add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/fs/stat.c
..
..
@@ -21,6 +21,9 @@
21
21
 #include <linux/uaccess.h>
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22
 #include <asm/unistd.h>
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23
 
24
+#include "internal.h"
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+#include "mount.h"
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+
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27
 /**
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  * generic_fillattr - Fill in the basic attributes from the inode struct
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29
  * @inode: Inode to use as the source
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..
@@ -45,20 +48,15 @@
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 	stat->ctime = inode->i_ctime;
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 	stat->blksize = i_blocksize(inode);
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50
 	stat->blocks = inode->i_blocks;
48
-
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-	if (IS_NOATIME(inode))
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-		stat->result_mask &= ~STATX_ATIME;
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-	if (IS_AUTOMOUNT(inode))
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-		stat->attributes |= STATX_ATTR_AUTOMOUNT;
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51
 }
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-EXPORT_SYMBOL(generic_fillattr);
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+EXPORT_SYMBOL_NS(generic_fillattr, ANDROID_GKI_VFS_EXPORT_ONLY);
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53
 
56
54
 /**
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55
  * vfs_getattr_nosec - getattr without security checks
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  * @path: file to get attributes from
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  * @stat: structure to return attributes in
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  * @request_mask: STATX_xxx flags indicating what the caller wants
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- * @query_flags: Query mode (KSTAT_QUERY_FLAGS)
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+ * @query_flags: Query mode (AT_STATX_SYNC_TYPE)
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  *
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  * Get attributes without calling security_inode_getattr.
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  *
..
..
@@ -73,8 +71,26 @@
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71
 
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 	memset(stat, 0, sizeof(*stat));
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 	stat->result_mask |= STATX_BASIC_STATS;
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-	request_mask &= STATX_ALL;
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-	query_flags &= KSTAT_QUERY_FLAGS;
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+	query_flags &= AT_STATX_SYNC_TYPE;
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+
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+	/* allow the fs to override these if it really wants to */
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+	/* SB_NOATIME means filesystem supplies dummy atime value */
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+	if (inode->i_sb->s_flags & SB_NOATIME)
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+		stat->result_mask &= ~STATX_ATIME;
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+
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+	/*
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+	 * Note: If you add another clause to set an attribute flag, please
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+	 * update attributes_mask below.
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+	 */
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+	if (IS_AUTOMOUNT(inode))
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+		stat->attributes |= STATX_ATTR_AUTOMOUNT;
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+
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+	if (IS_DAX(inode))
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+		stat->attributes |= STATX_ATTR_DAX;
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+
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+	stat->attributes_mask |= (STATX_ATTR_AUTOMOUNT |
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+				  STATX_ATTR_DAX);
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+
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 	if (inode->i_op->getattr)
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 		return inode->i_op->getattr(path, stat, request_mask,
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 					    query_flags);
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@@ -89,7 +105,7 @@
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  * @path: The file of interest
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  * @stat: Where to return the statistics
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  * @request_mask: STATX_xxx flags indicating what the caller wants
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- * @query_flags: Query mode (KSTAT_QUERY_FLAGS)
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+ * @query_flags: Query mode (AT_STATX_SYNC_TYPE)
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  *
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  * Ask the filesystem for a file's attributes.  The caller must indicate in
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  * request_mask and query_flags to indicate what they want.
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..
@@ -118,35 +134,27 @@
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134
 EXPORT_SYMBOL(vfs_getattr);
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135
 
120
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 /**
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- * vfs_statx_fd - Get the enhanced basic attributes by file descriptor
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+ * vfs_fstat - Get the basic attributes by file descriptor
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  * @fd: The file descriptor referring to the file of interest
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  * @stat: The result structure to fill in.
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- * @request_mask: STATX_xxx flags indicating what the caller wants
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- * @query_flags: Query mode (KSTAT_QUERY_FLAGS)
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140
  *
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  * This function is a wrapper around vfs_getattr().  The main difference is
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  * that it uses a file descriptor to determine the file location.
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  *
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  * 0 will be returned on success, and a -ve error code if unsuccessful.
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  */
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-int vfs_statx_fd(unsigned int fd, struct kstat *stat,
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-		 u32 request_mask, unsigned int query_flags)
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+int vfs_fstat(int fd, struct kstat *stat)
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 {
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 	struct fd f;
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-	int error = -EBADF;
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-
138
-	if (query_flags & ~KSTAT_QUERY_FLAGS)
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-		return -EINVAL;
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+	int error;
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150
 
