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/linux/rust/kernel/fs/
H A Dfile.rs5 //! Files and file descriptors.
8 //! [`include/linux/file.h`](srctree/include/linux/file.h)
20 /// Primitive type representing the offset within a [`File`].
25 /// Flags associated with a [`File`].
27 /// File is opened in append mode.
36 /// File was created if it didn't already exist.
39 /// Direct I/O is enabled for this file.
42 /// File must be a directory.
48 /// Ensure that this file is created with the `open(2)` call.
51 /// Large file size enabled (`off64_t` over `off_t`).
[all …]
/linux/drivers/scsi/fnic/
H A Dfnic_debugfs.c38 * file system. If not already created, this routine will create the
68 * When Debugfs is configured this routine removes debugfs file system
85 * or fc_trace_clear debugfs file
86 * @filp: The file pointer to read from.
89 * @ppos: The position in the file to start reading from.
95 * It will start reading file at @ppos and
101 static ssize_t fnic_trace_ctrl_read(struct file *filp, in fnic_trace_ctrl_read()
117 pr_err("fnic: Cannot read to any debugfs file\n"); in fnic_trace_ctrl_read()
125 * fc_trace_clear debugfs file
126 * @filp: The file pointer to write from.
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/linux/drivers/infiniband/core/
H A Duser_mad.c9 * General Public License (GPL) Version 2, available from the file
81 * device special file is opened, we take a reference on the
174 static int hdr_size(struct ib_umad_file *file) in hdr_size() argument
176 return file->use_pkey_index ? sizeof(struct ib_user_mad_hdr) : in hdr_size()
180 /* caller must hold file->mutex */
181 static struct ib_mad_agent *__get_agent(struct ib_umad_file *file, int id) in __get_agent() argument
183 return file->agents_dead ? NULL : file->agent[id]; in __get_agent()
186 static int queue_packet(struct ib_umad_file *file, struct ib_mad_agent *agent, in queue_packet() argument
191 mutex_lock(&file->mutex); in queue_packet()
194 atomic_read(&file->recv_list_size) > MAX_UMAD_RECV_LIST_SIZE) in queue_packet()
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/linux/tools/testing/selftests/rcutorture/bin/
H A Dparse-console.sh5 # The "file" is a pathname on the local system, and "title" is
8 # Usage: parse-console.sh file title
15 file="$1"
22 # Check for presence and readability of console output file
23 if test -f "$file" -a -r "$file"
27 echo $title unreadable console output file: $file
30 if grep -Pq '\x00' < $file
34 cat /dev/null > $file
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/linux/drivers/gpu/drm/i915/gt/
H A Dshmem_utils.c17 struct file *shmem_create_from_data(const char *name, void *data, size_t len) in shmem_create_from_data()
19 struct file *file; in shmem_create_from_data() local
22 file = shmem_file_setup(name, PAGE_ALIGN(len), in shmem_create_from_data()
24 if (IS_ERR(file)) in shmem_create_from_data()
25 return file; in shmem_create_from_data()
27 err = shmem_write(file, 0, data, len); in shmem_create_from_data()
29 fput(file); in shmem_create_from_data()
33 return file; in shmem_create_from_data()
36 struct file *shmem_create_from_object(struct drm_i915_gem_object *obj) in shmem_create_from_object()
39 struct file *file; in shmem_create_from_object() local
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/linux/fs/ceph/
H A Dioctl.c16 * get and set the file layout
18 static long ceph_ioctl_get_layout(struct file *file, void __user *arg) in ceph_ioctl_get_layout() argument
20 struct ceph_inode_info *ci = ceph_inode(file_inode(file)); in ceph_ioctl_get_layout()
24 err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT, false); in ceph_ioctl_get_layout()
65 static long ceph_ioctl_set_layout(struct file *file, void __user *arg) in ceph_ioctl_set_layout() argument
67 struct inode *inode = file_inode(file); in ceph_ioctl_set_layout()
71 struct ceph_inode_info *ci = ceph_inode(file_inode(file)); in ceph_ioctl_set_layout()
79 err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT, false); in ceph_ioctl_set_layout()
137 static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg) in ceph_ioctl_set_layout_policy() argument
