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fs: make file system description const

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There's no reason the table of pointers to file system functions needs
to be mutable at runtime.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
This commit is contained in:
Peter A. Bigot 2020-06-01 11:36:52 -05:00 • committed by Carles Cufí
commit 353336d632
5 changed files with 10 additions and 10 deletions
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4
doc/reference/file_system/index.rst
View file

@ -16,9 +16,9 @@ pulled out through a file system registration API.
.. code-block:: c
int fs_register(enum fs_type type, struct fs_file_system_t *fs);
int fs_register(enum fs_type type, const struct fs_file_system_t *fs);
int fs_unregister(enum fs_type type, struct fs_file_system_t *fs);
int fs_unregister(enum fs_type type, const struct fs_file_system_t *fs);
Zephyr RTOS supports multiple instances of a file system by making use of
the mount point as the disk volume name, which is used by the file system library

4
include/fs/fs.h
View file

@ -494,7 +494,7 @@ int fs_statvfs(const char *path, struct fs_statvfs *stat);
* @retval 0 Success
* @retval -ERRNO errno code if error
*/
int fs_register(enum fs_type type, struct fs_file_system_t *fs);
int fs_register(enum fs_type type, const struct fs_file_system_t *fs);
/**
* @brief Unregister a file system
@ -507,7 +507,7 @@ int fs_register(enum fs_type type, struct fs_file_system_t *fs);
* @retval 0 Success
* @retval -ERRNO errno code if error
*/
int fs_unregister(enum fs_type type, struct fs_file_system_t *fs);
int fs_unregister(enum fs_type type, const struct fs_file_system_t *fs);
/**
* @}

2
subsys/fs/fat_fs.c
View file

@ -407,7 +407,7 @@ static int fatfs_unmount(struct fs_mount_t *mountp)
}
/* File system interface */
static struct fs_file_system_t fatfs_fs = {
static const struct fs_file_system_t fatfs_fs = {
.open = fatfs_open,
.close = fatfs_close,
.read = fatfs_read,

8
subsys/fs/fs.c
View file

@ -24,7 +24,7 @@ static sys_dlist_t fs_mnt_list;
static struct k_mutex mutex;
/* file system map table */
static struct fs_file_system_t *fs_map[FS_TYPE_END];
static const struct fs_file_system_t *fs_map[FS_TYPE_END];
static int fs_get_mnt_point(struct fs_mount_t **mnt_pntp,
const char *name, size_t *match_len)
@ -526,7 +526,7 @@ int fs_statvfs(const char *abs_path, struct fs_statvfs *stat)
int fs_mount(struct fs_mount_t *mp)
{
struct fs_mount_t *itr;
struct fs_file_system_t *fs;
const struct fs_file_system_t *fs;
sys_dnode_t *node;
int rc = -EINVAL;
@ -664,7 +664,7 @@ int fs_readmount(int *number, const char **name)
}
/* Register File system */
int fs_register(enum fs_type type, struct fs_file_system_t *fs)
int fs_register(enum fs_type type, const struct fs_file_system_t *fs)
{
int rc = 0;
@ -682,7 +682,7 @@ reg_err:
}
/* Unregister File system */
int fs_unregister(enum fs_type type, struct fs_file_system_t *fs)
int fs_unregister(enum fs_type type, const struct fs_file_system_t *fs)
{
int rc = 0;

2
subsys/fs/littlefs_fs.c
View file

@ -722,7 +722,7 @@ static int littlefs_unmount(struct fs_mount_t *mountp)
}
/* File system interface */
static struct fs_file_system_t littlefs_fs = {
static const struct fs_file_system_t littlefs_fs = {
.open = littlefs_open,
.close = littlefs_close,
.read = littlefs_read,