75 lines
1.5 KiB
C
75 lines
1.5 KiB
C
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/* Reentrant version of rename system call. */
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#include <reent.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <_syslist.h>
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/* Some targets provides their own versions of these functions. Those
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targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */
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#ifdef _REENT_ONLY
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#ifndef REENTRANT_SYSCALLS_PROVIDED
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#define REENTRANT_SYSCALLS_PROVIDED
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#endif
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#endif
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#ifndef REENTRANT_SYSCALLS_PROVIDED
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/* We use the errno variable used by the system dependent layer. */
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#undef errno
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extern int errno;
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/*
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FUNCTION
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<<_rename_r>>---Reentrant version of rename
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INDEX
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_rename_r
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ANSI_SYNOPSIS
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#include <reent.h>
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int _rename_r(struct _reent *<[ptr]>,
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int <[fd]>, int <[cmd]>, <[arg]>);
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TRAD_SYNOPSIS
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#include <reent.h>
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int _rename_r(<[ptr]>, <[fd]>, <[cmd]>, <[arg]>)
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struct _reent *<[ptr]>;
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int <[fd]>;
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int <[cmd]>;
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int <[arg]>;
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DESCRIPTION
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This is a reentrant version of <<rename>>. It
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takes a pointer to the global data block, which holds
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<<errno>>.
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*/
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int
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_DEFUN (_rename_r, (ptr, old, new),
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struct _reent *ptr _AND
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_CONST char *old _AND
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_CONST char *new)
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{
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int ret = 0;
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#ifdef HAVE_RENAME
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errno = 0;
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if ((ret = _rename (old, new)) == -1 && errno != 0)
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ptr->_errno = errno;
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#else
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if (_link_r (ptr, old, new) == -1)
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return -1;
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if (_unlink_r (ptr, old) == -1)
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{
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/* ??? Should we unlink new? (rhetorical question) */
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return -1;
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}
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#endif
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return ret;
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}
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#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
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