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-rw-r--r--fs/compat.c42
1 files changed, 24 insertions, 18 deletions
diff --git a/fs/compat.c b/fs/compat.c
index ed43e17a5dc6..c9d1472e65c5 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -197,8 +197,8 @@ static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs *
197{ 197{
198 198
199 if (sizeof ubuf->f_blocks == 4) { 199 if (sizeof ubuf->f_blocks == 4) {
200 if ((kbuf->f_blocks | kbuf->f_bfree | kbuf->f_bavail) & 200 if ((kbuf->f_blocks | kbuf->f_bfree | kbuf->f_bavail |
201 0xffffffff00000000ULL) 201 kbuf->f_bsize | kbuf->f_frsize) & 0xffffffff00000000ULL)
202 return -EOVERFLOW; 202 return -EOVERFLOW;
203 /* f_files and f_ffree may be -1; it's okay 203 /* f_files and f_ffree may be -1; it's okay
204 * to stuff that into 32 bits */ 204 * to stuff that into 32 bits */
@@ -234,18 +234,18 @@ static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs *
234 * The following statfs calls are copies of code from fs/open.c and 234 * The following statfs calls are copies of code from fs/open.c and
235 * should be checked against those from time to time 235 * should be checked against those from time to time
236 */ 236 */
237asmlinkage long compat_sys_statfs(const char __user *path, struct compat_statfs __user *buf) 237asmlinkage long compat_sys_statfs(const char __user *pathname, struct compat_statfs __user *buf)
238{ 238{
239 struct nameidata nd; 239 struct path path;
240 int error; 240 int error;
241 241
242 error = user_path_walk(path, &nd); 242 error = user_path(pathname, &path);
243 if (!error) { 243 if (!error) {
244 struct kstatfs tmp; 244 struct kstatfs tmp;
245 error = vfs_statfs(nd.path.dentry, &tmp); 245 error = vfs_statfs(path.dentry, &tmp);
246 if (!error) 246 if (!error)
247 error = put_compat_statfs(buf, &tmp); 247 error = put_compat_statfs(buf, &tmp);
248 path_put(&nd.path); 248 path_put(&path);
249 } 249 }
250 return error; 250 return error;
251} 251}
@@ -271,8 +271,8 @@ out:
271static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstatfs *kbuf) 271static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstatfs *kbuf)
272{ 272{
273 if (sizeof ubuf->f_blocks == 4) { 273 if (sizeof ubuf->f_blocks == 4) {
274 if ((kbuf->f_blocks | kbuf->f_bfree | kbuf->f_bavail) & 274 if ((kbuf->f_blocks | kbuf->f_bfree | kbuf->f_bavail |
275 0xffffffff00000000ULL) 275 kbuf->f_bsize | kbuf->f_frsize) & 0xffffffff00000000ULL)
276 return -EOVERFLOW; 276 return -EOVERFLOW;
277 /* f_files and f_ffree may be -1; it's okay 277 /* f_files and f_ffree may be -1; it's okay
278 * to stuff that into 32 bits */ 278 * to stuff that into 32 bits */
@@ -299,21 +299,21 @@ static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstat
299 return 0; 299 return 0;
300} 300}
301 301
302asmlinkage long compat_sys_statfs64(const char __user *path, compat_size_t sz, struct compat_statfs64 __user *buf) 302asmlinkage long compat_sys_statfs64(const char __user *pathname, compat_size_t sz, struct compat_statfs64 __user *buf)
303{ 303{
304 struct nameidata nd; 304 struct path path;
305 int error; 305 int error;
306 306
307 if (sz != sizeof(*buf)) 307 if (sz != sizeof(*buf))
308 return -EINVAL; 308 return -EINVAL;
309 309
310 error = user_path_walk(path, &nd); 310 error = user_path(pathname, &path);
311 if (!error) { 311 if (!error) {
312 struct kstatfs tmp; 312 struct kstatfs tmp;
313 error = vfs_statfs(nd.path.dentry, &tmp); 313 error = vfs_statfs(path.dentry, &tmp);
314 if (!error) 314 if (!error)
315 error = put_compat_statfs64(buf, &tmp); 315 error = put_compat_statfs64(buf, &tmp);
316 path_put(&nd.path); 316 path_put(&path);
317 } 317 }
318 return error; 318 return error;
319} 319}
@@ -2131,9 +2131,9 @@ asmlinkage long compat_sys_epoll_pwait(int epfd,
2131 2131
2132#ifdef CONFIG_SIGNALFD 2132#ifdef CONFIG_SIGNALFD
2133 2133
2134asmlinkage long compat_sys_signalfd(int ufd, 2134asmlinkage long compat_sys_signalfd4(int ufd,
2135 const compat_sigset_t __user *sigmask, 2135 const compat_sigset_t __user *sigmask,
2136 compat_size_t sigsetsize) 2136 compat_size_t sigsetsize, int flags)
2137{ 2137{
2138 compat_sigset_t ss32; 2138 compat_sigset_t ss32;
2139 sigset_t tmp; 2139 sigset_t tmp;
@@ -2148,9 +2148,15 @@ asmlinkage long compat_sys_signalfd(int ufd,
2148 if (copy_to_user(ksigmask, &tmp, sizeof(sigset_t))) 2148 if (copy_to_user(ksigmask, &tmp, sizeof(sigset_t)))
2149 return -EFAULT; 2149 return -EFAULT;
2150 2150
2151 return sys_signalfd(ufd, ksigmask, sizeof(sigset_t)); 2151 return sys_signalfd4(ufd, ksigmask, sizeof(sigset_t), flags);
2152} 2152}
2153 2153
2154asmlinkage long compat_sys_signalfd(int ufd,
2155 const compat_sigset_t __user *sigmask,
2156 compat_size_t sigsetsize)
2157{
2158 return compat_sys_signalfd4(ufd, sigmask, sigsetsize, 0);
2159}
2154#endif /* CONFIG_SIGNALFD */ 2160#endif /* CONFIG_SIGNALFD */
2155 2161
2156#ifdef CONFIG_TIMERFD 2162#ifdef CONFIG_TIMERFD