7 files changed, 53 insertions, 111 deletions

diff --git a/Changelog b/Changelog
index cd0ca0a35..1161f8bb3 100644
--- a/Changelog
+++ b/Changelog
@@ -9,10 +9,18 @@
         * Wrote sed -- weighs only 1.8k (5.8k with full regular expressions!).
         * Fixed a stupid seg-fault in sync
         * Fixed mount -- mount -a failed to parse and apply mount options
+        * Fixed umount -n (patch thanks to Matthew Grant <grantma@anathoth.gen.nz>)
+        * umount -a no longer umounts /proc
         * Added BB_MTAB, allowing (at the cost of ~1.5k and the need for a rw /etc)
             folks to use a real /etc/mtab file instead of a symlink to /proc/mounts.
             mount, and umount will add/remove entries and df will now use /etc/mtab 
             if BB_MTAB is defined. 
+        * Fixed a nice bug in recursiveAction() which caused it to infinitely
+            hunt through /proc/../fd/* creating new file descriptors if it
+            followed the /dev/fd link over to /proc.  recursiveAction() now 
+            lstat's the file when followLinks==FALSE so it won't follow links 
+            as the name suggests.  Fix thanks to Matt Porter <porter@debian.org>.
+
 
          -Erik Andersen
 
diff --git a/busybox.def.h b/busybox.def.h
index 880046318..59c1df188 100644
--- a/busybox.def.h
+++ b/busybox.def.h
@@ -38,7 +38,7 @@
 #define BB_MORE
 #define BB_MOUNT
 //#define BB_MT
-#define BB_MTAB
+//#define BB_MTAB
 #define BB_MV
 //#define BB_PRINTF
 #define BB_PS
diff --git a/init.c b/init.c
index 55c5c7318..87746ef86 100644
--- a/init.c
+++ b/init.c
@@ -123,13 +123,6 @@ void message(int device, char *fmt, ...)
 void set_term( int fd)
 {
     struct termios tty;
-#if 0
-    static const char control_characters[] = {
-        '\003', '\034', '\177', '\025', '\004', '\0',
-        '\1', '\0', '\021', '\023', '\032', '\0', '\022',
-        '\017', '\027', '\026', '\0'
-        };
-#endif
     static const char control_characters[] = {
         '\003', '\034', '\177', '\030', '\004', '\0',
         '\1', '\0', '\021', '\023', '\032', '\0', '\022',
@@ -160,44 +153,6 @@ void set_term( int fd)
     tcsetattr(fd, TCSANOW, &tty);
 }
 
-/* Set terminal settings to reasonable defaults */
-void set_term_old( int fd)
-{
-    struct termios tty;
-
-    ioctl(fd, TCGETA, &tty);
-
-    tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
-    tty.c_cflag |= HUPCL|CLOCAL;
-
-    tty.c_cc[VINTR]    = 3;
-    tty.c_cc[VQUIT]    = 28;
-    tty.c_cc[VERASE]   = 127;
-    //tty.c_cc[VKILL]    = 21;
-    tty.c_cc[VKILL]    = 24;
-    tty.c_cc[VEOF]     = 4;
-    tty.c_cc[VTIME]    = 0;
-    tty.c_cc[VMIN]     = 1;
-    tty.c_cc[VSWTC]    = 0;
-    tty.c_cc[VSTART]   = 17;
-    tty.c_cc[VSTOP]    = 19;
-    tty.c_cc[VSUSP]    = 26;
-    tty.c_cc[VEOL]     = 0;
-    tty.c_cc[VREPRINT] = 18;
-    tty.c_cc[VDISCARD] = 15;
-    tty.c_cc[VWERASE]  = 23;
-    tty.c_cc[VLNEXT]   = 22;
-    tty.c_cc[VEOL2]    = 0;
-    
-
-    tty.c_line  = 0;
-    tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY;
-    tty.c_oflag = OPOST|ONLCR;
-    tty.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK|ECHOCTL|ECHOPRT|ECHOKE|IEXTEN;
-
-    ioctl(fd, TCSETA, &tty);
-}
-
 /* How much memory does this machine have? */
 static int mem_total()
 {
@@ -395,7 +350,12 @@ static void shutdown_system(void)
     waitfor(run( swap_off_cmd, console, FALSE));
     waitfor(run( umount_cmd, console, FALSE));
     sync();
-    bdflush(1, 0);
+    message(CONSOLE, "Skipping bdflush\r\n");
+    if (get_kernel_revision() <= 2 * 65536 + 2 * 256 + 11) {
+        /* bdflush, kupdate not needed for kernels >2.2.11 */
+        bdflush(1, 0);
+        sync();
+    }
 }
 
