Here is an implementation of file-retriever in C, since its TODO file
expressed an interest in having one.
2 files attached.
Regards: David Weinehall
--
/> David Weinehall <[EMAIL PROTECTED]> /> Northern lights wander <\
// Maintainer of the v2.0 kernel // Dance across the winter sky //
\> http://www.acc.umu.se/~tao/ </ Full colour fire </
/* file-retriever -- file-retriever for debian-installer
*
* Copyright (C) 2002 David Weinehall
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef PATH_MAX
static int pathmax = PATH_MAX;
#else
static int pathmax = 0;
#endif /* PATH_MAX */
#define PATH_MAX_GUESS 1024
int main(int argc, char **argv)
{
char *oldpath = NULL;
char *buf = NULL;
char *wd = NULL;
char *p = NULL;
int status = 0;
errno = 0;
if (argc != 3) {
status = EINVAL;
goto EXIT;
}
/* `pwd` */
if (!pathmax) {
if ((pathmax = pathconf("/", _PC_PATH_MAX)) < 0) {
if (!errno)
pathmax = PATH_MAX_GUESS;
else
goto EXIT;
} else {
pathmax++;
}
}
if (!(buf = malloc(pathmax + 1))) {
status = errno;
goto EXIT;
}
if (!(wd = getcwd(buf, pathmax))) {
status = errno;
goto EXIT;
}
/* `pwd`/debs/$1 */
if (!(oldpath = malloc(strlen(wd) +
strlen("/debs/") + strlen(argv[1]) + 1))) {
status = errno;
goto EXIT;
}
p = oldpath;
strcpy(p, wd);
p = oldpath + strlen(oldpath);
strcpy(p, "/debs/");
p = oldpath + strlen(oldpath);
strcpy(p, argv[1]);
/* ln -sf `pwd`/debs/$1 $2 */
if (!unlink(argv[2]) && errno && errno != ENOENT) {
status = errno;
goto EXIT;
}
errno = 0;
if (!(symlink(oldpath, argv[2])))
status = errno;
EXIT:
free(oldpath);
free(buf);
return status;
}
# Makefile for file-retriever
# Copyright (C) 2002 David Weinehall
CFLAGS += -O2 -g
CFLAGS += -W -Wall -Wshadow -Wpointer-arith -Wundef -Wcast-align
CFLAGS += -Wbad-function-cast -Wwrite-strings -Wsign-compare
CFLAGS += -Waggregate-return -Wmissing-noreturn -Wnested-externs
TARGETS = file-retriever
.PHONY: bin
bin: $(TARGETS)
$(TARGETS): %: %.c
$(CC) $(CFLAGS) -o $@ $^
.PHONY: small
small: CFLAGS := -Os $(CFLAGS)
small: $(TARGETS)
.PHONY: clean
clean:
rm -f $(TARGETS) core
