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c452833387
fddb5d430a("open: introduce openat2(2) syscall")9a2cef09c8("arch: wire up pidfd_getfd syscall") We also need to grab a copy of uapi/linux/openat2.h since it is now needed by fcntl.h, add it to tools/perf/check_headers.h. $ diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl --- tools/perf/arch/x86/entry/syscalls/syscall_64.tbl 2019-12-20 16:43:57.662429958 -0300 +++ arch/x86/entry/syscalls/syscall_64.tbl 2020-02-10 16:36:22.070012468 -0300 @@ -357,6 +357,8 @@ 433 common fspick __x64_sys_fspick 434 common pidfd_open __x64_sys_pidfd_open 435 common clone3 __x64_sys_clone3/ptregs +437 common openat2 __x64_sys_openat2 +438 common pidfd_getfd __x64_sys_pidfd_getfd # # x32-specific system call numbers start at 512 to avoid cache impact $ Update tools/'s copy of that file: $ cp arch/x86/entry/syscalls/syscall_64.tbl tools/perf/arch/x86/entry/syscalls/syscall_64.tbl See the result: $ diff -u /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c.before /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c --- /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c.before 2020-02-10 16:42:59.010636041 -0300 +++ /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c 2020-02-10 16:43:24.149958337 -0300 @@ -346,5 +346,7 @@ [433] = "fspick", [434] = "pidfd_open", [435] = "clone3", + [437] = "openat2", + [438] = "pidfd_getfd", }; -#define SYSCALLTBL_x86_64_MAX_ID 435 +#define SYSCALLTBL_x86_64_MAX_ID 438 $ Now one can use: perf trace -e openat2,pidfd_getfd To get just those syscalls or use in things like: perf trace -e open* To get all the open variant (open, openat, openat2, etc) or: perf trace pidfd* To get the pidfd syscalls. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Aleksa Sarai <cyphar@cyphar.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Sargun Dhillon <sargun@sargun.me> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _UAPI_LINUX_OPENAT2_H
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#define _UAPI_LINUX_OPENAT2_H
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#include <linux/types.h>
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/*
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* Arguments for how openat2(2) should open the target path. If only @flags and
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* @mode are non-zero, then openat2(2) operates very similarly to openat(2).
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*
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* However, unlike openat(2), unknown or invalid bits in @flags result in
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* -EINVAL rather than being silently ignored. @mode must be zero unless one of
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* {O_CREAT, O_TMPFILE} are set.
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*
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* @flags: O_* flags.
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* @mode: O_CREAT/O_TMPFILE file mode.
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* @resolve: RESOLVE_* flags.
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*/
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struct open_how {
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__u64 flags;
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__u64 mode;
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__u64 resolve;
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};
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/* how->resolve flags for openat2(2). */
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#define RESOLVE_NO_XDEV 0x01 /* Block mount-point crossings
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(includes bind-mounts). */
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#define RESOLVE_NO_MAGICLINKS 0x02 /* Block traversal through procfs-style
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"magic-links". */
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#define RESOLVE_NO_SYMLINKS 0x04 /* Block traversal through all symlinks
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(implies OEXT_NO_MAGICLINKS) */
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#define RESOLVE_BENEATH 0x08 /* Block "lexical" trickery like
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"..", symlinks, and absolute
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paths which escape the dirfd. */
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#define RESOLVE_IN_ROOT 0x10 /* Make all jumps to "/" and ".."
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be scoped inside the dirfd
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(similar to chroot(2)). */
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#endif /* _UAPI_LINUX_OPENAT2_H */
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