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ptrace.2: Document PTRACE_SET_SYSCALL 

Signed-off-by: Joseph C. Sible <josephcsible@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Joseph C. Sible 2020-04-13 10:29:03 +02:00 committed by Michael Kerrisk
parent 84eb2279b1
commit c2254484e3
1 changed files with 16 additions and 0 deletions
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@ -733,6 +733,22 @@ argument is treated as for
.RI ( addr
is ignored.)
.TP
.BR PTRACE_SET_SYSCALL " (since Linux 2.6.16)"
.\" commit 3f471126ee53feb5e9b210ea2f525ed3bb9b7a7f
When in syscall-enter-stop, change the number of the syscall about to
be executed to the number specified in the
.I data
argument. The
.I addr
argument is ignored. This request is currently
.\" As of 4.19-rc2
supported only on arm (and arm64, though only for backwards compatibility),
.\" commit 27aa55c5e5123fa8b8ad0156559d34d7edff58ca
but most other architectures have other means of accomplishing this
(usually by changing the register that the userland code passed the
syscall number in).
.\" see change_syscall in tools/testing/selftests/seccomp/seccomp_bpf.c
.TP
.BR PTRACE_SYSEMU ", " PTRACE_SYSEMU_SINGLESTEP " (since Linux 2.6.14)"
For
.BR PTRACE_SYSEMU ,