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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-10 13:58:28 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-10 13:58:28 -0700 |
commit | 7233e392760b3493095d3d5885cb15e44493d74a (patch) | |
tree | e2095425fe34c635ee2cf77f9ef6022f7cddfbb1 /fs/autofs/root.c | |
parent | 4c619407b0439c59c20398b9459020c0d297f424 (diff) | |
parent | 5ef06839f50c7e5e479d3595257131edf1f84f36 (diff) | |
download | kernel_samsung_smdk4412-7233e392760b3493095d3d5885cb15e44493d74a.zip kernel_samsung_smdk4412-7233e392760b3493095d3d5885cb15e44493d74a.tar.gz kernel_samsung_smdk4412-7233e392760b3493095d3d5885cb15e44493d74a.tar.bz2 |
Merge branch 'bkl/ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing
* 'bkl/ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing:
staging: Pushdown bkl to easycap ioctl handlers
autofs/autofs4: Move compat_ioctl handling into fs
v4l: Convert v4l2-dev to unlocked_ioctl
ia64/perfmon: Convert to unlocked_ioctl
sunrpc: Remove duplicated #include
ncpfs: Remove duplicated #include
Diffstat (limited to 'fs/autofs/root.c')
-rw-r--r-- | fs/autofs/root.c | 67 |
1 files changed, 64 insertions, 3 deletions
diff --git a/fs/autofs/root.c b/fs/autofs/root.c index 9a0520b..11b1ea7 100644 --- a/fs/autofs/root.c +++ b/fs/autofs/root.c @@ -16,6 +16,7 @@ #include <linux/slab.h> #include <linux/param.h> #include <linux/time.h> +#include <linux/compat.h> #include <linux/smp_lock.h> #include "autofs_i.h" @@ -25,13 +26,17 @@ static int autofs_root_symlink(struct inode *,struct dentry *,const char *); static int autofs_root_unlink(struct inode *,struct dentry *); static int autofs_root_rmdir(struct inode *,struct dentry *); static int autofs_root_mkdir(struct inode *,struct dentry *,int); -static int autofs_root_ioctl(struct inode *, struct file *,unsigned int,unsigned long); +static long autofs_root_ioctl(struct file *,unsigned int,unsigned long); +static long autofs_root_compat_ioctl(struct file *,unsigned int,unsigned long); const struct file_operations autofs_root_operations = { .llseek = generic_file_llseek, .read = generic_read_dir, .readdir = autofs_root_readdir, - .ioctl = autofs_root_ioctl, + .unlocked_ioctl = autofs_root_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = autofs_root_compat_ioctl, +#endif }; const struct inode_operations autofs_root_inode_operations = { @@ -492,6 +497,25 @@ static int autofs_root_mkdir(struct inode *dir, struct dentry *dentry, int mode) } /* Get/set timeout ioctl() operation */ +#ifdef CONFIG_COMPAT +static inline int autofs_compat_get_set_timeout(struct autofs_sb_info *sbi, + unsigned int __user *p) +{ + unsigned long ntimeout; + + if (get_user(ntimeout, p) || + put_user(sbi->exp_timeout / HZ, p)) + return -EFAULT; + + if (ntimeout > UINT_MAX/HZ) + sbi->exp_timeout = 0; + else + sbi->exp_timeout = ntimeout * HZ; + + return 0; +} +#endif + static inline int autofs_get_set_timeout(struct autofs_sb_info *sbi, unsigned long __user *p) { @@ -546,7 +570,7 @@ static inline int autofs_expire_run(struct super_block *sb, * ioctl()'s on the root directory is the chief method for the daemon to * generate kernel reactions */ -static int autofs_root_ioctl(struct inode *inode, struct file *filp, +static int autofs_do_root_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { struct autofs_sb_info *sbi = autofs_sbi(inode->i_sb); @@ -571,6 +595,10 @@ static int autofs_root_ioctl(struct inode *inode, struct file *filp, return 0; case AUTOFS_IOC_PROTOVER: /* Get protocol version */ return autofs_get_protover(argp); +#ifdef CONFIG_COMPAT + case AUTOFS_IOC_SETTIMEOUT32: + return autofs_compat_get_set_timeout(sbi, argp); +#endif case AUTOFS_IOC_SETTIMEOUT: return autofs_get_set_timeout(sbi, argp); case AUTOFS_IOC_EXPIRE: @@ -579,4 +607,37 @@ static int autofs_root_ioctl(struct inode *inode, struct file *filp, default: return -ENOSYS; } + +} + +static long autofs_root_ioctl(struct file *filp, + unsigned int cmd, unsigned long arg) +{ + int ret; + + lock_kernel(); + ret = autofs_do_root_ioctl(filp->f_path.dentry->d_inode, + filp, cmd, arg); + unlock_kernel(); + + return ret; +} + +#ifdef CONFIG_COMPAT +static long autofs_root_compat_ioctl(struct file *filp, + unsigned int cmd, unsigned long arg) +{ + struct inode *inode = filp->f_path.dentry->d_inode; + int ret; + + lock_kernel(); + if (cmd == AUTOFS_IOC_READY || cmd == AUTOFS_IOC_FAIL) + ret = autofs_do_root_ioctl(inode, filp, cmd, arg); + else + ret = autofs_do_root_ioctl(inode, filp, cmd, + (unsigned long)compat_ptr(arg)); + unlock_kernel(); + + return ret; } +#endif |