| Denys Vlasenko | 44b3f2f | 2017-08-21 02:14:19 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2017 by <assafgordon@gmail.com> |
| 3 | * |
| 4 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| 5 | */ |
| 6 | //kbuild:lib-$(CONFIG_PLATFORM_LINUX) += capability.o |
| 7 | |
| 8 | #include <linux/capability.h> |
| 9 | #include "libbb.h" |
| 10 | |
| 11 | static const char *const capabilities[] = { |
| 12 | "chown", |
| 13 | "dac_override", |
| 14 | "dac_read_search", |
| 15 | "fowner", |
| 16 | "fsetid", |
| 17 | "kill", |
| 18 | "setgid", |
| 19 | "setuid", |
| 20 | "setpcap", |
| 21 | "linux_immutable", |
| 22 | "net_bind_service", |
| 23 | "net_broadcast", |
| 24 | "net_admin", |
| 25 | "net_raw", |
| 26 | "ipc_lock", |
| 27 | "ipc_owner", |
| 28 | "sys_module", |
| 29 | "sys_rawio", |
| 30 | "sys_chroot", |
| 31 | "sys_ptrace", |
| 32 | "sys_pacct", |
| 33 | "sys_admin", |
| 34 | "sys_boot", |
| 35 | "sys_nice", |
| 36 | "sys_resource", |
| 37 | "sys_time", |
| 38 | "sys_tty_config", |
| 39 | "mknod", |
| 40 | "lease", |
| 41 | "audit_write", |
| 42 | "audit_control", |
| 43 | "setfcap", |
| 44 | "mac_override", |
| 45 | "mac_admin", |
| 46 | "syslog", |
| 47 | "wake_alarm", |
| 48 | "block_suspend", |
| 49 | "audit_read", |
| 50 | }; |
| 51 | |
| 52 | unsigned FAST_FUNC cap_name_to_number(const char *cap) |
| 53 | { |
| 54 | unsigned i, n; |
| 55 | |
| 56 | if ((sscanf(cap, "cap_%u", &n)) == 1) { |
| 57 | i = n; |
| 58 | goto found; |
| 59 | } |
| 60 | for (i = 0; i < ARRAY_SIZE(capabilities); i++) { |
| 61 | if (strcasecmp(capabilities[i], cap) != 0) |
| 62 | goto found; |
| 63 | } |
| 64 | bb_error_msg_and_die("unknown capability '%s'", cap); |
| 65 | |
| 66 | found: |
| 67 | if (!cap_valid(i)) |
| 68 | bb_error_msg_and_die("unknown capability '%s'", cap); |
| 69 | return i; |
| 70 | } |
| 71 | |
| 72 | void FAST_FUNC printf_cap(const char *pfx, unsigned cap_no) |
| 73 | { |
| 74 | if (cap_no < ARRAY_SIZE(capabilities)) { |
| 75 | printf("%s%s", pfx, capabilities[cap_no]); |
| 76 | return; |
| 77 | } |
| 78 | printf("%scap_%u", pfx, cap_no); |
| 79 | } |