[PATCH v2 1/2] Various pages: Normalize SYNOPSIS notes about nonexistent glibc wrappers

[Alejandro Colomar <alx.manpages@gmail.com>]

From: Ganimedes Colomar <gacoan.linux@gmail.com>

To easily distinguish documentation about glibc wrappers from
documentation about kernel syscalls, let's have a normalized
'Note' in the SYNOPSIS, and a further explanation in the page body
(NOTES in most of them), as already happened in many (but not all)
of the manual pages for syscalls without a wrapper.  Furthermore,
let's normalize the messages, following membarrier.2 (because it's
already quite extended), so that it's easy to use grep to find
those pages.

To find these pages, we used:
$ grep -rn wrapper man? | sort -V
and
$ grep -rni support.*glibc | sort -V

delete_module.2, init_module.2:  glibc 2.23 is no longer
  maintained, so we changed the notes about wrappers, to say that
  there are no glibc wrappers for these system calls; see NOTES.

We didn't fix some obsolete pages such as create_module.2.

Signed-off-by: Ganimedes Colomar <gacoan.linux@gmail.com>
Cowritten-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
---
 man2/add_key.2              | 3 ++-
 man2/arch_prctl.2           | 3 +++
 man2/clone.2                | 2 +-
 man2/delete_module.2        | 2 +-
 man2/init_module.2          | 6 +-----
 man2/keyctl.2               | 3 ++-
 man2/pidfd_getfd.2          | 3 +++
 man2/pidfd_open.2           | 3 +++
 man2/pidfd_send_signal.2    | 2 ++
 man2/request_key.2          | 3 ++-
 man2/s390_guarded_storage.2 | 3 +++
 man2/s390_pci_mmio_write.2  | 3 +++
 man2/s390_runtime_instr.2   | 3 +++
 man2/s390_sthyi.2           | 3 +++
 man2/seccomp.2              | 3 +++
 man2/syslog.2               | 1 -
 16 files changed, 35 insertions(+), 11 deletions(-)

