crtxcr/exile.h
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QSSB_FS_ALLOW_WRITE does not imply ALLOW_READ anymore

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Landlock can handle write access without it implying read access,
in contrast to the existing bind mounts solution. Hence, remove
ALLOW_READ from ALLOW_WRITE bitmask.
This commit is contained in:
Albert S. 2021-05-15 20:41:19 +02:00
父節點 fcebed557c
當前提交 ad9c391e3f
共有 1 個檔案被更改，包括 4 行新增 和 4 行删除
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qssb.h
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@ -83,7 +83,7 @@
#define QSSB_SYS(x) (__NR_##x)
#define QSSB_FS_ALLOW_READ 1<<0
#define QSSB_FS_ALLOW_WRITE (1<<1) | QSSB_FS_ALLOW_READ
#define QSSB_FS_ALLOW_WRITE (1<<1)
#define QSSB_FS_ALLOW_EXEC 1<<2
#define QSSB_FS_ALLOW_DEV 1<<3
#define QSSB_FS_ALLOW_SETUID 1<<4
@ -334,12 +334,12 @@ static int get_policy_mount_flags(struct qssb_path_policy *policy)
result |= MS_NOSUID;
}
if( ((policy->policy) & (QSSB_FS_ALLOW_WRITE)) == QSSB_FS_ALLOW_READ)
if( (policy->policy & QSSB_FS_ALLOW_WRITE) == 0)
{
result |= MS_RDONLY;
}
if( !(policy->policy & QSSB_MOUNT_NOT_REC))
if( (policy->policy & QSSB_MOUNT_NOT_REC) == 0)
{
result |= MS_REC;
}
@ -380,7 +380,7 @@ static int mount_to_chroot(const char *chroot_target_path, struct qssb_path_poli
mount_flags |= MS_BIND;
if(path_policy->policy & QSSB_FS_ALLOW_READ)
if(path_policy->policy & QSSB_FS_ALLOW_READ || path_policy->policy & QSSB_FS_ALLOW_WRITE)
{
ret = mount(path_policy->path, path_inside_chroot, NULL, mount_flags, NULL);
if(ret < 0 )