139 struct inode *inode = file_inode(file); in ceph_ioctl_set_layout_policy()
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/linux/fs/proc/
H A Dinode.c19 #include <linux/file.h>
226 * "struct file" needs to be available at the right moment. in close_pdeo()
235 struct file *file; in close_pdeo() local
241 file = pdeo->file; in close_pdeo()
242 pde->proc_ops->proc_release(file_inode(file), file); in close_pdeo()
275 static loff_t proc_reg_llseek(struct file *file, loff_t offset, int whence) in proc_reg_llseek() argument
277 struct proc_dir_entry *pde = PDE(file_inode(file)); in proc_reg_llseek()
281 return pde->proc_ops->proc_lseek(file, offset, whence); in proc_reg_llseek()
283 rv = pde->proc_ops->proc_lseek(file, offset, whence); in proc_reg_llseek()
304 static ssize_t pde_read(struct proc_dir_entry *pde, struct file *file, char __user *buf, size_t cou… in pde_read() argument
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/linux/drivers/gpu/drm/
H A Ddrm_file.c37 #include <linux/file.h>
72 * DOC: file operations
74 * Drivers must define the file operations structure that forms the DRM
87 * userspace through the file descriptor. They are used to send vblank event and
97 * No other file operations are supported by the DRM userspace API. Overall the
122 * drm_file_alloc - allocate file context
125 * This allocates a new DRM file context. It is not linked into any context and
136 struct drm_file *file; in drm_file_alloc() local
139 file = kzalloc_obj(*file); in drm_file_alloc()
140 if (!file) in drm_file_alloc()
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/linux/kernel/liveupdate/
H A Dluo_file.c9 * DOC: LUO File Descriptors
11 * LUO provides the infrastructure to preserve specific, stateful file
17 * defined lifecycle for each preserved file.
20 * Kernel modules responsible for a specific file type (e.g., memfd, vfio)
26 * compatible with a given 'struct file'.
27 * - preserve(): The heavyweight operation that saves the file's state and
36 * the file anymore.
39 * - retrieve(): Reconstructs the file in the new kernel from the preserved
42 * succesul finish call, LUO gives up ownership to this file.
44 * File Preservation Lifecycle happy path:
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/linux/fs/
H A Dkernel_read_file.c9 * kernel_read_file() - read file contents into a kernel buffer
11 * @file: file to read from
18 * @file_size: if non-NULL, the full size of @file will be
21 * file contents being read (for LSMs to examine)
24 * (i.e. the caller must be expecting to read partial file contents
26 * will be able to determine when the entire file was read by
28 * file, though, since it is possible that the contents might
35 ssize_t kernel_read_file(struct file *file, loff_t offset, void **buf, in kernel_read_file() argument
48 if (!S_ISREG(file_inode(file)->i_mode)) in kernel_read_file()
51 ret = deny_write_access(file); in kernel_read_file()
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/linux/include/linux/
H A Dfsnotify.h104 * is on a file/dentry.
116 static inline int fsnotify_file(struct file *file, __u32 mask) in fsnotify_file() argument
122 * handle creation / destruction events and not "real" file events. in fsnotify_file()
124 if (FMODE_FSNOTIFY_NONE(file->f_mode)) in fsnotify_file()
127 return fsnotify_path(&file->f_path, mask); in fsnotify_file()
132 int fsnotify_open_perm_and_set_mode(struct file *file);
135 * fsnotify_file_area_perm - permission hook before access to file range
137 static inline int fsnotify_file_area_perm(struct file *file, int perm_mask, in fsnotify_file_area_perm() argument
142 * (e.g. by HSM filling a file on access), so sb freeze protection in fsnotify_file_area_perm()
145 lockdep_assert_once(file_write_not_started(file)); in fsnotify_file_area_perm()
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H A Dfile.h16 struct file;
18 extern void fput(struct file *);
26 extern struct file *alloc_file_pseudo(struct inode *, struct vfsmount *,
28 extern struct file *alloc_file_pseudo_noaccount(struct inode *, struct vfsmount *,
