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| author | Alejandro Colomar <alx@kernel.org> | 2024-04-26 15:06:49 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2024-05-02 01:24:19 +0200 |
| commit | dcde2f70372b49ec43efc5db864c9ff585d0a2dd (patch) | |
| tree | 78b9b7425130e4a5858e4c01a524d802423879ed /man3/memcmp.3 | |
| parent | 12aca537ce78a41bbcdaf485209691e10f8002d7 (diff) | |
| download | man-pages-dcde2f70372b49ec43efc5db864c9ff585d0a2dd.tar.gz | |
man/, share/mk/: Move man*/ to man/
This is a scripted change:
$ mkdir man/;
$ mv man* man/;
$ ln -st . man/man*;
$ find share/mk/ -type f \
| xargs grep -l '^MANDIR *:=' \
| xargs sed -i '/^MANDIR *:=/s,$,/man,';
$ find share/mk/dist/ -type f \
| xargs grep -l man \
| xargs sed -i 's,man%,man/%,g';
Link: <https://lore.kernel.org/linux-man/YxcV4h+Xn7cd6+q2@pevik/T/>
Cc: Petr Vorel <pvorel@suse.cz>
Cc: Jakub Wilk <jwilk@jwilk.net>
Cc: Stefan Puiu <stefan.puiu@gmail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Diffstat (limited to 'man3/memcmp.3')
| -rw-r--r-- | man3/memcmp.3 | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/man3/memcmp.3 b/man3/memcmp.3 deleted file mode 100644 index 206ddad72a..0000000000 --- a/man3/memcmp.3 +++ /dev/null @@ -1,91 +0,0 @@ -'\" t -.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) -.\" -.\" SPDX-License-Identifier: Linux-man-pages-copyleft -.\" -.\" References consulted: -.\" Linux libc source code -.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) -.\" 386BSD man pages -.\" Modified Sat Jul 24 18:55:27 1993 by Rik Faith (faith@cs.unc.edu) -.TH memcmp 3 (date) "Linux man-pages (unreleased)" -.SH NAME -memcmp \- compare memory areas -.SH LIBRARY -Standard C library -.RI ( libc ", " \-lc ) -.SH SYNOPSIS -.nf -.B #include <string.h> -.P -.BI "int memcmp(const void " s1 [. n "], const void " s2 [. n "], size_t " n ); -.fi -.SH DESCRIPTION -The -.BR memcmp () -function compares the first \fIn\fP bytes (each interpreted as -.IR "unsigned char" ) -of the memory areas \fIs1\fP and \fIs2\fP. -.SH RETURN VALUE -The -.BR memcmp () -function returns an integer less than, equal to, or -greater than zero if the first \fIn\fP bytes of \fIs1\fP is found, -respectively, to be less than, to match, or be greater than the first -\fIn\fP bytes of \fIs2\fP. -.P -For a nonzero return value, the sign is determined by the sign of -the difference between the first pair of bytes (interpreted as -.IR "unsigned char" ) -that differ in -.I s1 -and -.IR s2 . -.P -If -.I n -is zero, the return value is zero. -.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 memcmp () -T} Thread safety MT-Safe -.TE -.SH STANDARDS -C11, POSIX.1-2008. -.SH HISTORY -POSIX.1-2001, C89, SVr4, 4.3BSD. -.SH CAVEATS -Do not use -.BR memcmp () -to compare confidential data, -such as cryptographic secrets, -because the CPU time required for the comparison -depends on the contents of the addresses compared, -this function is subject to timing-based side-channel attacks. -In such cases, -a function that performs comparisons in deterministic time, -depending only on -.I n -(the quantity of bytes compared) -is required. -Some operating systems provide such a function (e.g., NetBSD's -.BR consttime_memequal ()), -but no such function is specified in POSIX. -On Linux, you may need to implement such a function yourself. -.SH SEE ALSO -.BR bstring (3), -.BR strcasecmp (3), -.BR strcmp (3), -.BR strcoll (3), -.BR strncasecmp (3), -.BR strncmp (3), -.BR wmemcmp (3) |