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Diffstat (limited to 'man3/perror.3')
| -rw-r--r-- | man3/perror.3 | 142 |
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diff --git a/man3/perror.3 b/man3/perror.3 deleted file mode 100644 index 2bd83c2..0000000 --- a/man3/perror.3 +++ /dev/null @@ -1,142 +0,0 @@ -'\" t -.\" Copyright (c) 1994 Michael Haardt (michael@moria.de), 1994-06-04 -.\" Copyright (c) 1995 Michael Haardt -.\" (michael@cantor.informatik.rwth-aachen.de), 1995-03-16 -.\" Copyright (c) 1996 Andries Brouwer (aeb@cwi.nl), 1996-01-13 -.\" -.\" SPDX-License-Identifier: GPL-2.0-or-later -.\" -.\" 1996-01-13 aeb: merged in some text contributed by Melvin Smith -.\" (msmith@falcon.mercer.peachnet.edu) and various other changes. -.\" Modified 1996-05-16 by Martin Schulze (joey@infodrom.north.de) -.\" -.TH perror 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -perror \- print a system error message -.SH LIBRARY -Standard C library -.RI ( libc ", " \-lc ) -.SH SYNOPSIS -.nf -.B #include <stdio.h> -.P -.BI "void perror(const char *" s ); -.P -.B #include <errno.h> -.P -.BI "int " errno "; \fR/* Not really declared this way; see errno(3) */" -.P -.BI "[[deprecated]] const char *const " sys_errlist []; -.BI "[[deprecated]] int " sys_nerr ; -.fi -.P -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.P -.IR sys_errlist , -.IR sys_nerr : -.nf - From glibc 2.19 to glibc 2.31: - _DEFAULT_SOURCE - glibc 2.19 and earlier: - _BSD_SOURCE -.fi -.SH DESCRIPTION -The -.BR perror () -function produces a message on standard error describing the last -error encountered during a call to a system or library function. -.P -First (if -.I s -is not NULL and -.I *s -is not a null byte (\[aq]\e0\[aq])), the argument string -.I s -is printed, followed by a colon and a blank. -Then an error message corresponding to the current value of -.I errno -and a new-line. -.P -To be of most use, the argument string should include the name -of the function that incurred the error. -.P -The global error list -.IR sys_errlist "[]," -which can be indexed by -.IR errno , -can be used to obtain the error message without the newline. -The largest message number provided in the table is -.IR sys_nerr "\-1." -Be careful when directly accessing this list, because new error values -may not have been added to -.IR sys_errlist "[]." -The use of -.IR sys_errlist "[]" -is nowadays deprecated; use -.BR strerror (3) -instead. -.P -When a system call fails, it usually returns \-1 and sets the -variable -.I errno -to a value describing what went wrong. -(These values can be found in -.IR <errno.h> .) -Many library functions do likewise. -The function -.BR perror () -serves to translate this error code into human-readable form. -Note that -.I errno -is undefined after a successful system call or library function call: -this call may well change this variable, even though it succeeds, -for example because it internally used some other library function that failed. -Thus, if a failing call is not immediately followed by a call to -.BR perror (), -the value of -.I errno -should be saved. -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.na -.nh -.BR perror () -T} Thread safety MT-Safe race:stderr -.TE -.SH STANDARDS -.TP -.I errno -.TQ -.BR perror () -C11, POSIX.1-2008. -.TP -.I sys_nerr -.TQ -.I sys_errlist -BSD. -.SH HISTORY -.TP -.I errno -.TQ -.BR perror () -POSIX.1-2001, C89, 4.3BSD. -.TP -.I sys_nerr -.TQ -.I sys_errlist -Removed in glibc 2.32. -.SH SEE ALSO -.BR err (3), -.BR errno (3), -.BR error (3), -.BR strerror (3) |