Various pages: Standardize wording around setting of 'errno' on error

In the RETURN VALUE sections, a number of different wordings
are used in to describe the fact that 'errno' is set on error.
There's no reason for the difference in wordings, since the same
thing is being described in each case. Switch to a standard
wording that is the same as FreeBSD and similar to the wording
used in POSIX.1.

In this change, fix some instances stating that 'errno' is set
"appropriately" to instead say "to indicate the error".

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/access.2

@@ -211,7 +211,7 @@ is
 and the file does not exist, or some other error occurred),
 \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .BR access ()
 and

man2/acct.2

@@ -69,7 +69,7 @@ An argument of NULL causes accounting to be turned off.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/alloc_hugepages.2

@@ -113,7 +113,7 @@ returns the allocated virtual address, and
 returns zero.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B ENOSYS

man2/bind.2

@@ -154,7 +154,7 @@ See EXAMPLES below.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/bpf.2

@@ -985,7 +985,7 @@ Zero.
 .PP
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B E2BIG

man2/capget.2

@@ -167,7 +167,7 @@ to all members of the process group whose ID is \-\fIpid\fP.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 The calls fail with the error
 .BR EINVAL ,

man2/chdir.2

@@ -68,7 +68,7 @@ open file descriptor.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 Depending on the filesystem, other errors can be returned.
 The more

man2/chmod.2

@@ -231,7 +231,7 @@ for an explanation of the need for
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 Depending on the filesystem,
 errors other than those listed below can be returned.

man2/chown.2

@@ -218,7 +218,7 @@ for an explanation of the need for
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 Depending on the filesystem,
 errors other than those listed below can be returned.

man2/chroot.2

@@ -112,7 +112,7 @@ descriptors may allow access to files outside the chroot tree.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 Depending on the filesystem, other errors can be returned.
 The more general errors are listed below:

man2/clone.2

@@ -1200,7 +1200,7 @@ in the caller's thread of execution.
 On failure, \-1 is returned
 in the caller's context, no child process will be created, and
 .I errno
-will be set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EAGAIN

man2/close.2

@@ -67,7 +67,7 @@ the file is deleted.
 returns zero on success.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/connect.2

@@ -137,7 +137,7 @@ is supported on Linux since kernel 2.2.)
 If the connection or binding succeeds, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 The following are general socket errors only.
 There may be other domain-specific error codes.

man2/create_module.2

@@ -31,7 +31,7 @@ This system call requires privilege.
 On success, returns the kernel address at which the module will reside.
 On error, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EEXIST

man2/delete_module.2

@@ -125,7 +125,7 @@ Using this flag taints the kernel (TAINT_FORCED_RMMOD).
 On success, zero is returned.
 On error, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBUSY

man2/dup.2

@@ -152,7 +152,7 @@ On success, these system calls
 return the new file descriptor.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/epoll_ctl.2

@@ -316,7 +316,7 @@ When an error occurs,
 .BR epoll_ctl ()
 returns \-1 and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/epoll_wait.2

@@ -181,7 +181,7 @@ When an error occurs,
 .BR epoll_wait ()
 returns \-1 and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/execve.2

@@ -441,7 +441,7 @@ On success,
 .BR execve ()
 does not return, on error \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B E2BIG

man2/execveat.2

@@ -111,7 +111,7 @@ On success,
 does not return.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 The same errors that occur for
 .BR execve (2)

man2/fcntl.2

@@ -1661,7 +1661,7 @@ Zero.
 .PP
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .BR EACCES " or " EAGAIN

man2/flock.2

@@ -115,7 +115,7 @@ mode in which the file was opened.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/fork.2

@@ -218,7 +218,7 @@ and 0 is returned in the child.
 On failure, \-1 is returned in the parent,
 no child process is created, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EAGAIN

man2/fsync.2

@@ -119,7 +119,7 @@ require all metadata to be synchronized with the disk.
 On success, these system calls return zero.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/get_kernel_syms.2