 static void halt_signal(int sig)
@@ -518,15 +478,19 @@ extern int init_main(int argc, char **argv)
         if (wpid > 0 ) {
             message(LOG, "pid %d exited, status=%x.\n", wpid, status);
         }
+        /* Don't respawn init script if it exits */
         if (wpid == pid1) {
-            pid1 = 0;
-            if (run_rc == TRUE) {
-                /* Don't respawn init script if it exits,
-                 * Start a shell instead. */
+            if (run_rc == FALSE) {
+                pid1 = 0;
+            } 
+#if 0
+/* Turn this on to start a shell on the console if the init script exits.... */
+            else {
                 run_rc=FALSE;
                 wait_for_enter=TRUE;
                 tty0_commands=shell_commands;
             }
+#endif
         }
         if (wpid == pid2) {
             pid2 = 0;
diff --git a/init/init.c b/init/init.c
index 55c5c7318..87746ef86 100644
--- a/init/init.c
+++ b/init/init.c
@@ -123,13 +123,6 @@ void message(int device, char *fmt, ...)
 void set_term( int fd)
 {
     struct termios tty;
-#if 0
-    static const char control_characters[] = {
-        '\003', '\034', '\177', '\025', '\004', '\0',
-        '\1', '\0', '\021', '\023', '\032', '\0', '\022',
-        '\017', '\027', '\026', '\0'
-        };
-#endif
     static const char control_characters[] = {
         '\003', '\034', '\177', '\030', '\004', '\0',
         '\1', '\0', '\021', '\023', '\032', '\0', '\022',
@@ -160,44 +153,6 @@ void set_term( int fd)
     tcsetattr(fd, TCSANOW, &tty);
 }
 
-/* Set terminal settings to reasonable defaults */
-void set_term_old( int fd)
-{
-    struct termios tty;
-
-    ioctl(fd, TCGETA, &tty);
-
-    tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
-    tty.c_cflag |= HUPCL|CLOCAL;
-
-    tty.c_cc[VINTR]    = 3;
-    tty.c_cc[VQUIT]    = 28;
-    tty.c_cc[VERASE]   = 127;
-    //tty.c_cc[VKILL]    = 21;
-    tty.c_cc[VKILL]    = 24;
-    tty.c_cc[VEOF]     = 4;
-    tty.c_cc[VTIME]    = 0;
-    tty.c_cc[VMIN]     = 1;
-    tty.c_cc[VSWTC]    = 0;
-    tty.c_cc[VSTART]   = 17;
-    tty.c_cc[VSTOP]    = 19;
-    tty.c_cc[VSUSP]    = 26;
-    tty.c_cc[VEOL]     = 0;
-    tty.c_cc[VREPRINT] = 18;
-    tty.c_cc[VDISCARD] = 15;
-    tty.c_cc[VWERASE]  = 23;
-    tty.c_cc[VLNEXT]   = 22;
-    tty.c_cc[VEOL2]    = 0;
-    
-
-    tty.c_line  = 0;
-    tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY;
-    tty.c_oflag = OPOST|ONLCR;
-    tty.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK|ECHOCTL|ECHOPRT|ECHOKE|IEXTEN;
-
-    ioctl(fd, TCSETA, &tty);
-}
-
 /* How much memory does this machine have? */
 static int mem_total()
 {
@@ -395,7 +350,12 @@ static void shutdown_system(void)
     waitfor(run( swap_off_cmd, console, FALSE));
     waitfor(run( umount_cmd, console, FALSE));
     sync();
-    bdflush(1, 0);
+    message(CONSOLE, "Skipping bdflush\r\n");
+    if (get_kernel_revision() <= 2 * 65536 + 2 * 256 + 11) {
+        /* bdflush, kupdate not needed for kernels >2.2.11 */
+        bdflush(1, 0);
+        sync();
+    }
 }
 
