diff options
Diffstat (limited to 'security/selinux')
| -rw-r--r-- | security/selinux/hooks.c | 44 |
1 files changed, 23 insertions, 21 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index b6c7930a3ab2..942f2b8c4ebb 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -6486,30 +6486,32 @@ abort_change: return error; } +/** + * selinux_getselfattr - Get SELinux current task attributes + * @attr: the requested attribute + * @ctx: buffer to receive the result + * @size: buffer size (input), buffer size used (output) + * @flags: unused + * + * Fill the passed user space @ctx with the details of the requested + * attribute. + * + * Returns the number of attributes on success, an error code otherwise. + * There will only ever be one attribute. + */ static int selinux_getselfattr(unsigned int attr, struct lsm_ctx __user *ctx, size_t *size, u32 flags) { - char *value; - size_t total_len; - int len; - int rc = 0; - - len = selinux_lsm_getattr(attr, current, &value); - if (len < 0) - return len; - - total_len = ALIGN(struct_size(ctx, ctx, len), 8); - - if (total_len > *size) - rc = -E2BIG; - else if (ctx) - rc = lsm_fill_user_ctx(ctx, value, len, LSM_ID_SELINUX, 0); - - kfree(value); - *size = total_len; - if (rc < 0) - return rc; - return 1; + int rc; + char *val; + int val_len; + + val_len = selinux_lsm_getattr(attr, current, &val); + if (val_len < 0) + return val_len; + rc = lsm_fill_user_ctx(ctx, size, val, val_len, LSM_ID_SELINUX, 0); + kfree(val); + return (!rc ? 1 : rc); } static int selinux_setselfattr(unsigned int attr, struct lsm_ctx *ctx, |