size_t in_size,
const void *in_buffer))
{
- loff_t size;
+ size_t size;
int i, len;
int rc = -ENOENT;
char *path;
fw_priv->size = 0;
/* load firmware files from the mount namespace of init */
- rc = kernel_read_file_from_path_initns(path, &buffer,
- &size, msize,
+ rc = kernel_read_file_from_path_initns(path, &buffer, msize,
READING_FIRMWARE);
- if (rc) {
+ if (rc < 0) {
if (rc != -ENOENT)
dev_warn(device, "loading %s failed with error %d\n",
path, rc);
path);
continue;
}
+ size = rc;
+ rc = 0;
+
dev_dbg(device, "Loading firmware from %s\n", path);
if (decompress) {
dev_dbg(device, "f/w decompressing %s\n",
#include <linux/security.h>
#include <linux/vmalloc.h>
-int kernel_read_file(struct file *file, void **buf, loff_t *size,
+int kernel_read_file(struct file *file, void **buf,
loff_t max_size, enum kernel_read_file_id id)
{
loff_t i_size, pos;
ret = -EINVAL;
goto out;
}
- if (i_size > SIZE_MAX || (max_size > 0 && i_size > max_size)) {
+ if (i_size > INT_MAX || (max_size > 0 && i_size > max_size)) {
ret = -EFBIG;
goto out;
}
}
ret = security_kernel_post_read_file(file, *buf, i_size, id);
- if (!ret)
- *size = pos;
out_free:
if (ret < 0) {
out:
allow_write_access(file);
- return ret;
+ return ret == 0 ? pos : ret;
}
EXPORT_SYMBOL_GPL(kernel_read_file);
-int kernel_read_file_from_path(const char *path, void **buf, loff_t *size,
+int kernel_read_file_from_path(const char *path, void **buf,
loff_t max_size, enum kernel_read_file_id id)
{
struct file *file;
if (IS_ERR(file))
return PTR_ERR(file);
- ret = kernel_read_file(file, buf, size, max_size, id);
+ ret = kernel_read_file(file, buf, max_size, id);
fput(file);
return ret;
}
EXPORT_SYMBOL_GPL(kernel_read_file_from_path);
int kernel_read_file_from_path_initns(const char *path, void **buf,
- loff_t *size, loff_t max_size,
+ loff_t max_size,
enum kernel_read_file_id id)
{
struct file *file;
if (IS_ERR(file))
return PTR_ERR(file);
- ret = kernel_read_file(file, buf, size, max_size, id);
+ ret = kernel_read_file(file, buf, max_size, id);
fput(file);
return ret;
}
EXPORT_SYMBOL_GPL(kernel_read_file_from_path_initns);
-int kernel_read_file_from_fd(int fd, void **buf, loff_t *size, loff_t max_size,
+int kernel_read_file_from_fd(int fd, void **buf, loff_t max_size,
enum kernel_read_file_id id)
{
struct fd f = fdget(fd);
if (!f.file)
goto out;
- ret = kernel_read_file(f.file, buf, size, max_size, id);
+ ret = kernel_read_file(f.file, buf, max_size, id);
out:
fdput(f);
return ret;
}
int kernel_read_file(struct file *file,
- void **buf, loff_t *size, loff_t max_size,
+ void **buf, loff_t max_size,
enum kernel_read_file_id id);
int kernel_read_file_from_path(const char *path,
- void **buf, loff_t *size, loff_t max_size,
+ void **buf, loff_t max_size,
enum kernel_read_file_id id);
int kernel_read_file_from_path_initns(const char *path,
- void **buf, loff_t *size, loff_t max_size,
+ void **buf, loff_t max_size,
enum kernel_read_file_id id);
int kernel_read_file_from_fd(int fd,
- void **buf, loff_t *size, loff_t max_size,
+ void **buf, loff_t max_size,
enum kernel_read_file_id id);
#endif /* _LINUX_KERNEL_READ_FILE_H */
{
int ret;
void *ldata;
- loff_t size;
ret = kernel_read_file_from_fd(kernel_fd, &image->kernel_buf,
- &size, INT_MAX, READING_KEXEC_IMAGE);
- if (ret)
+ INT_MAX, READING_KEXEC_IMAGE);
+ if (ret < 0)
return ret;
- image->kernel_buf_len = size;
+ image->kernel_buf_len = ret;
/* Call arch image probe handlers */
ret = arch_kexec_kernel_image_probe(image, image->kernel_buf,
/* It is possible that there no initramfs is being loaded */
if (!(flags & KEXEC_FILE_NO_INITRAMFS)) {
ret = kernel_read_file_from_fd(initrd_fd, &image->initrd_buf,
- &size, INT_MAX,
+ INT_MAX,
READING_KEXEC_INITRAMFS);
- if (ret)
+ if (ret < 0)
goto out;
- image->initrd_buf_len = size;
+ image->initrd_buf_len = ret;
+ ret = 0;
}
if (cmdline_len) {
SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags)
{
struct load_info info = { };
- loff_t size;
void *hdr = NULL;
int err;
|MODULE_INIT_IGNORE_VERMAGIC))
return -EINVAL;
- err = kernel_read_file_from_fd(fd, &hdr, &size, INT_MAX,
+ err = kernel_read_file_from_fd(fd, &hdr, INT_MAX,
READING_MODULE);
- if (err)
+ if (err < 0)
return err;
info.hdr = hdr;
- info.len = size;
+ info.len = err;
return load_module(&info, uargs, flags);
}
int __init integrity_load_x509(const unsigned int id, const char *path)
{
void *data = NULL;
- loff_t size;
+ size_t size;
int rc;
key_perm_t perm;
- rc = kernel_read_file_from_path(path, &data, &size, 0,
+ rc = kernel_read_file_from_path(path, &data, 0,
READING_X509_CERTIFICATE);
if (rc < 0) {
pr_err("Unable to open file: %s (%d)", path, rc);
return rc;
}
+ size = rc;
perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW | KEY_USR_READ;
{
void *data = NULL;
char *datap;
- loff_t size;
+ size_t size;
int rc, pathlen = strlen(path);
char *p;
datap = path;
strsep(&datap, "\n");
- rc = kernel_read_file_from_path(path, &data, &size, 0, READING_POLICY);
+ rc = kernel_read_file_from_path(path, &data, 0, READING_POLICY);
if (rc < 0) {
pr_err("Unable to open file: %s (%d)", path, rc);
return rc;
}
+ size = rc;
+ rc = 0;
datap = data;
while (size > 0 && (p = strsep(&datap, "\n"))) {