st_rdev;
else
mountDevice = s.st_dev;
- mountTable = setmntent(table ? table : bb_path_mtab_file, "r");
+ mountTable = setmntent(bb_path_mtab_file, "r");
if (!mountTable)
return 0;
- while ((mountEntry = getmntent(mountTable)) != 0) {
+ while ((mountEntry = getmntent(mountTable)) != NULL) {
+ /* rootfs mount in Linux 2.6 exists always,
+ * and it makes sense to always ignore it.
+ * Otherwise people can't reference their "real" root! */
+ if (strcmp(mountEntry->mnt_fsname, "rootfs") == 0)
+ continue;
+
if (strcmp(name, mountEntry->mnt_dir) == 0
|| strcmp(name, mountEntry->mnt_fsname) == 0
) { /* String match. */
break;
}
- if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice) /* Match the device. */
+ /* Match the device. */
+ if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice)
break;
- if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice) /* Match the directory's mount point. */
+ /* Match the directory's mount point. */
+ if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice)
break;
}
endmntent(mountTable);
diff --git a/loginutils/getty.c b/loginutils/getty.c
index 34b09ce..838adf2 100644
--- a/loginutils/getty.c
+++ b/loginutils/getty.c
@@ -239,7 +239,7 @@ static void open_tty(const char *tty)
// cur_dir_fd = xopen(".", O_DIRECTORY | O_NONBLOCK);
// xchdir("/dev");
// xstat(tty, &st);
-// if ((st.st_mode & S_IFMT) != S_IFCHR)
+// if (!S_ISCHR(st.st_mode))
// bb_error_msg_and_die("%s: not a character device", tty);
if (tty[0] != '/')
diff --git a/util-linux/fsck_minix.c b/util-linux/fsck_minix.c
index 0c33c1b..ca0b17e 100644
--- a/util-linux/fsck_minix.c
+++ b/util-linux/fsck_minix.c
@@ -374,38 +374,28 @@ static int ask(const char *string, int def)
*/
static void check_mount(void)
{
- FILE *f;
- struct mntent *mnt;
- int cont;
- int fd;
-//XXX:FIXME use find_mount_point()
- f = setmntent(MOUNTED, "r");
- if (f == NULL)
- return;
- while ((mnt = getmntent(f)) != NULL)
- if (strcmp(device_name, mnt->mnt_fsname) == 0)
- break;
- endmntent(f);
- if (!mnt)
- return;
-
- /*
- * If the root is mounted read-only, then /etc/mtab is
- * probably not correct; so we won't issue a warning based on
- * it.
- */
- fd = open(MOUNTED, O_RDWR);
- if (fd < 0 && errno == EROFS)
- return;
- close(fd);
-
- printf("%s is mounted. ", device_name);
- cont = 0;
- if (isatty(0) && isatty(1))
- cont = ask("Do you really want to continue", 0);
- if (!cont) {
- printf("Check aborted\n");
- exit(EXIT_SUCCESS);
+ if (find_mount_point(device_name)) {
+ int cont;
+#if ENABLE_FEATURE_MTAB_SUPPORT
+ /*
+ * If the root is mounted read-only, then /etc/mtab is
+ * probably not correct; so we won't issue a warning based on
+ * it.
+ */
+ int fd = open(bb_path_mtab_file, O_RDWR);
+
+ if (fd < 0 && errno == EROFS)
+ return;
+ close(fd);
+#endif
+ printf("%s is mounted. ", device_name);
+ cont = 0;
+ if (isatty(0) && isatty(1))
+ cont = ask("Do you really want to continue", 0);
+ if (!cont) {
+ printf("Check aborted\n");
+ exit(EXIT_SUCCESS);
+ }
}
}
diff --git a/util-linux/mkfs_minix.c b/util-linux/mkfs_minix.c
index 2666132..18512a3 100644
--- a/util-linux/mkfs_minix.c
+++ b/util-linux/mkfs_minix.c
@@ -624,7 +624,6 @@ static void setup_tables(void)
int mkfs_minix_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int mkfs_minix_main(int argc UNUSED_PARAM, char **argv)
{
- struct mntent *mp;
unsigned opt;
char *tmp;
struct stat statbuf;
@@ -683,11 +682,8 @@ int mkfs_minix_main(int argc UNUSED_PARAM, char **argv)
G.total_blocks = 65535;
/* Check if it is mounted */
- mp = find_mount_point(G.device_name, NULL);
- if (mp && strcmp(G.device_name, mp->mnt_fsname) == 0)
- bb_error_msg_and_die("%s is mounted on %s; "
- "refusing to make a filesystem",
- G.device_name, mp->mnt_dir);
+ if (find_mount_point(G.device_name))
+ bb_error_msg_and_die("can't format mounted filesystem");
xmove_fd(xopen(G.device_name, O_RDWR), dev_fd);
if (fstat(dev_fd, &statbuf) < 0)
diff --git a/util-linux/mkfs_vfat.c b/util-linux/mkfs_vfat.c
index 98a0895..8c6078d 100644
--- a/util-linux/mkfs_vfat.c
+++ b/util-linux/mkfs_vfat.c
@@ -275,7 +275,7 @@ int mkfs_vfat_main(int argc UNUSED_PARAM, char **argv)
)
bb_error_msg_and_die("will not try to make filesystem on full-disk device (use -I if wanted)");
// can't work on mounted filesystems
- if (find_mount_point(device_name, NULL))
+ if (find_mount_point(device_name))
bb_error_msg_and_die("can't format mounted filesystem");
#endif
// get true sector size