 static void halt_signal(int sig)
@@ -518,15 +478,19 @@ extern int init_main(int argc, char **argv)
         if (wpid > 0 ) {
             message(LOG, "pid %d exited, status=%x.\n", wpid, status);
         }
+        /* Don't respawn init script if it exits */
         if (wpid == pid1) {
-            pid1 = 0;
-            if (run_rc == TRUE) {
-                /* Don't respawn init script if it exits,
-                 * Start a shell instead. */
+            if (run_rc == FALSE) {
+                pid1 = 0;
+            } 
+#if 0
+/* Turn this on to start a shell on the console if the init script exits.... */
+            else {
                 run_rc=FALSE;
                 wait_for_enter=TRUE;
                 tty0_commands=shell_commands;
             }
+#endif
         }
         if (wpid == pid2) {
             pid2 = 0;
diff --git a/umount.c b/umount.c
index e749c5f0f..89c59f9ee 100644
--- a/umount.c
+++ b/umount.c
@@ -76,6 +76,10 @@ umount_all(int useMtab)
                 if (strcmp (blockDevice, "/dev/root") == 0)
                     blockDevice = (getfsfile ("/"))->fs_spec;
 #endif
+                /* Don't umount /proc when doing umount -a */
+                if (strcmp (blockDevice, "proc") == 0)
+                    continue;
+
                 status=do_umount (m->mnt_dir, useMtab);
                 if (status!=0) {
                     /* Don't bother retrying the umount on busy devices */
@@ -83,9 +87,6 @@ umount_all(int useMtab)
                         perror(m->mnt_dir); 
                         continue;
                     }
-                    printf ("Trying to umount %s failed: %s\n", 
-                            m->mnt_dir, strerror(errno)); 
-                    printf ("Instead trying to umount %s\n", blockDevice); 
                     status=do_umount (blockDevice, useMtab);
                     if (status!=0) {
                         printf ("Couldn't umount %s on %s (type %s): %s\n", 
@@ -107,7 +108,7 @@ umount_main(int argc, char** argv)
     }
 
     /* Parse any options */
-    while (argc-- > 0 && **(++argv) == '-') {
+    while (argc-- > 0 && **(argv++) == '-') {
         while (*++(*argv)) switch (**argv) {
             case 'a':
                 umountAll = TRUE;
diff --git a/util-linux/umount.c b/util-linux/umount.c
index e749c5f0f..89c59f9ee 100644
--- a/util-linux/umount.c
+++ b/util-linux/umount.c
@@ -76,6 +76,10 @@ umount_all(int useMtab)
                 if (strcmp (blockDevice, "/dev/root") == 0)
                     blockDevice = (getfsfile ("/"))->fs_spec;
 #endif
+                /* Don't umount /proc when doing umount -a */
+                if (strcmp (blockDevice, "proc") == 0)
+                    continue;
+
                 status=do_umount (m->mnt_dir, useMtab);
                 if (status!=0) {
                     /* Don't bother retrying the umount on busy devices */
@@ -83,9 +87,6 @@ umount_all(int useMtab)
                         perror(m->mnt_dir); 
                         continue;
                     }
-                    printf ("Trying to umount %s failed: %s\n", 
-                            m->mnt_dir, strerror(errno)); 
-                    printf ("Instead trying to umount %s\n", blockDevice); 
                     status=do_umount (blockDevice, useMtab);
                     if (status!=0) {
                         printf ("Couldn't umount %s on %s (type %s): %s\n", 
@@ -107,7 +108,7 @@ umount_main(int argc, char** argv)
     }
 
     /* Parse any options */
-    while (argc-- > 0 && **(++argv) == '-') {
+    while (argc-- > 0 && **(argv++) == '-') {
         while (*++(*argv)) switch (**argv) {
             case 'a':
                 umountAll = TRUE;
diff --git a/utility.c b/utility.c
index 125e819ed..50d019254 100644
--- a/utility.c
+++ b/utility.c
@@ -393,7 +393,8 @@ int fullRead(int fd, char *buf, int len)
  *
  * Unfortunatly, while nftw(3) could replace this and reduce 
  * code size a bit, nftw() wasn't supported before GNU libc 2.1, 
- * and so isn't sufficiently portable to take over...
+ * and so isn't sufficiently portable to take over since glibc2.1
+ * is so stinking huge.
  */
 int
 recursiveAction(const char *fileName, int recurse, int followLinks, int depthFirst,
@@ -404,7 +405,7 @@ recursiveAction(const char *fileName, int recurse, int followLinks, int depthFir
     struct stat statbuf;
     struct dirent *next;
 
-    if (followLinks == FALSE)
+    if (followLinks == TRUE)
         status = stat(fileName, &statbuf);
     else
         status = lstat(fileName, &statbuf);
@@ -414,6 +415,9 @@ recursiveAction(const char *fileName, int recurse, int followLinks, int depthFir
         return (FALSE);
     }
 
+    if ( (followLinks == FALSE) && (S_ISLNK(statbuf.st_mode)) )
+        return (TRUE);
+
     if (recurse == FALSE) {
         if (S_ISDIR(statbuf.st_mode)) {
             if (dirAction != NULL)