@@ -53,7 +53,7 @@ On success, returns the number of symbols copied to
 .IR table .
 On error, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 There is only one possible error return:
 .TP

man2/getcpu.2

@@ -55,7 +55,7 @@ is no longer current by the time the call returns.
 On success, 0 is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/getdents.2

@@ -186,7 +186,7 @@ On success, the number of bytes read is returned.
 On end of directory, 0 is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/getdomainname.2

@@ -83,7 +83,7 @@ returns the first \fIlen\fP bytes (glibc) or gives an error (libc).
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .BR setdomainname ()
 can fail with the following errors:

man2/getgroups.2

@@ -109,14 +109,14 @@ On success,
 returns the number of supplementary group IDs.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 On success,
 .BR setgroups ()
 returns 0.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/gethostname.2

@@ -94,7 +94,7 @@ includes a terminating null byte.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/getitimer.2

@@ -134,7 +134,7 @@ if both of its subfields are zero, the timer is single-shot.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/getpeername.2

@@ -71,7 +71,7 @@ will return a value greater than was supplied to the call.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/getrandom.2

@@ -138,7 +138,7 @@ source or the system call was interrupted by a signal.
 .PP
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EAGAIN

man2/getresuid.2

@@ -51,7 +51,7 @@ performs the analogous task for the process's group IDs.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/getrlimit.2

@@ -508,7 +508,7 @@ must match the real group ID of the caller.
 On success, these system calls return 0.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/getrusage.2

@@ -188,7 +188,7 @@ exceeded its time slice.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/getsid.2

@@ -61,7 +61,7 @@ returns the session ID of the calling process.
 On success, a session ID is returned.
 On error, \fI(pid_t)\ \-1\fP will be returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EPERM

man2/getsockname.2

@@ -68,7 +68,7 @@ will return a value greater than was supplied to the call.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/getsockopt.2

@@ -131,7 +131,7 @@ and the appropriate protocol man pages.
 On success, zero is returned for the standard options.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 Netfilter allows the programmer
 to define custom socket options with associated handlers; for such

man2/getxattr.2

@@ -106,7 +106,7 @@ On success, these calls return a nonnegative value which is
 the size (in bytes) of the extended attribute value.
 On failure, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B E2BIG

man2/init_module.2

@@ -150,7 +150,7 @@ as expected for malformed modules.
 On success, these system calls return 0.
 On error, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .BR EBADMSG " (since Linux 3.7)"

man2/inotify_add_watch.2

@@ -82,7 +82,7 @@ On success,
 returns a watch descriptor (a nonnegative integer).
 On error, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/ioctl.2

@@ -93,7 +93,7 @@ requests use the return value as an output parameter
 and return a nonnegative value on success.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/ioperm.2

@@ -79,7 +79,7 @@ return an error.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL

man2/iopl.2

@@ -59,7 +59,7 @@ return an error.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL

man2/kcmp.2

@@ -242,7 +242,7 @@ but ordering information is unavailable.
 .PP
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 .BR kcmp ()
 was designed to return values suitable for sorting.

man2/kill.2

@@ -100,7 +100,7 @@ processes belong to the same session.
 On success (at least one signal was sent), zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL

man2/link.2

@@ -182,7 +182,7 @@ for an explanation of the need for
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/listen.2

@@ -82,7 +82,7 @@ ignored so that a later reattempt at connection succeeds.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EADDRINUSE

man2/listxattr.2

@@ -128,7 +128,7 @@ On success, a nonnegative number is returned indicating the size of the
 extended attribute name list.
 On failure, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B E2BIG

man2/lookup_dcookie.2

@@ -48,7 +48,7 @@ On success,
 returns the length of the path string copied into the buffer.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/madvise.2

@@ -456,7 +456,7 @@ On success,
 returns zero.
 On error, it returns \-1 and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/membarrier.2

