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| author | Alejandro Colomar <alx.manpages@gmail.com> | 2021-05-15 20:20:23 +0200 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2021-05-17 20:04:30 +1200 |
| commit | 56cfe81cfb4ee0133c7e16c63cf720b6be0a16a0 (patch) | |
| tree | c85b91b9b1cd3f60bbaf970636112922b751b321 /man2 | |
| parent | cc6f5bf20f632fd53540bbc81d75f9401c159e26 (diff) | |
| download | man-pages-56cfe81cfb4ee0133c7e16c63cf720b6be0a16a0.tar.gz | |
s390_guarded_storage.2: Use syscall(SYS_...); for system calls without a wrapper
Also document why each header is needed.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man2')
| -rw-r--r-- | man2/s390_guarded_storage.2 | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/man2/s390_guarded_storage.2 b/man2/s390_guarded_storage.2 index 1d4cb57775..747c45c3a9 100644 --- a/man2/s390_guarded_storage.2 +++ b/man2/s390_guarded_storage.2 @@ -27,13 +27,20 @@ s390_guarded_storage \- operations with z/Architecture guarded storage facility .SH SYNOPSIS .nf -.B #include <asm/guarded_storage.h> +.BR "#include <asm/guarded_storage.h> " "/* Definition of " GS_* " constants */" +.BR "#include <sys/syscall.h> " \ +"/* Definition of " SYS_* " constants */" +.B #include <unistd.h> .PP -.BI "int s390_guarded_storage(int " command ", struct gs_cb *" gs_cb ");" +.BI "int syscall(SYS_s390_guarded_storage, int " command , +.BI " struct gs_cb *" gs_cb ); .fi .PP .IR Note : -There is no glibc wrapper for this system call; see NOTES. +glibc provides no wrapper for +.BR s390_guarded_storage (2), +necessitating the use of +.BR syscall (2). .SH DESCRIPTION The .BR s390_guarded_storage () @@ -144,9 +151,6 @@ This Linux-specific system call is available only on the s390 architecture. .PP The guarded storage facility is available beginning with System z14. .SH NOTES -Glibc does not provide a wrapper for this system call; call it using -.BR syscall (2). -.PP The description of the guarded storage facility along with related instructions and Guarded Storage Control Block and Guarded Storage Event Parameter List structure layouts |