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path: root/security/selinux/selinuxfs.c
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Diffstat (limited to 'security/selinux/selinuxfs.c')
-rw-r--r--security/selinux/selinuxfs.c54
1 files changed, 23 insertions, 31 deletions
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 8eb140dd2e4b..fdc382389720 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -105,7 +105,7 @@ static ssize_t sel_write_enforce(struct file * file, const char __user * buf,
ssize_t length;
int new_value;
- if (count < 0 || count >= PAGE_SIZE)
+ if (count >= PAGE_SIZE)
return -ENOMEM;
if (*ppos != 0) {
/* No partial writes. */
@@ -155,7 +155,7 @@ static ssize_t sel_write_disable(struct file * file, const char __user * buf,
int new_value;
extern int selinux_disable(void);
- if (count < 0 || count >= PAGE_SIZE)
+ if (count >= PAGE_SIZE)
return -ENOMEM;
if (*ppos != 0) {
/* No partial writes. */
@@ -242,7 +242,7 @@ static ssize_t sel_write_load(struct file * file, const char __user * buf,
goto out;
}
- if ((count < 0) || (count > 64 * 1024 * 1024)
+ if ((count > 64 * 1024 * 1024)
|| (data = vmalloc(count)) == NULL) {
length = -ENOMEM;
goto out;
@@ -284,7 +284,7 @@ static ssize_t sel_write_context(struct file * file, const char __user * buf,
if (length)
return length;
- if (count < 0 || count >= PAGE_SIZE)
+ if (count >= PAGE_SIZE)
return -ENOMEM;
if (*ppos != 0) {
/* No partial writes. */
@@ -332,7 +332,7 @@ static ssize_t sel_write_checkreqprot(struct file * file, const char __user * bu
if (length)
return length;
- if (count < 0 || count >= PAGE_SIZE)
+ if (count >= PAGE_SIZE)
return -ENOMEM;
if (*ppos != 0) {
/* No partial writes. */
@@ -424,15 +424,13 @@ static ssize_t sel_write_access(struct file * file, char *buf, size_t size)
return length;
length = -ENOMEM;
- scon = kmalloc(size+1, GFP_KERNEL);
+ scon = kzalloc(size+1, GFP_KERNEL);
if (!scon)
return length;
- memset(scon, 0, size+1);
- tcon = kmalloc(size+1, GFP_KERNEL);
+ tcon = kzalloc(size+1, GFP_KERNEL);
if (!tcon)
goto out;
- memset(tcon, 0, size+1);
length = -EINVAL;
if (sscanf(buf, "%s %s %hu %x", scon, tcon, &tclass, &req) != 4)
@@ -475,15 +473,13 @@ static ssize_t sel_write_create(struct file * file, char *buf, size_t size)
return length;
length = -ENOMEM;
- scon = kmalloc(size+1, GFP_KERNEL);
+ scon = kzalloc(size+1, GFP_KERNEL);
if (!scon)
return length;
- memset(scon, 0, size+1);
- tcon = kmalloc(size+1, GFP_KERNEL);
+ tcon = kzalloc(size+1, GFP_KERNEL);
if (!tcon)
goto out;
- memset(tcon, 0, size+1);
length = -EINVAL;
if (sscanf(buf, "%s %s %hu", scon, tcon, &tclass) != 3)
@@ -536,15 +532,13 @@ static ssize_t sel_write_relabel(struct file * file, char *buf, size_t size)
return length;
length = -ENOMEM;
- scon = kmalloc(size+1, GFP_KERNEL);
+ scon = kzalloc(size+1, GFP_KERNEL);
if (!scon)
return length;
- memset(scon, 0, size+1);
- tcon = kmalloc(size+1, GFP_KERNEL);
+ tcon = kzalloc(size+1, GFP_KERNEL);
if (!tcon)
goto out;
- memset(tcon, 0, size+1);
length = -EINVAL;
if (sscanf(buf, "%s %s %hu", scon, tcon, &tclass) != 3)
@@ -595,15 +589,13 @@ static ssize_t sel_write_user(struct file * file, char *buf, size_t size)
return length;
length = -ENOMEM;
- con = kmalloc(size+1, GFP_KERNEL);
+ con = kzalloc(size+1, GFP_KERNEL);
if (!con)
return length;
- memset(con, 0, size+1);
- user = kmalloc(size+1, GFP_KERNEL);
+ user = kzalloc(size+1, GFP_KERNEL);
if (!user)
goto out;
- memset(user, 0, size+1);
length = -EINVAL;
if (sscanf(buf, "%s %s", con, user) != 2)
@@ -658,15 +650,13 @@ static ssize_t sel_write_member(struct file * file, char *buf, size_t size)
return length;
length = -ENOMEM;
- scon = kmalloc(size+1, GFP_KERNEL);
+ scon = kzalloc(size+1, GFP_KERNEL);
if (!scon)
return length;
- memset(scon, 0, size+1);
- tcon = kmalloc(size+1, GFP_KERNEL);
+ tcon = kzalloc(size+1, GFP_KERNEL);
if (!tcon)
goto out;
- memset(tcon, 0, size+1);
length = -EINVAL;
if (sscanf(buf, "%s %s %hu", scon, tcon, &tclass) != 3)
@@ -739,7 +729,7 @@ static ssize_t sel_read_bool(struct file *filep, char __user *buf,
if (!filep->f_op)
goto out;
- if (count < 0 || count > PAGE_SIZE) {
+ if (count > PAGE_SIZE) {
ret = -EINVAL;
goto out;
}
@@ -800,7 +790,7 @@ static ssize_t sel_write_bool(struct file *filep, const char __user *buf,
if (!filep->f_op)
goto out;
- if (count < 0 || count >= PAGE_SIZE) {
+ if (count >= PAGE_SIZE) {
length = -ENOMEM;
goto out;
}
@@ -858,7 +848,7 @@ static ssize_t sel_commit_bools_write(struct file *filep,
if (!filep->f_op)
goto out;
- if (count < 0 || count >= PAGE_SIZE) {
+ if (count >= PAGE_SIZE) {
length = -ENOMEM;
goto out;
}
@@ -879,7 +869,7 @@ static ssize_t sel_commit_bools_write(struct file *filep,
if (sscanf(page, "%d", &new_value) != 1)
goto out;
- if (new_value) {
+ if (new_value && bool_pending_values) {
security_set_bools(bool_num, bool_pending_values);
}
@@ -924,7 +914,7 @@ static void sel_remove_bools(struct dentry *de)
file_list_lock();
list_for_each(p, &sb->s_files) {
- struct file * filp = list_entry(p, struct file, f_list);
+ struct file * filp = list_entry(p, struct file, f_u.fu_list);
struct dentry * dentry = filp->f_dentry;
if (dentry->d_parent != de) {
@@ -952,6 +942,7 @@ static int sel_make_bools(void)
/* remove any existing files */
kfree(bool_pending_values);
+ bool_pending_values = NULL;
sel_remove_bools(dir);
@@ -1002,6 +993,7 @@ out:
}
return ret;
err:
+ kfree(values);
d_genocide(dir);
ret = -ENOMEM;
goto out;
@@ -1030,7 +1022,7 @@ static ssize_t sel_write_avc_cache_threshold(struct file * file,
ssize_t ret;
int new_value;
- if (count < 0 || count >= PAGE_SIZE) {
+ if (count >= PAGE_SIZE) {
ret = -ENOMEM;
goto out;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 14:34:25 +0100