@@ -249,7 +249,7 @@ operations return zero.
 On error, \-1 is returned,
 and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 For a given command, with
 .I flags

man2/mincore.2

@@ -103,7 +103,7 @@ On success,
 returns zero.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .B EAGAIN
 kernel is temporarily out of resources.

man2/mmap2.2

@@ -57,7 +57,7 @@ On success,
 returns a pointer to the mapped area.
 On error, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/mount.2

@@ -627,7 +627,7 @@ to modify the behavior of the call.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 The error values given below result from filesystem type independent
 errors.

man2/mprotect.2

@@ -144,7 +144,7 @@ and
 return zero.
 On error, these system calls return \-1, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/mremap.2

@@ -164,7 +164,7 @@ returns a pointer to the new virtual memory area.
 On error, the value
 .B MAP_FAILED
 (that is, \fI(void\ *)\ \-1\fP) is returned,
-and \fIerrno\fP is set appropriately.
+and \fIerrno\fP is set to indicate the error.
 .SH ERRORS
 .TP
 .B EAGAIN

man2/msync.2

@@ -74,7 +74,7 @@ Asks to invalidate other mappings of the same file
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBUSY

man2/nfsservctl.2

@@ -57,7 +57,7 @@ union nfsctl_res {
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH VERSIONS
 This system call was removed from the Linux kernel in version 3.1.
 Library support was removed from glibc in version 2.28.

man2/nice.2

@@ -71,7 +71,7 @@ for details.
 On success, the new nice value is returned (but see NOTES below).
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 A successful call can legitimately return \-1.
 To detect an error, set

man2/openat2.2

@@ -394,7 +394,7 @@ an error is returned.
 On success, a new file descriptor is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 The set of errors returned by
 .BR openat2 ()

man2/pciconfig_read.2

@@ -52,13 +52,13 @@ the IO base for PIO cycles, or the ISA holes if any.
 On success, zero is returned.
 On error, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .TP
 .BR pciconfig_write ()
 On success, zero is returned.
 On error, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .TP
 .BR pciconfig_iobase ()
 Returns information on locations of various I/O

man2/personality.2

@@ -254,7 +254,7 @@ On success, the previous
 is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL

man2/pivot_root.2

@@ -96,7 +96,7 @@ The current root directory must be a mount point.
 .SH RETURN VALUE
 On success, zero is returned.
 On error, \-1 is returned, and
-\fIerrno\fP is set appropriately.
+\fIerrno\fP is set to indicate the error.
 .SH ERRORS
 .BR pivot_root ()
 may fail with any of the same errors as

man2/pkey_alloc.2

@@ -76,7 +76,7 @@ On success,
 returns zero.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL

man2/prctl.2

@@ -1932,7 +1932,7 @@ All other
 values return 0 on success.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/process_vm_readv.2

@@ -227,7 +227,7 @@ a partial read/write occurred.
 .PP
 On error, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/ptrace.2

@@ -2332,7 +2332,7 @@ other requests return zero.
 .PP
 On error, all requests return \-1, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 Since the value returned by a successful
 .B PTRACE_PEEK*
 request may be \-1, the caller must clear

man2/query_module.2

@@ -130,7 +130,7 @@ structure.
 On success, zero is returned.
 On error, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/read.2

@@ -93,7 +93,7 @@ See also NOTES.
 .PP
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 In this case, it is left unspecified whether
 the file position (if any) changes.
 .SH ERRORS

man2/readdir.2

@@ -95,7 +95,7 @@ On success, 1 is returned.
 On end of directory, 0 is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/readv.2

@@ -282,7 +282,7 @@ than requested (see
 and
 .BR write (2)).
 .PP
-On error, \-1 is returned, and \fIerrno\fP is set appropriately.
+On error, \-1 is returned, and \fIerrno\fP is set to indicate the error.
 .SH ERRORS
 The errors are as given for
 .BR read (2)

man2/reboot.2

@@ -221,7 +221,7 @@ For the other
 values, zero is returned on success.
 In all cases, \-1 is returned on failure, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/remap_file_pages.2

