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| author | Adrian Bunk <bunk@r063144.stusta.swh.mhn.de> | 2006-03-20 18:30:36 +0100 |
|---|---|---|
| committer | Adrian Bunk <bunk@r063144.stusta.swh.mhn.de> | 2006-03-20 18:30:36 +0100 |
| commit | 0f76ee451484d02c7405d92e7bceb39b415abb01 (patch) | |
| tree | 9722f84281f786ba48971dde057f5171a49969e4 /arch/parisc/hpux/sys_hpux.c | |
| parent | 01d206a7c1167639f6ca6dac22140fbdca017558 (diff) | |
| parent | 7705a8792b0fc82fd7d4dd923724606bbfd9fb20 (diff) | |
Merge with git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Diffstat (limited to 'arch/parisc/hpux/sys_hpux.c')
| -rw-r--r-- | arch/parisc/hpux/sys_hpux.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/parisc/hpux/sys_hpux.c b/arch/parisc/hpux/sys_hpux.c index 29b4d61898f..05273ccced0 100644 --- a/arch/parisc/hpux/sys_hpux.c +++ b/arch/parisc/hpux/sys_hpux.c @@ -468,19 +468,23 @@ int hpux_sysfs(int opcode, unsigned long arg1, unsigned long arg2) if ( opcode == 1 ) { /* GETFSIND */ len = strlen_user((char *)arg1); printk(KERN_DEBUG "len of arg1 = %d\n", len); - - fsname = (char *) kmalloc(len+1, GFP_KERNEL); + if (len == 0) + return 0; + fsname = (char *) kmalloc(len, GFP_KERNEL); if ( !fsname ) { printk(KERN_DEBUG "failed to kmalloc fsname\n"); return 0; } - if ( copy_from_user(fsname, (char *)arg1, len+1) ) { + if ( copy_from_user(fsname, (char *)arg1, len) ) { printk(KERN_DEBUG "failed to copy_from_user fsname\n"); kfree(fsname); return 0; } + /* String could be altered by userspace after strlen_user() */ + fsname[len] = '\0'; + printk(KERN_DEBUG "that is '%s' as (char *)\n", fsname); if ( !strcmp(fsname, "hfs") ) { fstype = 0; |