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fs: Add fs_mkfs operation to fs api

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Adds fs_mkfs function to fs api. It will allow to perform mkfs operation
in file systems added to Zephyr.

Signed-off-by: Franciszek Zdobylak <fzdobylak@internships.antmicro.com>
This commit is contained in:
Franciszek Zdobylak 2022-10-24 08:36:32 +02:00 • committed by Carles Cufí
commit 7a96ed2771
4 changed files with 64 additions and 0 deletions
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17
include/zephyr/fs/fs.h
View file

@ -605,6 +605,23 @@ int fs_stat(const char *path, struct fs_dirent *entry);
*/ */
int fs_statvfs(const char *path, struct fs_statvfs *stat); int fs_statvfs(const char *path, struct fs_statvfs *stat);
#if defined(CONFIG_FILE_SYSTEM_MKFS)
/**
* @brief Create fresh file system
*
* @param fs_type Type of file system to create.
* @param dev_id Id of storage device.
* @param cfg Backend dependent init object. If NULL then default configuration is used.
* @param flags Additional flags for file system implementation.
*
* @retval 0 on success;
* @retval <0 negative errno code on error.
*/
int fs_mkfs(int fs_type, uintptr_t dev_id, void *cfg, int flags);
#endif /* CONFIG_FILE_SYSTEM_MKFS */
/** /**
* @brief Register a file system * @brief Register a file system
* *

5
include/zephyr/fs/fs_sys.h
View file

@ -38,6 +38,8 @@ extern "C" {
* @param stat Checks the status of a file or directory specified by the path * @param stat Checks the status of a file or directory specified by the path
* @param statvfs Returns the total and available space on the file system * @param statvfs Returns the total and available space on the file system
* volume * volume
* @param mkfs Formats a device to specified file system type. Note that this
* operation destroys existing data on a target device.
*/ */
struct fs_file_system_t { struct fs_file_system_t {
/* File operations */ /* File operations */
@ -66,6 +68,9 @@ struct fs_file_system_t {
struct fs_dirent *entry); struct fs_dirent *entry);
int (*statvfs)(struct fs_mount_t *mountp, const char *path, int (*statvfs)(struct fs_mount_t *mountp, const char *path,
struct fs_statvfs *stat); struct fs_statvfs *stat);
#if defined(CONFIG_FILE_SYSTEM_MKFS)
int (*mkfs)(uintptr_t dev_id, void *cfg, int flags);
#endif
}; };
/** /**

6
subsys/fs/Kconfig
View file

@ -51,6 +51,12 @@ config FILE_SYSTEM_SHELL
This shell provides basic browsing of the contents of the This shell provides basic browsing of the contents of the
file system. file system.
config FILE_SYSTEM_MKFS
bool "Allow to format file system"
help
Enables function fs_mkfs that can be used to format a storage
device.
config FUSE_FS_ACCESS config FUSE_FS_ACCESS
bool "FUSE based access to file system partitions" bool "FUSE based access to file system partitions"
depends on ARCH_POSIX depends on ARCH_POSIX

36
subsys/fs/fs.c
View file

@ -721,6 +721,42 @@ mount_err:
return rc; return rc;
} }
#if defined(CONFIG_FILE_SYSTEM_MKFS)
int fs_mkfs(int fs_type, uintptr_t dev_id, void *cfg, int flags)
{
int rc = -EINVAL;
const struct fs_file_system_t *fs;
k_mutex_lock(&mutex, K_FOREVER);
/* Get file system information */
fs = fs_type_get(fs_type);
if (fs == NULL) {
LOG_ERR("fs type %d not registered!!",
fs_type);
rc = -ENOENT;
goto mount_err;
}
CHECKIF(fs->mkfs == NULL) {
LOG_ERR("fs type %d does not support mkfs", fs_type);
rc = -ENOTSUP;
goto mount_err;
}
rc = fs->mkfs(dev_id, cfg, flags);
if (rc < 0) {
LOG_ERR("mkfs error (%d)", rc);
goto mount_err;
}
mount_err:
k_mutex_unlock(&mutex);
return rc;
}
#endif /* CONFIG_FILE_SYSTEM_MKFS */
int fs_unmount(struct fs_mount_t *mp) int fs_unmount(struct fs_mount_t *mp)
{ {