Enrico Fraccaroli (Galfurian)
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/// @file proc_feedback.c
|
|
/// @brief Contains callbacks for procfs system files.
|
|
/// @copyright (c) 2014-2022 This file is distributed under the MIT License.
|
|
/// See LICENSE.md for details.
|
|
|
|
#include "fs/procfs.h"
|
|
#include "io/debug.h"
|
|
#include "process/process.h"
|
|
#include "string.h"
|
|
#include "sys/errno.h"
|
|
|
|
static ssize_t procfb_read(vfs_file_t *file, char *buf, off_t offset, size_t nbyte)
|
|
{
|
|
if (!file) {
|
|
pr_err("Received a NULL file.\n");
|
|
return -ENOENT;
|
|
}
|
|
if (!strcmp(file->name, "/proc/feedback")) {
|
|
pr_alert("Return scheduling feedback information.\n");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/// Filesystem general operations.
|
|
static vfs_sys_operations_t procfb_sys_operations = {
|
|
.mkdir_f = NULL,
|
|
.rmdir_f = NULL,
|
|
.stat_f = NULL
|
|
};
|
|
|
|
/// Filesystem file operations.
|
|
static vfs_file_operations_t procfb_fs_operations = {
|
|
.open_f = NULL,
|
|
.unlink_f = NULL,
|
|
.close_f = NULL,
|
|
.read_f = procfb_read,
|
|
.write_f = NULL,
|
|
.lseek_f = NULL,
|
|
.stat_f = NULL,
|
|
.ioctl_f = NULL,
|
|
.getdents_f = NULL
|
|
};
|
|
|
|
int procfb_module_init()
|
|
{
|
|
// Create the file.
|
|
proc_dir_entry_t *file = proc_create_entry("feedback", NULL);
|
|
if (file == NULL) {
|
|
pr_err("Cannot create `/proc/feedback`.\n");
|
|
return 1;
|
|
}
|
|
pr_debug("Created `/proc/feedback` (%p)\n", file);
|
|
// Set the specific operations.
|
|
file->sys_operations = &procfb_sys_operations;
|
|
file->fs_operations = &procfb_fs_operations;
|
|
return 0;
|
|
}
|