30 extern struct file *alloc_file_clone(struct file *, int flags,
33 /* either a reference to struct file + flags
44 #define fd_file(f) ((struct file *)((f).word & ~(FDPUT_FPUT|FDPUT_POS_UNLOCK)))
51 static inline struct fd BORROWED_FD(struct file *f) in BORROWED_FD()
55 static inline struct fd CLONED_FD(struct file *f) in CLONED_FD()
66 extern struct file *fget(unsigned int fd);
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H A Deventpoll.h16 struct file;
22 struct file *get_epoll_tfile_raw_ptr(struct file *file, int tfd, unsigned long toff);
25 /* Used to release the epoll bits inside the "struct file" */
26 void eventpoll_release_file(struct file *file);
29 int epoll_sendevents(struct file *file, struct epoll_event __user *events,
38 static inline void eventpoll_release(struct file *file) in eventpoll_release() argument
43 * file was never attached to an epoll. Safe without file->f_lock in eventpoll_release()
45 * @file: in eventpoll_release()
46 * - ep_insert() requires the file alive (refcount > 0); in eventpoll_release()
47 * - ep_remove() holds @file pinned via epi_fget() across the in eventpoll_release()
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/linux/drivers/net/wireless/marvell/libertas/
H A Ddebugfs.c25 static ssize_t write_file_dummy(struct file *file, const char __user *buf, in write_file_dummy() argument
33 static ssize_t lbs_dev_info(struct file *file, char __user *userbuf, in lbs_dev_info() argument
36 struct lbs_private *priv = file->private_data; in lbs_dev_info()
55 static ssize_t lbs_sleepparams_write(struct file *file, in lbs_sleepparams_write() argument
59 struct lbs_private *priv = file->private_data; in lbs_sleepparams_write()
92 static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf, in lbs_sleepparams_read() argument
95 struct lbs_private *priv = file->private_data; in lbs_sleepparams_read()
120 static ssize_t lbs_host_sleep_write(struct file *file, in lbs_host_sleep_write() argument
124 struct lbs_private *priv = file->private_data; in lbs_host_sleep_write()
162 static ssize_t lbs_host_sleep_read(struct file *file, char __user *userbuf, in lbs_host_sleep_read() argument
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/linux/tools/perf/util/
H A Ddata.c23 static void perf_data_file__close(struct perf_data_file *file) in close_dir()
25 if (file->use_stdio) { in close_dir()
26 if (file->fptr) { in close_dir()
27 fclose(file->fptr); in close_dir()
28 file->fptr = NULL; in close_dir()
31 close(file->fd);
32 file->fd = -1; in perf_data__close_dir()
34 zfree(&file->path); in perf_data__close_dir()
66 struct perf_data_file *file = &files[i]; in perf_data__create_dir()
68 ret = asprintf(&file in perf_data__create_dir()
51 struct perf_data_file *file = &files[i]; perf_data__create_dir() local
115 struct perf_data_file *file; perf_data__open_dir() local
385 perf_data_file__write(struct perf_data_file * file,void * buf,size_t size) perf_data_file__write() argument
449 struct perf_data_file *file = &data->dir.files[i]; perf_data__size() local
531 FILE *file; is_perf_data() local
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/linux/drivers/media/pci/ivtv/
H A Divtv-ioctl.c309 static int ivtv_g_fmt_sliced_vbi_out(struct file *file, void *fh, struct v4l2_format *fmt) in ivtv_g_fmt_sliced_vbi_out() argument
311 struct ivtv *itv = file2id(file)->itv; in ivtv_g_fmt_sliced_vbi_out()
331 static int ivtv_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) in ivtv_g_fmt_vid_cap() argument
333 struct ivtv_open_id *id = file2id(file); in ivtv_g_fmt_vid_cap()
354 static int ivtv_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) in ivtv_g_fmt_vbi_cap() argument
356 struct ivtv *itv = file2id(file)->itv; in ivtv_g_fmt_vbi_cap()
372 static int ivtv_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) in ivtv_g_fmt_sliced_vbi_cap() argument
375 struct ivtv_open_id *id = file2id(file); in ivtv_g_fmt_sliced_vbi_cap()
395 static int ivtv_g_fmt_vid_out(struct file *file, void *fh, struct v4l2_format *fmt) in ivtv_g_fmt_vid_out() argument