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 	f = fdget_raw(fd);
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-	if (f.file) {
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-		error = vfs_getattr(&f.file->f_path, stat,
144
-				    request_mask, query_flags);
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-		fdput(f);
146
-	}
152
+	if (!f.file)
153
+		return -EBADF;
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+	error = vfs_getattr(&f.file->f_path, stat, STATX_BASIC_STATS, 0);
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+	fdput(f);
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 	return error;
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157
 }
149
-EXPORT_SYMBOL(vfs_statx_fd);
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158
 
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 /**
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  * vfs_statx - Get basic and extra attributes by filename
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@@ -163,21 +171,21 @@
163
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  *
164
172
  * 0 will be returned on success, and a -ve error code if unsuccessful.
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173
  */
166
-int vfs_statx(int dfd, const char __user *filename, int flags,
174
+static int vfs_statx(int dfd, const char __user *filename, int flags,
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175
 	      struct kstat *stat, u32 request_mask)
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176
 {
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 	struct path path;
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-	int error = -EINVAL;
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-	unsigned int lookup_flags = LOOKUP_FOLLOW | LOOKUP_AUTOMOUNT;
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+	unsigned lookup_flags = 0;
179
+	int error;
172
180
 
173
-	if ((flags & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT |
174
-		       AT_EMPTY_PATH | KSTAT_QUERY_FLAGS)) != 0)
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+	if (flags & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT | AT_EMPTY_PATH |
182
+		      AT_STATX_SYNC_TYPE))
175
183
 		return -EINVAL;
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184
 
177
-	if (flags & AT_SYMLINK_NOFOLLOW)
178
-		lookup_flags &= ~LOOKUP_FOLLOW;
179
-	if (flags & AT_NO_AUTOMOUNT)
180
-		lookup_flags &= ~LOOKUP_AUTOMOUNT;
185
+	if (!(flags & AT_SYMLINK_NOFOLLOW))
186
+		lookup_flags |= LOOKUP_FOLLOW;
187
+	if (!(flags & AT_NO_AUTOMOUNT))
188
+		lookup_flags |= LOOKUP_AUTOMOUNT;
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189
 	if (flags & AT_EMPTY_PATH)
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190
 		lookup_flags |= LOOKUP_EMPTY;
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191
 
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@@ -187,6 +195,11 @@
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195
 		goto out;
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196
 
189
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 	error = vfs_getattr(&path, stat, request_mask, flags);
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+	stat->mnt_id = real_mount(path.mnt)->mnt_id;
199
+	stat->result_mask |= STATX_MNT_ID;
200
+	if (path.mnt->mnt_root == path.dentry)
201
+		stat->attributes |= STATX_ATTR_MOUNT_ROOT;
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+	stat->attributes_mask |= STATX_ATTR_MOUNT_ROOT;
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203
 	path_put(&path);
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204
 	if (retry_estale(error, lookup_flags)) {
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205
 		lookup_flags |= LOOKUP_REVAL;
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..
@@ -195,8 +208,13 @@
195
208
 out:
196
209
 	return error;
197
210
 }
198
-EXPORT_SYMBOL(vfs_statx);
199
211
 
212
+int vfs_fstatat(int dfd, const char __user *filename,
213
+			      struct kstat *stat, int flags)
214
+{
215
+	return vfs_statx(dfd, filename, flags | AT_NO_AUTOMOUNT,
216
+			 stat, STATX_BASIC_STATS);
217
+}
200
218
 
201
219
 #ifdef __ARCH_WANT_OLD_STAT
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220
 
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@@ -280,14 +298,13 @@
280
298
 
281
299
 #endif /* __ARCH_WANT_OLD_STAT */
282
300
 
301
+#ifdef __ARCH_WANT_NEW_STAT
302
+
283
303
 #if BITS_PER_LONG == 32
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304
 #  define choose_32_64(a,b) a
285
305
 #else
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306
 #  define choose_32_64(a,b) b
287
307
 #endif
288
-
289
-#define valid_dev(x)  choose_32_64(old_valid_dev(x),true)
290
-#define encode_dev(x) choose_32_64(old_encode_dev,new_encode_dev)(x)
291
308
 
292
309
 #ifndef INIT_STRUCT_STAT_PADDING
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 #  define INIT_STRUCT_STAT_PADDING(st) memset(&st, 0, sizeof(st))
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..
@@ -297,7 +314,9 @@
297
314
 {
298
315
 	struct stat tmp;
299
316
 
300
-	if (!valid_dev(stat->dev) || !valid_dev(stat->rdev))
317
+	if (sizeof(tmp.st_dev) < 4 && !old_valid_dev(stat->dev))
318
+		return -EOVERFLOW;
319
+	if (sizeof(tmp.st_rdev) < 4 && !old_valid_dev(stat->rdev))
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320
 		return -EOVERFLOW;
302
321
 #if BITS_PER_LONG == 32
303
322
 	if (stat->size > MAX_NON_LFS)
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..
@@ -305,7 +324,7 @@
305
324
 #endif
306
325
 
