Major rewrite of mount, umount, losetup. Untangled lots of code, shrunk

things down a bit, fixed a number of funky corner cases, added support for
several new features (things like mount --move, mount --bind, lazy unounts,
automatic detection of loop mounts, and so on).  Probably broke several
other things, but it's fixable.  (Bang on it, tell me what doesn't work for
you...)

Note: you no longer need to say "-o loop".  It does that for you when
necessary.

Still need to add "user mount" support, which involves making mount suid.  Not
too hard to do under the new infrastructure, just haven't done it yet...

The previous code had the following notes, that belong in the version
control comments:

- * 3/21/1999   Charles P. Wright <cpwright@cpwright.com>
- *             searches through fstab when -a is passed
- *             will try mounting stuff with all fses when passed -t auto
- *
- * 1999-04-17  Dave Cinege...Rewrote -t auto. Fixed ro mtab.
- *
- * 1999-10-07  Erik Andersen <andersen@codepoet.org>.
- *              Rewrite of a lot of code. Removed mtab usage (I plan on
- *              putting it back as a compile-time option some time),
- *              major adjustments to option parsing, and some serious
- *              dieting all around.
- *
- * 1999-11-06  mtab support is back - andersee
- *
- * 2000-01-12   Ben Collins <bcollins@debian.org>, Borrowed utils-linux's
- *              mount to add loop support.
- *
- * 2000-04-30  Dave Cinege <dcinege@psychosis.com>
- *             Rewrote fstab while loop and lower mount section. Can now do
- *             single mounts from fstab. Can override fstab options for single
- *             mount. Common mount_one call for single mounts and 'all'. Fixed
- *             mtab updating and stale entries. Removed 'remount' default.
- *

1 files changed, 4 insertions, 7 deletions

diff --git a/include/libbb.h b/include/libbb.h
index d12860ca9..14670f026 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -132,11 +132,9 @@ extern int get_kernel_revision(void);
 
 extern int get_console_fd(void);
 extern struct mntent *find_mount_point(const char *name, const char *table);
-extern void write_mtab(char* blockDevice, char* directory,
-                                           char* filesystemType, long flags, char* string_flags);
 extern void erase_mtab(const char * name);
 extern long *find_pid_by_name( const char* pidName);
-extern char *find_real_root_device_name(void);
+extern char *find_block_device(char *path);
 extern char *bb_get_line_from_file(FILE *file);
 extern char *bb_get_chomped_line_from_file(FILE *file);
 extern char *bb_get_chunk_from_file(FILE *file);
@@ -242,16 +240,14 @@ extern char *bb_askpass(int timeout, const char * prompt);
 extern int device_open(const char *device, int mode);
 
 extern int del_loop(const char *device);
-extern int set_loop(const char *device, const char *file, int offset, int *loopro);
-extern char *find_unused_loop_device (void);
-
+extern int set_loop(char **device, const char *file, int offset);
 
 #if (__GLIBC__ < 2)
 extern int vdprintf(int d, const char *format, va_list ap);
 #endif
 
 int nfsmount(const char *spec, const char *node, int *flags,
-             char **extra_opts, char **mount_opts, int running_bg);
+             char **mount_opts, int running_bg);
 
 /* Include our own copy of struct sysinfo to avoid binary compatability
  * problems with Linux 2.4, which changed things.  Grumble, grumble. */
@@ -452,6 +448,7 @@ typedef struct {
         int ppid;
 #ifdef FEATURE_CPU_USAGE_PERCENTAGE
         unsigned pcpu;
+        unsigned pscpu;
         unsigned long stime, utime;
 #endif
         char *cmd;