gcc/libiberty/rename.c

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/* rename -- rename a file
This function is in the public domain. */
/*
@deftypefn Supplemental int rename (const char *@var{old}, const char *@var{new})
Renames a file from @var{old} to @var{new}. If @var{new} already
exists, it is removed.
@end deftypefn
*/
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#include "ansidecl.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
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#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
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int
partition.h: Remove use of PARAMS. include/ 2005-03-27 Gabriel Dos Reis <gdr@integrable-solutions.net> * partition.h: Remove use of PARAMS. * obstack.h: Remove conditional prototypes __STDC__. * objalloc.h: Remove use of PARAMS. * splay-tree.h: Likewise. libiberty/ 2005-03-27 Gabriel Dos Reis <gdr@integrable-solutions.net> Convert libiberty to use ISO C prototype style 5/n. * random.c (srandom, initstate, setstate, random): Use ISO C prototypes. * putenv.c (putenv): Likewise. * physmem.c (physmem_available, physmem_total, main): Likewise. * pex-win32.c (fix_argv, pexecute, pwait): Likewise. * pex-unix.c (pexecute, pwait): Likewise. * pex-msdos.c (pexecute, pwait): Likewise. * pex-djgpp.c (pexecute, pwait): Likewise. * partition.c (partition_new, partition_delete, partition_union) (elem_compare, partition_print): Likewise. * obstack.c (_obstack_begin, _obstack_begin_1, _obstack_newchunk, _obstack_allocated_p, _obstack_free, obstack_free, _obstack_memory_used, print_and_abort, obstack_next_free, obstack_object_size, obstack_base): Likewise. Remove codes predicated on !defined(__STDC__). * objalloc.c (objalloc_create, _objalloc_alloc, objalloc_free, objalloc_free_block): Use ISO C prototypes. * mkstemps.c (mkstemps): Likewise. * memset.c (memset): Likewise. * mempcpy.c (mempcpy): Likewise. * rename.c (rename): Likewise. * rindex.c (rindex): Likewise. * setenv.c (setenv, unsetenv): Likewise. * sigsetmask.c (sigsetmask): Likewise. * snprintf.c (snprintf): Likewise. * sort.c (sort_pointers, xmalloc): Likewise. * spaces.c (spaces): Likewise. * splay-tree.c (splay_tree_delete_helper, splay_tree_splay_helper, splay_tree_splay, splay_tree_foreach_helper, splay_tree_xmalloc_allocate, splay_tree_new, splay_tree_xmalloc_allocate, splay_tree_new_with_allocator, splay_tree_delete, splay_tree_insert, splay_tree_remove, splay_tree_lookup, splay_tree_max, splay_tree_min, splay_tree_predecessor, splay_tree_successor, splay_tree_foreach, splay_tree_compare_ints, splay_tree_compare_pointers): Likewise. * stpcpy.c (stpcpy): Likewise. * stpncpy.c (stpncpy): Likewise. * strcasecmp.c (strcasecmp): Likewise. * strchr.c (strchr): Likewise. * strdup.c (strdup): Likewise. From-SVN: r97125
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rename (const char *zfrom, const char *zto)
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{
if (link (zfrom, zto) < 0)
{
if (errno != EEXIST)
return -1;
if (unlink (zto) < 0
|| link (zfrom, zto) < 0)
return -1;
}
return unlink (zfrom);
}