397 struct ivtv_open_id *id = file2id(file); in ivtv_g_fmt_vid_out()
[all …]
/linux/fs/ocfs2/
H A Dlocks.c5 * Userspace file locking support
19 #include "file.h"
23 static int ocfs2_do_flock(struct file *file, struct inode *inode, in ocfs2_do_flock() argument
27 struct ocfs2_file_private *fp = file->private_data; in ocfs2_do_flock()
58 locks_lock_file_wait(file, &request); in ocfs2_do_flock()
60 ocfs2_file_unlock(file); in ocfs2_do_flock()
63 ret = ocfs2_file_lock(file, level, trylock); in ocfs2_do_flock()
72 ret = locks_lock_file_wait(file, fl); in ocfs2_do_flock()
74 ocfs2_file_unlock(file); in ocfs2_do_flock()
82 static int ocfs2_do_funlock(struct file *file, int cmd, struct file_lock *fl) in ocfs2_do_funlock() argument
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/linux/security/integrity/ima/
H A Dima_main.c13 * File: ima_main.c
19 #include <linux/file.h>
105 /* Prevent mmap'ing a file execute that is already mmap'ed write */
106 static int mmap_violation_check(enum ima_hooks func, struct file *file, in mmap_violation_check() argument
114 mapping_writably_mapped(file->f_mapping)) { in mmap_violation_check()
116 inode = file_inode(file); in mmap_violation_check()
119 *pathname = ima_d_path(&file->f_path, pathbuf, in mmap_violation_check()
131 * - Opening a file for write when already open for read,
133 * - Opening a file fo
137 ima_rdwr_violation_check(struct file * file,struct ima_iint_cache * iint,int must_measure,char ** pathbuf,const char ** pathname,char * filename) ima_rdwr_violation_check() argument
184 ima_check_last_writer(struct ima_iint_cache * iint,struct inode * inode,struct file * file) ima_check_last_writer() argument
221 ima_file_free(struct file * file) ima_file_free() argument
236 process_measurement(struct file * file,const struct cred * cred,struct lsm_prop * prop,char * buf,loff_t size,int mask,enum ima_hooks func,enum kernel_read_file_id read_id) process_measurement() argument
483 ima_file_mmap(struct file * file,unsigned long reqprot,unsigned long prot,unsigned long flags) ima_file_mmap() argument
526 struct file *file; ima_file_mprotect() local
611 ima_creds_check(struct linux_binprm * bprm,const struct file * file) ima_creds_check() argument
658 ima_file_check(struct file * file,int mask) ima_file_check() argument
668 __ima_inode_hash(struct inode * inode,struct file * file,char * buf,size_t buf_size) __ima_inode_hash() argument
745 ima_file_hash(struct file * file,char * buf,size_t buf_size) ima_file_hash() argument
858 ima_read_file(struct file * file,enum kernel_read_file_id read_id,bool contents) ima_read_file() argument
909 ima_post_read_file(struct file * file,char * buf,loff_t size,enum kernel_read_file_id read_id) ima_post_read_file() argument
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/linux/tools/power/acpi/tools/acpidump/
H A Dapfiles.c4 * Module Name: apfiles - File-related functions for acpidump utility
24 * DESCRIPTION: Query for file overwrite if it already exists.
58 * RETURN: Open file handle
60 * DESCRIPTION: Open a text output file for acpidump. Checks if file already
67 ACPI_FILE file; in ap_open_output_file() local
69 /* If file exists, prompt for overwrite */ in ap_open_output_file()
75 /* Point stdout to the file */ in ap_open_output_file()
77 file = fopen(pathname, "w"); in ap_open_output_file()
78 if (!file) { in ap_open_output_file()
79 fprintf(stderr, "Could not open output file: %s\n", pathname); in ap_open_output_file()
[all …]
/linux/security/tomoyo/
H A Dsecurityfs_if.c31 * @file: Pointer to "struct file".
41 static ssize_t tomoyo_write_self(struct file *file, const char __user *buf, in tomoyo_write_self() argument
93 * @file: Pointer to "struct file".
100 static ssize_t tomoyo_read_self(struct file *file, char __user *buf, in tomoyo_read_self() argument
128 * @file: Pointer to "struct file".
132 static int tomoyo_open(struct inode *inode, struct file *file) in tomoyo_open() argument
134 const u8 key = (uintptr_t) file_inode(file)->i_private; in tomoyo_open()
136 return tomoyo_open_control(key, file); in tomoyo_open()
143 * @file: Pointer to "struct file".