diff --git a/man2/add_key.2 b/man2/add_key.2
index 1476b7d85..7c20de777 100644
--- a/man2/add_key.2
+++ b/man2/add_key.2
@@ -22,7 +22,8 @@ add_key \- add a key to the kernel's key management facility
 .BI "                     key_serial_t " keyring ");"
 .fi
 .PP
-No glibc wrapper is provided for this system call; see NOTES.
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 .BR add_key ()
 creates or updates a key of the given
diff --git a/man2/arch_prctl.2 b/man2/arch_prctl.2
index 97d5a2fe5..e8a6da391 100644
--- a/man2/arch_prctl.2
+++ b/man2/arch_prctl.2
@@ -33,6 +33,9 @@ arch_prctl \- set architecture-specific thread state
 .BI "int arch_prctl(int " code ", unsigned long " addr );
 .BI "int arch_prctl(int " code ", unsigned long *" addr );
 .fi
+.PP
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 .BR arch_prctl ()
 sets architecture-specific process or thread state.
diff --git a/man2/clone.2 b/man2/clone.2
index 0114668ea..0d6565b5d 100644
--- a/man2/clone.2
+++ b/man2/clone.2
@@ -60,7 +60,7 @@ clone, __clone2, clone3 \- create a child process
 .fi
 .PP
 .IR Note :
-There is not yet a glibc wrapper for
+There is no glibc wrapper for
 .BR clone3 ();
 see NOTES.
 .SH DESCRIPTION
diff --git a/man2/delete_module.2 b/man2/delete_module.2
index daa15faa2..e63545d51 100644
--- a/man2/delete_module.2
+++ b/man2/delete_module.2
@@ -31,7 +31,7 @@ delete_module \- unload a kernel module
 .fi
 .PP
 .IR Note :
-No declaration of this system call is provided in glibc headers; see NOTES.
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 The
 .BR delete_module ()
diff --git a/man2/init_module.2 b/man2/init_module.2
index c2675db97..00cf4e948 100644
--- a/man2/init_module.2
+++ b/man2/init_module.2
@@ -37,11 +37,7 @@ init_module, finit_module \- load a kernel module
 .fi
 .PP
 .IR Note :
-glibc provides no header file declaration of
-.BR init_module ()
-and no wrapper function for
-.BR finit_module ();
-see NOTES.
+There are no glibc wrappers for these system calls; see NOTES.
 .SH DESCRIPTION
 .BR init_module ()
 loads an ELF image into kernel space,
diff --git a/man2/keyctl.2 b/man2/keyctl.2
index 6bf07972d..f37cae8df 100644
--- a/man2/keyctl.2
+++ b/man2/keyctl.2
@@ -45,7 +45,8 @@ keyctl \- manipulate the kernel's key management facility
 .BI "             __kernel_ulong_t " arg5 );
 .fi
 .PP
-No glibc wrapper is provided for this system call; see NOTES.
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 .BR keyctl ()
 allows user-space programs to perform key manipulation.
diff --git a/man2/pidfd_getfd.2 b/man2/pidfd_getfd.2
index 1a69c8238..9312b6f92 100644
--- a/man2/pidfd_getfd.2
+++ b/man2/pidfd_getfd.2
@@ -29,6 +29,9 @@ pidfd_getfd \- obtain a duplicate of another process's file descriptor
 .nf
 .BI "int pidfd_getfd(int " pidfd ", int " targetfd ", unsigned int " flags );
 .fi
+.PP
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 The
 .BR pidfd_getfd ()
diff --git a/man2/pidfd_open.2 b/man2/pidfd_open.2
index 5b99460e1..1b0c5e0d4 100644
--- a/man2/pidfd_open.2
+++ b/man2/pidfd_open.2
@@ -31,6 +31,9 @@ pidfd_open \- obtain a file descriptor that refers to a process
 .PP
 .BI "int pidfd_open(pid_t " pid ", unsigned int " flags );
 .fi
+.PP
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 The
 .BR pidfd_open ()
diff --git a/man2/pidfd_send_signal.2 b/man2/pidfd_send_signal.2
index 6670cf357..ffbfd1796 100644
--- a/man2/pidfd_send_signal.2
+++ b/man2/pidfd_send_signal.2
@@ -32,6 +32,8 @@ pidfd_send_signal \- send a signal to a process specified by a file descriptor
 .BI "int pidfd_send_signal(int " pidfd ", int " sig ", siginfo_t *" info ,
 .BI "                      unsigned int " flags );
 .fi
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 The
 .BR pidfd_send_signal ()
diff --git a/man2/request_key.2 b/man2/request_key.2
index 86f76e43d..6b041d0c4 100644
--- a/man2/request_key.2
+++ b/man2/request_key.2
@@ -22,7 +22,8 @@ request_key \- request a key from the kernel's key management facility
 .BI "                         key_serial_t " dest_keyring ");"
 .fi
 .PP
-No glibc wrapper is provided for this system call; see NOTES.
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 .BR request_key ()
 attempts to find a key of the given
diff --git a/man2/s390_guarded_storage.2 b/man2/s390_guarded_storage.2
index b3aef858f..c3ab3bc85 100644
--- a/man2/s390_guarded_storage.2
+++ b/man2/s390_guarded_storage.2
@@ -31,6 +31,9 @@ s390_guarded_storage \- operations with z/Architecture guarded storage facility
 .PP
 .BI "int s390_guarded_storage(int " command ", struct gs_cb *" gs_cb ");"
 .fi
+.PP
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 The
 .BR s390_guarded_storage ()
diff --git a/man2/s390_pci_mmio_write.2 b/man2/s390_pci_mmio_write.2
index 802142987..2ccd630ab 100644
--- a/man2/s390_pci_mmio_write.2
+++ b/man2/s390_pci_mmio_write.2
@@ -35,6 +35,9 @@ MMIO memory page
 .BI "int s390_pci_mmio_read(unsigned long " mmio_addr ","
 .BI "                        void *" user_buffer ", size_t " length ");"
 .fi
+.PP
+.IR Note :
+There are no glibc wrappers for these system calls; see NOTES.
 .SH DESCRIPTION
 The
 .BR s390_pci_mmio_write ()
diff --git a/man2/s390_runtime_instr.2 b/man2/s390_runtime_instr.2
index 558e9c99d..0f4a704de 100644
--- a/man2/s390_runtime_instr.2
+++ b/man2/s390_runtime_instr.2
@@ -31,6 +31,9 @@ s390_runtime_instr \- enable/disable s390 CPU run-time instrumentation
 .PP
 .BI "int s390_runtime_instr(int " command ", int " signum ");"
 .fi
+.PP
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 The
 .BR s390_runtime_instr ()
diff --git a/man2/s390_sthyi.2 b/man2/s390_sthyi.2
index 2ff06051a..70871286b 100644
--- a/man2/s390_sthyi.2
+++ b/man2/s390_sthyi.2
@@ -32,6 +32,9 @@ s390_sthyi \- emulate STHYI instruction
 .BI "int s390_sthyi(unsigned long " function_code ", void *" resp_buffer ","
 .BI "               uint64_t *" return_code ", unsigned long " flags ");"
 .fi
+.PP
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 The
 .BR s390_sthyi ()
diff --git a/man2/seccomp.2 b/man2/seccomp.2
index 6ac890a2f..4600c51d6 100644
--- a/man2/seccomp.2
+++ b/man2/seccomp.2
@@ -41,6 +41,9 @@ seccomp \- operate on Secure Computing state of the process
 .BI "int seccomp(unsigned int " operation ", unsigned int " flags \
 ", void *" args );
 .fi
+.PP
+.IR Note :
+There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 The
 .BR seccomp ()
diff --git a/man2/syslog.2 b/man2/syslog.2
index c6d6dcc94..133ba2121 100644
--- a/man2/syslog.2
+++ b/man2/syslog.2
@@ -36,7 +36,6 @@ set console_loglevel
 .SH SYNOPSIS
 .nf
 .BI "int syslog(int " type ", char *" bufp ", int " len );
-.B  "                /* No wrapper provided in glibc */"
 .PP
 /* The glibc interface */
 .B "#include <sys/klog.h>"
-- 
2.29.2