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* bpf: Add BPF token support to BPF_PROG_LOAD commandAndrii Nakryiko2024-01-251-0/+3
| | | | | | | | | | | | | Add basic support of BPF token to BPF_PROG_LOAD. BPF_F_TOKEN_FD flag should be set in prog_flags field when providing prog_token_fd. Wire through a set of allowed BPF program types and attach types, derived from BPF FS at BPF token creation time. Then make sure we perform bpf_token_capable() checks everywhere where it's relevant. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* bpf: Add BPF token support to BPF_MAP_CREATE commandAndrii Nakryiko2024-01-251-0/+3
| | | | | | | | | | | | | | | | | Allow providing token_fd for BPF_MAP_CREATE command to allow controlled BPF map creation from unprivileged process through delegated BPF token. New BPF_F_TOKEN_FD flag is added to specify together with BPF token FD for BPF_MAP_CREATE command. Wire through a set of allowed BPF map types to BPF token, derived from BPF FS at BPF token creation time. This, in combination with allowed_cmds allows to create a narrowly-focused BPF token (controlled by privileged agent) with a restrictive set of BPF maps that application can attempt to create. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* Revert BPF token-related functionalityAndrii Nakryiko2023-12-191-6/+0
| | | | | | | | | | | | This patch includes the following revert (one conflicting BPF FS patch and three token patch sets, represented by merge commits): - revert 0f5d5454c723 "Merge branch 'bpf-fs-mount-options-parsing-follow-ups'"; - revert 750e785796bb "bpf: Support uid and gid when mounting bpffs"; - revert 733763285acf "Merge branch 'bpf-token-support-in-libbpf-s-bpf-object'"; - revert c35919dcce28 "Merge branch 'bpf-token-and-bpf-fs-based-delegation'". Link: https://lore.kernel.org/bpf/CAHk-=wg7JuFYwGy=GOMbRCtOL+jwSQsdUaBsRWkDVYbxipbM5A@mail.gmail.com Signed-off-by: Andrii Nakryiko <[email protected]>
* bpf: rename MAX_BPF_LINK_TYPE into __MAX_BPF_LINK_TYPE for consistencyAndrii Nakryiko2023-12-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | To stay consistent with the naming pattern used for similar cases in BPF UAPI (__MAX_BPF_ATTACH_TYPE, etc), rename MAX_BPF_LINK_TYPE into __MAX_BPF_LINK_TYPE. Also similar to MAX_BPF_ATTACH_TYPE and MAX_BPF_REG, add: #define MAX_BPF_LINK_TYPE __MAX_BPF_LINK_TYPE Not all __MAX_xxx enums have such #define, so I'm not sure if we should add it or not, but I figured I'll start with a completely backwards compatible way, and we can drop that, if necessary. Also adjust a selftest that used MAX_BPF_LINK_TYPE enum. Suggested-by: Alexei Starovoitov <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* bpf: add BPF token support to BPF_PROG_LOAD commandAndrii Nakryiko2023-12-061-0/+3
| | | | | | | | | | | Add basic support of BPF token to BPF_PROG_LOAD. Wire through a set of allowed BPF program types and attach types, derived from BPF FS at BPF token creation time. Then make sure we perform bpf_token_capable() checks everywhere where it's relevant. Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* bpf: add BPF token support to BPF_MAP_CREATE commandAndrii Nakryiko2023-12-061-0/+3
| | | | | | | | | | | | | | | Allow providing token_fd for BPF_MAP_CREATE command to allow controlled BPF map creation from unprivileged process through delegated BPF token. Wire through a set of allowed BPF map types to BPF token, derived from BPF FS at BPF token creation time. This, in combination with allowed_cmds allows to create a narrowly-focused BPF token (controlled by privileged agent) with a restrictive set of BPF maps that application can attempt to create. Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* bpf: Mark BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE deprecatedYonghong Song2023-09-081-1/+5
| | | | | | | | | | | | Now 'BPF_MAP_TYPE_CGRP_STORAGE + local percpu ptr' can cover all BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE functionality and more. So mark BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE deprecated. Also make changes in selftests/bpf/test_bpftool_synctypes.py and selftest libbpf_str to fix otherwise test errors. Signed-off-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* selftests/bpf: Fix test test_libbpf_str/bpf_map_type_strYonghong Song2022-10-261-0/+8
| | | | | | | | | | | | | | | | | | Previous bpf patch made a change to uapi bpf.h like @@ -922,7 +922,14 @@ enum bpf_map_type { BPF_MAP_TYPE_SOCKHASH, - BPF_MAP_TYPE_CGROUP_STORAGE, + BPF_MAP_TYPE_CGROUP_STORAGE_DEPRECATED, + BPF_MAP_TYPE_CGROUP_STORAGE = BPF_MAP_TYPE_CGROUP_STORAGE_DEPRECATED, BPF_MAP_TYPE_REUSEPORT_SOCKARRAY, where BPF_MAP_TYPE_CGROUP_STORAGE_DEPRECATED and BPF_MAP_TYPE_CGROUP_STORAGE have the same enum value. This will cause selftest test_libbpf_str/bpf_map_type_str failing. This patch fixed the issue by avoid the check for BPF_MAP_TYPE_CGROUP_STORAGE_DEPRECATED in the test. Signed-off-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
* selftests/bpf: Add test for libbpf_bpf_link_type_strDaniel Müller2022-06-021-0/+48
| | | | | | | | | | | | This change adds a test for libbpf_bpf_link_type_str. The test retrieves all variants of the bpf_link_type enumeration using BTF and makes sure that the function under test works as expected for them. Signed-off-by: Daniel Müller <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Quentin Monnet <[email protected]> Acked-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* selftests/bpf: Add test for libbpf_bpf_attach_type_strDaniel Müller2022-06-021-0/+48
| | | | | | | | | | | | This change adds a test for libbpf_bpf_attach_type_str. The test retrieves all variants of the bpf_attach_type enumeration using BTF and makes sure that the function under test works as expected for them. Signed-off-by: Daniel Müller <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Quentin Monnet <[email protected]> Acked-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* selftests/bpf: Add test for libbpf_bpf_map_type_strDaniel Müller2022-06-021-1/+55
| | | | | | | | | | | | This change adds a test for libbpf_bpf_map_type_str. The test retrieves all variants of the bpf_map_type enumeration using BTF and makes sure that the function under test works as expected for them. Signed-off-by: Daniel Müller <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Quentin Monnet <[email protected]> Acked-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
* selftests/bpf: Add test for libbpf_bpf_prog_type_strDaniel Müller2022-06-021-0/+57
This change adds a test for libbpf_bpf_prog_type_str. The test retrieves all variants of the bpf_prog_type enumeration using BTF and makes sure that the function under test works as expected for them. Signed-off-by: Daniel Müller <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Quentin Monnet <[email protected]> Acked-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
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