307
326
 	INIT_STRUCT_STAT_PADDING(tmp);
308
-	tmp.st_dev = encode_dev(stat->dev);
327
+	tmp.st_dev = new_encode_dev(stat->dev);
309
328
 	tmp.st_ino = stat->ino;
310
329
 	if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
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330
 		return -EOVERFLOW;
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..
@@ -315,7 +334,7 @@
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 		return -EOVERFLOW;
316
335
 	SET_UID(tmp.st_uid, from_kuid_munged(current_user_ns(), stat->uid));
317
336
 	SET_GID(tmp.st_gid, from_kgid_munged(current_user_ns(), stat->gid));
318
-	tmp.st_rdev = encode_dev(stat->rdev);
337
+	tmp.st_rdev = new_encode_dev(stat->rdev);
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338
 	tmp.st_size = stat->size;
320
339
 	tmp.st_atime = stat->atime.tv_sec;
321
340
 	tmp.st_mtime = stat->mtime.tv_sec;
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..
@@ -378,6 +397,7 @@
378
397
 
379
398
 	return error;
380
399
 }
400
+#endif
381
401
 
382
402
 static int do_readlinkat(int dfd, const char __user *pathname,
383
403
 			 char __user *buf, int bufsiz)
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@@ -548,8 +568,27 @@
548
568
 	tmp.stx_rdev_minor = MINOR(stat->rdev);
549
569
 	tmp.stx_dev_major = MAJOR(stat->dev);
550
570
 	tmp.stx_dev_minor = MINOR(stat->dev);
571
+	tmp.stx_mnt_id = stat->mnt_id;
551
572
 
552
573
 	return copy_to_user(buffer, &tmp, sizeof(tmp)) ? -EFAULT : 0;
574
+}
575
+
576
+int do_statx(int dfd, const char __user *filename, unsigned flags,
577
+	     unsigned int mask, struct statx __user *buffer)
578
+{
579
+	struct kstat stat;
580
+	int error;
581
+
582
+	if (mask & STATX__RESERVED)
583
+		return -EINVAL;
584
+	if ((flags & AT_STATX_SYNC_TYPE) == AT_STATX_SYNC_TYPE)
585
+		return -EINVAL;
586
+
587
+	error = vfs_statx(dfd, filename, flags, &stat, mask);
588
+	if (error)
589
+		return error;
590
+
591
+	return cp_statx(&stat, buffer);
553
592
 }
554
593
 
555
594
 /**
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..
@@ -568,19 +607,7 @@
568
607
 		unsigned int, mask,
569
608
 		struct statx __user *, buffer)
570
609
 {
571
-	struct kstat stat;
572
-	int error;
573
-
574
-	if (mask & STATX__RESERVED)
575
-		return -EINVAL;
576
-	if ((flags & AT_STATX_SYNC_TYPE) == AT_STATX_SYNC_TYPE)
577
-		return -EINVAL;
578
-
579
-	error = vfs_statx(dfd, filename, flags, &stat, mask);
580
-	if (error)
581
-		return error;
582
-
583
-	return cp_statx(&stat, buffer);
610
+	return do_statx(dfd, filename, flags, mask, buffer);
584
611
 }
585
612
 
586
613
 #ifdef CONFIG_COMPAT
..
..
@@ -588,11 +615,13 @@
588
615
 {
589
616
 	struct compat_stat tmp;
590
617
 
591
-	if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
618
+	if (sizeof(tmp.st_dev) < 4 && !old_valid_dev(stat->dev))
619
+		return -EOVERFLOW;
620
+	if (sizeof(tmp.st_rdev) < 4 && !old_valid_dev(stat->rdev))
592
621
 		return -EOVERFLOW;
593
622
 
594
623
 	memset(&tmp, 0, sizeof(tmp));
595
-	tmp.st_dev = old_encode_dev(stat->dev);
624
+	tmp.st_dev = new_encode_dev(stat->dev);
596
625
 	tmp.st_ino = stat->ino;
597
626
 	if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
598
627
 		return -EOVERFLOW;
..
..
@@ -602,7 +631,7 @@
602
631
 		return -EOVERFLOW;
603
632
 	SET_UID(tmp.st_uid, from_kuid_munged(current_user_ns(), stat->uid));
604
633
 	SET_GID(tmp.st_gid, from_kgid_munged(current_user_ns(), stat->gid));
605
-	tmp.st_rdev = old_encode_dev(stat->rdev);
634
+	tmp.st_rdev = new_encode_dev(stat->rdev);
606
635
 	if ((u64) stat->size > MAX_NON_LFS)
607
636
 		return -EOVERFLOW;
608
637
 	tmp.st_size = stat->size;