linux-master/fs/init.c

47 	int error;
49 	error = kern_path(filename, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &path);
50 	if (error)
51 		return error;
52 	error = path_permission(&path, MAY_EXEC | MAY_CHDIR);
53 	if (!error)
56 	return error;
62 	int error;
64 	error = kern_path(filename, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &path);
65 	if (error)
66 		return error;
67 	error = path_permission(&path, MAY_EXEC | MAY_CHDIR);
68 	if (error)
70 	error = -EPERM;
73 	error = security_path_chroot(&path);
74 	if (error)
79 	return error;
86 	int error;
88 	error = kern_path(filename, lookup_flags, &path);
89 	if (error)
90 		return error;
91 	error = mnt_want_write(path.mnt);
92 	if (!error) {
93 		error = chown_common(&path, user, group);
97 	return error;
103 	int error;
105 	error = kern_path(filename, LOOKUP_FOLLOW, &path);
106 	if (error)
107 		return error;
108 	error = chmod_common(&path, mode);
110 	return error;
116 	int error;
118 	error = kern_path(filename, LOOKUP_FOLLOW, &path);
119 	if (error)
120 		return error;
121 	error = path_permission(&path, MAY_ACCESS);
123 	return error;
130 	int error;
132 	error = kern_path(filename, lookup_flags, &path);
133 	if (error)
134 		return error;
135 	error = vfs_getattr(&path, stat, STATX_BASIC_STATS,
138 	return error;
145 	int error;
157 	error = security_path_mknod(&path, dentry, mode, dev);
158 	if (!error)
159 		error = vfs_mknod(mnt_idmap(path.mnt), path.dentry->d_inode,
162 	return error;
170 	int error;
172 	error = kern_path(oldname, 0, &old_path);
173 	if (error)
174 		return error;
177 	error = PTR_ERR(new_dentry);
181 	error = -EXDEV;
185 	error = may_linkat(idmap, &old_path);
186 	if (unlikely(error))
188 	error = security_path_link(old_path.dentry, &new_path, new_dentry);
189 	if (error)
191 	error = vfs_link(old_path.dentry, idmap, new_path.dentry->d_inode,
197 	return error;
204 	int error;
209 	error = security_path_symlink(&path, dentry, oldname);
210 	if (!error)
211 		error = vfs_symlink(mnt_idmap(path.mnt), path.dentry->d_inode,
214 	return error;
226 	int error;
232 	error = security_path_mkdir(&path, dentry, mode);
233 	if (!error)
234 		error = vfs_mkdir(mnt_idmap(path.mnt), path.dentry->d_inode,
237 	return error;
248 	int error;
250 	error = kern_path(filename, 0, &path);
251 	if (error)
252 		return error;
253 	error = vfs_utimes(&path, ts);
255 	return error;