diff options
Diffstat (limited to 'include/uapi/linux/pidfd.h')
| -rw-r--r-- | include/uapi/linux/pidfd.h | 37 |
1 files changed, 25 insertions, 12 deletions
diff --git a/include/uapi/linux/pidfd.h b/include/uapi/linux/pidfd.h index 2970ef44655a..0919246a1611 100644 --- a/include/uapi/linux/pidfd.h +++ b/include/uapi/linux/pidfd.h @@ -12,7 +12,8 @@ #define PIDFD_THREAD O_EXCL #ifdef __KERNEL__ #include <linux/sched.h> -#define PIDFD_CLONE CLONE_PIDFD +#define PIDFD_STALE CLONE_PIDFD +#define PIDFD_AUTOKILL O_TRUNC #endif /* Flags for pidfd_send_signal(). */ @@ -25,23 +26,28 @@ #define PIDFD_INFO_CREDS (1UL << 1) /* Always returned, even if not requested */ #define PIDFD_INFO_CGROUPID (1UL << 2) /* Always returned if available, even if not requested */ #define PIDFD_INFO_EXIT (1UL << 3) /* Only returned if requested. */ +#define PIDFD_INFO_COREDUMP (1UL << 4) /* Only returned if requested. */ +#define PIDFD_INFO_SUPPORTED_MASK (1UL << 5) /* Want/got supported mask flags */ +#define PIDFD_INFO_COREDUMP_SIGNAL (1UL << 6) /* Always returned if PIDFD_INFO_COREDUMP is requested. */ +#define PIDFD_INFO_COREDUMP_CODE (1UL << 7) /* Always returned if PIDFD_INFO_COREDUMP is requested. */ #define PIDFD_INFO_SIZE_VER0 64 /* sizeof first published struct */ +#define PIDFD_INFO_SIZE_VER1 72 /* sizeof second published struct */ +#define PIDFD_INFO_SIZE_VER2 80 /* sizeof third published struct */ +#define PIDFD_INFO_SIZE_VER3 88 /* sizeof fourth published struct */ /* - * The concept of process and threads in userland and the kernel is a confusing - * one - within the kernel every thread is a 'task' with its own individual PID, - * however from userland's point of view threads are grouped by a single PID, - * which is that of the 'thread group leader', typically the first thread - * spawned. + * Values for @coredump_mask in pidfd_info. + * Only valid if PIDFD_INFO_COREDUMP is set in @mask. * - * To cut the Gideon knot, for internal kernel usage, we refer to - * PIDFD_SELF_THREAD to refer to the current thread (or task from a kernel - * perspective), and PIDFD_SELF_THREAD_GROUP to refer to the current thread - * group leader... + * Note, the @PIDFD_COREDUMP_ROOT flag indicates that the generated + * coredump should be treated as sensitive and access should only be + * granted to privileged users. */ -#define PIDFD_SELF_THREAD -10000 /* Current thread. */ -#define PIDFD_SELF_THREAD_GROUP -20000 /* Current thread group leader. */ +#define PIDFD_COREDUMPED (1U << 0) /* Did crash and... */ +#define PIDFD_COREDUMP_SKIP (1U << 1) /* coredumping generation was skipped. */ +#define PIDFD_COREDUMP_USER (1U << 2) /* coredump was done as the user. */ +#define PIDFD_COREDUMP_ROOT (1U << 3) /* coredump was done as root. */ /* * ...and for userland we make life simpler - PIDFD_SELF refers to the current @@ -92,6 +98,13 @@ struct pidfd_info { __u32 fsuid; __u32 fsgid; __s32 exit_code; + struct /* coredump info */ { + __u32 coredump_mask; + __u32 coredump_signal; + __u32 coredump_code; + __u32 coredump_pad; /* align supported_mask to 8 bytes */ + }; + __u64 supported_mask; /* Mask flags that this kernel supports */ }; #define PIDFS_IOCTL_MAGIC 0xFF |