@@ -141,7 +141,7 @@ On success,
 returns 0.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL

man2/removexattr.2

@@ -79,7 +79,7 @@ namespaces associated with an individual inode.
 On success, zero is returned.
 On failure, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B ENODATA

man2/rename.2

@@ -294,7 +294,7 @@ and ubifs (since Linux 4.9).
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/rmdir.2

@@ -43,7 +43,7 @@ deletes a directory, which must be empty.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/s390_guarded_storage.2

@@ -112,7 +112,7 @@ is 0.
 .PP
 On error, \-1 is returned, and
 .IR errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/s390_sthyi.2

@@ -99,7 +99,7 @@ The return values 1 and 2 are reserved.
 .PP
 On error, \-1 is returned, and
 .IR errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/sched_get_priority_max.2

@@ -105,7 +105,7 @@ return the maximum/minimum priority value for the named scheduling
 policy.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL

man2/sched_rr_get_interval.2

@@ -78,7 +78,7 @@ On success,
 returns 0.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/sched_setaffinity.2

@@ -114,7 +114,7 @@ which notes that the underlying
 differs in its return value).
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT

man2/sched_setparam.2

@@ -91,7 +91,7 @@ and
 return 0.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL

man2/sched_setscheduler.2

@@ -138,7 +138,7 @@ On success,
 returns the policy for the thread (a nonnegative integer).
 On error, both calls return \-1, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL

man2/sched_yield.2

@@ -46,7 +46,7 @@ On success,
 returns 0.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 In the Linux implementation,
 .BR sched_yield ()

man2/send.2

@@ -317,7 +317,7 @@ field is ignored.
 On success, these calls return the number of bytes sent.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 These are some standard errors generated by the socket layer.
 Additional errors

man2/sendfile.2

@@ -112,7 +112,7 @@ See also NOTES.
 .PP
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EAGAIN

man2/set_thread_area.2

@@ -133,7 +133,7 @@ segments, although clearing a segment is still acceptable.
 On x86, these system calls
 return 0 on success, and \-1 on failure, with
 .I errno
-set appropriately.
+set to indicate the error.
 .PP
 On MIPS and m68k,
 .BR set_thread_area ()

man2/seteuid.2

@@ -67,7 +67,7 @@ with "group" instead of "user".
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 .IR Note :
 there are cases where

man2/setgid.2

@@ -58,7 +58,7 @@ effective group ID in a secure manner.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL

man2/setpgid.2

@@ -194,7 +194,7 @@ and
 return zero.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 The POSIX.1
 .BR getpgrp ()
@@ -206,7 +206,7 @@ and the BSD-specific
 return a process group on success.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/setresuid.2

@@ -65,7 +65,7 @@ with the same restrictions for unprivileged processes.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 .IR Note :
 there are cases where

man2/setreuid.2

@@ -95,7 +95,7 @@ and all of the above holds with "group" instead of "user".
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 .IR Note :
 there are cases where

man2/setuid.2

@@ -75,7 +75,7 @@ You can accomplish this with
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .PP
 .IR Note :
 there are cases where

man2/setxattr.2

@@ -110,7 +110,7 @@ which fails if the named attribute does not already exist.
 On success, zero is returned.
 On failure, \-1 is returned and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EDQUOT

man2/shmctl.2

@@ -385,7 +385,7 @@ Other operations return 0 on success.
 .PP
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/shutdown.2

@@ -72,7 +72,7 @@ further receptions and transmissions will be disallowed.
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF

man2/socket.2

@@ -418,7 +418,7 @@ are used to set and get options.
 On success, a file descriptor for the new socket is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES

man2/stat.2

@@ -368,7 +368,7 @@ for an explanation of the need for
 On success, zero is returned.
 On error, \-1 is returned, and
 .I errno
-is set appropriately.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES