Messages in this thread Patch in this message | | | From | Francis Laniel <> | Subject | [RFC PATCH v3 1/2] capability: Add cap_string. | Date | Thu, 20 Jan 2022 19:01:15 +0100 |
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This string contains on each line the number of the capability associated to its name. For example, first line is: __stringify(CAP_CHOWN) "\tCAP_CHOWN\n" which the preprocessor will replace by: "0\tCAP_CHOWN\n"
Signed-off-by: Francis Laniel <flaniel@linux.microsoft.com> --- include/uapi/linux/capability.h | 1 + kernel/capability.c | 45 +++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+)
diff --git a/include/uapi/linux/capability.h b/include/uapi/linux/capability.h index 463d1ba2232a..115f4fef00da 100644 --- a/include/uapi/linux/capability.h +++ b/include/uapi/linux/capability.h @@ -428,5 +428,6 @@ struct vfs_ns_cap_data { #define CAP_TO_INDEX(x) ((x) >> 5) /* 1 << 5 == bits in __u32 */ #define CAP_TO_MASK(x) (1 << ((x) & 31)) /* mask for indexed __u32 */ +extern const char *cap_string; #endif /* _UAPI_LINUX_CAPABILITY_H */ diff --git a/kernel/capability.c b/kernel/capability.c index 46a361dde042..72b0aece4f81 100644 --- a/kernel/capability.c +++ b/kernel/capability.c @@ -15,6 +15,7 @@ #include <linux/mm.h> #include <linux/export.h> #include <linux/security.h> +#include <linux/stringify.h> #include <linux/syscalls.h> #include <linux/pid_namespace.h> #include <linux/user_namespace.h> @@ -27,6 +28,50 @@ const kernel_cap_t __cap_empty_set = CAP_EMPTY_SET; EXPORT_SYMBOL(__cap_empty_set); +const char *cap_string = + __stringify(CAP_CHOWN) "\tCAP_CHOWN\n" + __stringify(CAP_DAC_OVERRIDE) "\tCAP_DAC_OVERRIDE\n" + __stringify(CAP_DAC_READ_SEARCH) "\tCAP_DAC_READ_SEARCH\n" + __stringify(CAP_FOWNER) "\tCAP_FOWNER\n" + __stringify(CAP_FSETID) "\tCAP_FSETID\n" + __stringify(CAP_KILL) "\tCAP_KILL\n" + __stringify(CAP_SETGID) "\tCAP_SETGID\n" + __stringify(CAP_SETUID) "\tCAP_SETUID\n" + __stringify(CAP_SETPCAP) "\tCAP_SETPCAP\n" + __stringify(CAP_LINUX_IMMUTABLE) "\tCAP_LINUX_IMMUTABLE\n" + __stringify(CAP_NET_BIND_SERVICE) "\tCAP_NET_BIND_SERVICE\n" + __stringify(CAP_NET_BROADCAST) "\tCAP_NET_BROADCAST\n" + __stringify(CAP_NET_ADMIN) "\tCAP_NET_ADMIN\n" + __stringify(CAP_NET_RAW) "\tCAP_NET_RAW\n" + __stringify(CAP_IPC_LOCK) "\tCAP_IPC_LOCK\n" + __stringify(CAP_IPC_OWNER) "\tCAP_IPC_OWNER\n" + __stringify(CAP_SYS_MODULE) "\tCAP_SYS_MODULE\n" + __stringify(CAP_SYS_RAWIO) "\tCAP_SYS_RAWIO\n" + __stringify(CAP_SYS_CHROOT) "\tCAP_SYS_CHROOT\n" + __stringify(CAP_SYS_PTRACE) "\tCAP_SYS_PTRACE\n" + __stringify(CAP_SYS_PACCT) "\tCAP_SYS_PACCT\n" + __stringify(CAP_SYS_ADMIN) "\tCAP_SYS_ADMIN\n" + __stringify(CAP_SYS_BOOT) "\tCAP_SYS_BOOT\n" + __stringify(CAP_SYS_NICE) "\tCAP_SYS_NICE\n" + __stringify(CAP_SYS_RESOURCE) "\tCAP_SYS_RESOURCE\n" + __stringify(CAP_SYS_TIME) "\tCAP_SYS_TIME\n" + __stringify(CAP_SYS_TTY_CONFIG) "\tCAP_SYS_TTY_CONFIG\n" + __stringify(CAP_MKNOD) "\tCAP_MKNOD\n" + __stringify(CAP_LEASE) "\tCAP_LEASE\n" + __stringify(CAP_AUDIT_WRITE) "\tCAP_AUDIT_WRITE\n" + __stringify(CAP_AUDIT_CONTROL) "\tCAP_AUDIT_CONTROL\n" + __stringify(CAP_SETFCAP) "\tCAP_SETFCAP\n" + __stringify(CAP_MAC_OVERRIDE) "\tCAP_MAC_OVERRIDE\n" + __stringify(CAP_MAC_ADMIN) "\tCAP_MAC_ADMIN\n" + __stringify(CAP_SYSLOG) "\tCAP_SYSLOG\n" + __stringify(CAP_WAKE_ALARM) "\tCAP_WAKE_ALARM\n" + __stringify(CAP_BLOCK_SUSPEND) "\tCAP_BLOCK_SUSPEND\n" + __stringify(CAP_AUDIT_READ) "\tCAP_AUDIT_READ\n" + __stringify(CAP_PERFMON) "\tCAP_PERFMON\n" + __stringify(CAP_BPF) "\tCAP_BPF\n" + __stringify(CAP_CHECKPOINT_RESTORE) "\tCAP_CHECKPOINT_RESTORE\n" +; + int file_caps_enabled = 1; static int __init file_caps_disable(char *str) -- 2.30.2
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