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Remove mktemp(3).

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This commit is contained in:
Jonas 'Sortie' Termansen 2015-02-06 16:21:19 +01:00
parent 3db8ef705e
commit 25482f875e
4 changed files with 9 additions and 42 deletions
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9
doc/obsolete-stuff
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@ -145,6 +145,15 @@ F_SETLKW) do and should be avoided for the same reasons (see above).
Use the flock (not to be confused with lockf) call instead as it works at a file
descriptor level.
mktemp
------
mktemp(3) (not the mktemp(1) utility) creates a unique path name, but creates no
file, and thus offers no guarantee that is unique with respect to other threads
and system processes. The function is racy and dangerous.
Use mkstemp(3) (or for directories mkdtemp(3)) instead.
PATH_MAX
--------

1
libc/Makefile
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@ -455,7 +455,6 @@ stdlib/mkostemp.o \
stdlib/mkostemps.o \
stdlib/mkstemp.o \
stdlib/mkstemps.o \
stdlib/mktemp.o \
stdlib/on_exit.o \
stdlib/rand.o \
stdlib/realpath.o \

4
libc/include/stdlib.h
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@ -110,10 +110,6 @@ int mkostemp(char*, int);
int mkostemps(char*, int, int);
int mkstemp(char*);
int mkstemps(char*, int);
#if !defined(__is_sortix_libc) /* not a warning inside libc */
__attribute__((__warning__("mktemp() is racy, use mkstemp()")))
#endif
char* mktemp(char* templ);
int on_exit(void (*function)(int, void*), void* arg);
void qsort(void*, size_t, size_t, int (*)(const void*, const void*));
void qsort_r(void*, size_t, size_t, int (*)(const void*, const void*, void*), void*);

37
libc/stdlib/mktemp.cpp
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@ -1,37 +0,0 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
stdlib/mktemp.cpp
Make a unique temporary filename.
*******************************************************************************/
#include <stdlib.h>
#include <string.h>
// TODO: This is a hacky implementation of a stupid function.
extern "C" char* mktemp(char* templ)
{
size_t templlen = strlen(templ);
for ( size_t i = templlen-6UL; i < templlen; i++ )
{
templ[i] = '0' + rand() % 10;
}
return templ;
}