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sys/fs/constfs: drop dummy implementations

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VFS will handle it if those functions are not implemented.
This commit is contained in:
Benjamin Valentin 2022-02-14 13:36:45 +01:00
parent ec0df56b67
commit 991f8e8c29
1 changed files with 0 additions and 61 deletions
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61
sys/fs/constfs/constfs.c
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@ -33,46 +33,34 @@
#include "debug.h" #include "debug.h"
/* File system operations */ /* File system operations */
static int constfs_mount(vfs_mount_t *mountp);
static int constfs_umount(vfs_mount_t *mountp);
static int constfs_unlink(vfs_mount_t *mountp, const char *name);
static int constfs_stat(vfs_mount_t *mountp, const char *restrict name, struct stat *restrict buf); static int constfs_stat(vfs_mount_t *mountp, const char *restrict name, struct stat *restrict buf);
static int constfs_statvfs(vfs_mount_t *mountp, const char *restrict path, struct statvfs *restrict buf); static int constfs_statvfs(vfs_mount_t *mountp, const char *restrict path, struct statvfs *restrict buf);
/* File operations */ /* File operations */
static int constfs_close(vfs_file_t *filp);
static int constfs_fstat(vfs_file_t *filp, struct stat *buf); static int constfs_fstat(vfs_file_t *filp, struct stat *buf);
static off_t constfs_lseek(vfs_file_t *filp, off_t off, int whence); static off_t constfs_lseek(vfs_file_t *filp, off_t off, int whence);
static int constfs_open(vfs_file_t *filp, const char *name, int flags, mode_t mode, const char *abs_path); static int constfs_open(vfs_file_t *filp, const char *name, int flags, mode_t mode, const char *abs_path);
static ssize_t constfs_read(vfs_file_t *filp, void *dest, size_t nbytes); static ssize_t constfs_read(vfs_file_t *filp, void *dest, size_t nbytes);
static ssize_t constfs_write(vfs_file_t *filp, const void *src, size_t nbytes);
/* Directory operations */ /* Directory operations */
static int constfs_opendir(vfs_DIR *dirp, const char *dirname, const char *abs_path); static int constfs_opendir(vfs_DIR *dirp, const char *dirname, const char *abs_path);
static int constfs_readdir(vfs_DIR *dirp, vfs_dirent_t *entry); static int constfs_readdir(vfs_DIR *dirp, vfs_dirent_t *entry);
static int constfs_closedir(vfs_DIR *dirp);
static const vfs_file_system_ops_t constfs_fs_ops = { static const vfs_file_system_ops_t constfs_fs_ops = {
.mount = constfs_mount,
.umount = constfs_umount,
.unlink = constfs_unlink,
.statvfs = constfs_statvfs, .statvfs = constfs_statvfs,
.stat = constfs_stat, .stat = constfs_stat,
}; };
static const vfs_file_ops_t constfs_file_ops = { static const vfs_file_ops_t constfs_file_ops = {
.close = constfs_close,
.fstat = constfs_fstat, .fstat = constfs_fstat,
.lseek = constfs_lseek, .lseek = constfs_lseek,
.open = constfs_open, .open = constfs_open,
.read = constfs_read, .read = constfs_read,
.write = constfs_write,
}; };
static const vfs_dir_ops_t constfs_dir_ops = { static const vfs_dir_ops_t constfs_dir_ops = {
.opendir = constfs_opendir, .opendir = constfs_opendir,
.readdir = constfs_readdir, .readdir = constfs_readdir,
.closedir = constfs_closedir,
}; };
const vfs_file_system_t constfs_file_system = { const vfs_file_system_t constfs_file_system = {
@ -91,28 +79,6 @@ const vfs_file_system_t constfs_file_system = {
*/ */
static void _constfs_write_stat(const constfs_file_t *fp, struct stat *restrict buf); static void _constfs_write_stat(const constfs_file_t *fp, struct stat *restrict buf);
static int constfs_mount(vfs_mount_t *mountp)
{
/* perform any extra initialization here */
(void) mountp; /* prevent warning: unused parameter */
return 0;
}
static int constfs_umount(vfs_mount_t *mountp)
{
/* free resources and perform any clean up here */
(void) mountp; /* prevent warning: unused parameter */
return 0;
}
static int constfs_unlink(vfs_mount_t *mountp, const char *name)
{
/* Removing files is prohibited */
(void) mountp; /* prevent warning: unused parameter */
(void) name; /* prevent warning: unused parameter */
return -EROFS;
}
static int constfs_stat(vfs_mount_t *mountp, const char *restrict name, struct stat *restrict buf) static int constfs_stat(vfs_mount_t *mountp, const char *restrict name, struct stat *restrict buf)
{ {
(void) name; (void) name;
@ -162,13 +128,6 @@ static int constfs_statvfs(vfs_mount_t *mountp, const char *restrict path, struc
return 0; return 0;
} }
static int constfs_close(vfs_file_t *filp)
{
/* perform any necessary clean ups */
(void) filp; /* prevent warning: unused parameter */
return 0;
}
static int constfs_fstat(vfs_file_t *filp, struct stat *buf) static int constfs_fstat(vfs_file_t *filp, struct stat *buf)
{ {
constfs_file_t *fp = filp->private_data.ptr; constfs_file_t *fp = filp->private_data.ptr;
@ -244,18 +203,6 @@ static ssize_t constfs_read(vfs_file_t *filp, void *dest, size_t nbytes)
return nbytes; return nbytes;
} }
static ssize_t constfs_write(vfs_file_t *filp, const void *src, size_t nbytes)
{
DEBUG("constfs_write: %p, %p, %lu\n", (void *)filp, src, (unsigned long)nbytes);
/* Read only file system */
DEBUG("constfs_write: read only FS\n");
/* prevent warning: unused parameter */
(void) filp;
(void) src;
(void) nbytes;
return -EBADF;
}
static int constfs_opendir(vfs_DIR *dirp, const char *dirname, const char *abs_path) static int constfs_opendir(vfs_DIR *dirp, const char *dirname, const char *abs_path)
{ {
(void) abs_path; (void) abs_path;
@ -298,14 +245,6 @@ static int constfs_readdir(vfs_DIR *dirp, vfs_dirent_t *entry)
return 1; return 1;
} }
static int constfs_closedir(vfs_DIR *dirp)
{
/* Just an example, it's not necessary to define closedir if there is
* nothing to clean up */
(void) dirp;
return 0;
}
static void _constfs_write_stat(const constfs_file_t *fp, struct stat *restrict buf) static void _constfs_write_stat(const constfs_file_t *fp, struct stat *restrict buf)
{ {
/* buffer is cleared by vfs already */ /* buffer is cleared by vfs already */