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authorKees Cook <keescook@chromium.org>2020-10-02 20:38:17 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-10-05 14:34:18 +0300
commitf7a4f689bca6072492626938aad6dd2f32c5bf97 (patch)
tree2618864649e84370218c4d47138964932fec067e /security/integrity
parent5287b07f6d7cc366528954e2c3cae22e47cb76a4 (diff)
downloadlinux-f7a4f689bca6072492626938aad6dd2f32c5bf97.tar.xz
fs/kernel_read_file: Remove redundant size argument
In preparation for refactoring kernel_read_file*(), remove the redundant "size" argument which is not needed: it can be included in the return code, with callers adjusted. (VFS reads already cannot be larger than INT_MAX.) Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Mimi Zohar <zohar@linux.ibm.com> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Reviewed-by: James Morris <jamorris@linux.microsoft.com> Acked-by: Scott Branden <scott.branden@broadcom.com> Link: https://lore.kernel.org/r/20201002173828.2099543-6-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'security/integrity')
-rw-r--r--security/integrity/digsig.c5
-rw-r--r--security/integrity/ima/ima_fs.c6
2 files changed, 7 insertions, 4 deletions
diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c
index f8869be45d8f..97661ffabc4e 100644
--- a/security/integrity/digsig.c
+++ b/security/integrity/digsig.c
@@ -171,16 +171,17 @@ int __init integrity_add_key(const unsigned int id, const void *data,
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;
diff --git a/security/integrity/ima/ima_fs.c b/security/integrity/ima/ima_fs.c
index e13ffece3726..602f52717757 100644
--- a/security/integrity/ima/ima_fs.c
+++ b/security/integrity/ima/ima_fs.c
@@ -275,7 +275,7 @@ static ssize_t ima_read_policy(char *path)
{
void *data = NULL;
char *datap;
- loff_t size;
+ size_t size;
int rc, pathlen = strlen(path);
char *p;
@@ -284,11 +284,13 @@ static ssize_t ima_read_policy(char *path)
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"))) {