146 static int tomoyo_release(struct inode *inode, struct file *file) in tomoyo_release() argument
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/linux/tools/objtool/
H A Dcheck.c41 struct instruction *find_insn(struct objtool_file *file, in find_insn() argument
46 hash_for_each_possible(file->insn_hash, insn, hash, sec_offset_hash(sec, offset)) { in find_insn()
54 struct instruction *next_insn_same_sec(struct objtool_file *file, in next_insn_same_sec() argument
58 return find_insn(file, insn->sec, insn->offset + insn->len); in next_insn_same_sec()
67 static struct instruction *next_insn_same_func(struct objtool_file *file, in next_insn_same_func() argument
70 struct instruction *next = next_insn_same_sec(file, insn); in next_insn_same_func()
84 return find_insn(file, func->cfunc->sec, func->cfunc->offset); in next_insn_same_func()
87 static struct instruction *prev_insn_same_sec(struct objtool_file *file, in prev_insn_same_sec() argument
92 return find_insn(file, insn->sec, insn->offset - insn->prev_len); in prev_insn_same_sec()
99 static struct instruction *prev_insn_same_sym(struct objtool_file *file, in prev_insn_same_sym() argument
[all …]
/linux/fs/gfs2/
H A Dfile.c47 * gfs2_llseek - seek to a location in a file
48 * @file: the file
52 * SEEK_END requires the glock for the file because it references the
53 * file's size.
58 static loff_t gfs2_llseek(struct file *file, loff_t offset, int whence) in gfs2_llseek() argument
60 struct gfs2_inode *ip = GFS2_I(file->f_mapping->host); in gfs2_llseek()
69 error = generic_file_llseek(file, offset, whence); in gfs2_llseek()
75 error = gfs2_seek_data(file, offset); in gfs2_llseek()
79 error = gfs2_seek_hole(file, offset); in gfs2_llseek()
88 error = generic_file_llseek(file, offset, whence); in gfs2_llseek()
[all …]
/linux/Documentation/filesystems/
H A Dzonefs.rst10 zonefs is a very simple file system exposing each zone of a zoned block device
11 as a file. Unlike a regular POSIX-compliant file system with native zoned block
15 of the file (append only writes).
18 than to a full-featured POSIX file system. The goal of zonefs is to simplify
20 raw block device file accesses with a richer file API, avoiding relying on
21 direct block device file ioctls which may be more obscure to developers. One
24 by allowing SSTables to be stored in a zone file similarly to a regular file
26 of the higher level construct "one file is one zone" can help reducing the
62 by sub-directories. This file structure is built entirely using zone information
72 and populates the mount point with a static file tree solely based on this
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/linux/mm/
H A Dmemfd_luo.c17 * Memory file descriptors (memfd) can be preserved over a kexec using the Live
18 * Update Orchestrator (LUO) file preservation. This allows userspace to
22 * the file are preserved. All others are reset to default. The preserved
38 * File Contents
39 * All data stored in the file is preserved.
41 * File Size
42 * The size of the file is preserved. Holes in the file are filled by
45 * File Position
46 * The current file position is preserved, allowing applications to continue
49 * File Status Flags
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/linux/drivers/media/pci/cx18/
H A Dcx18-ioctl.c52 static int cx18_g_fmt_vid_cap(struct file *file, void *fh, in cx18_g_fmt_vid_cap() argument
55 struct cx18_open_id *id = file2id(file); in cx18_g_fmt_vid_cap()
76 static int cx18_try_fmt_vid_cap(struct file *file, void *fh, in cx18_try_fmt_vid_cap() argument
79 struct cx18_open_id *id = file2id(file); in cx18_try_fmt_vid_cap()
121 static int cx18_s_fmt_vid_cap(struct file *file, void *fh, in cx18_s_fmt_vid_cap() argument
124 struct cx18_open_id *id = file2id(file); in cx18_s_fmt_vid_cap()
133 ret = cx18_try_fmt_vid_cap(file, fh, fmt); in cx18_s_fmt_vid_cap()
154 return cx18_g_fmt_vid_cap(file, fh, fmt); in cx18_s_fmt_vid_cap()
261 static int cx18_g_fmt_vbi_cap(struct file *file, void *fh, in cx18_g_fmt_vbi_cap() argument
264 struct cx18 *cx = file2id(file)->cx; in cx18_g_fmt_vbi_cap()
[all …]

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