wireguard-linux - WireGuard for the Linux kernel

Age	Commit message (Expand)	Author	Files	Lines
2008-07-29	sh: migrate to arch/sh/include/	Paul Mundt	1	-12/+0
2008-07-28	sh: Add memory chunks to SH-Mobile UIO devices	Magnus Damm	1	-0/+5
2006-12-01	Driver core: add dev_archdata to struct device	Benjamin Herrenschmidt	1	-0/+7

/* `sln' program to create symboblic links between files. Copyright (C) 1998 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include <errno.h> #include <ctype.h> #include <stdio.h> #include <string.h> #include <limits.h> #if !defined(S_ISDIR) && defined(S_IFDIR) #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) #endif static int makesymlink __P ((const char *src, const char *dest)); static int makesymlinks __P ((const char *file)); int main (int argc, char **argv) { switch (argc) { case 2: return makesymlinks (argv [1]) == 0 ? 0 : 1; break; case 3: return makesymlink (argv [1], argv [2]) == 0 ? 0 : 1; break; default: printf ("Usage: %s src dest|file\n", argv [0]); return 1; break; } } static int makesymlinks (file) const char *file; { #ifndef PATH_MAX #define PATH_MAX 4095 #endif char buffer [PATH_MAX * 4]; int i, ret, len; int lineno; const char *src; const char *dest; const char *error; FILE *fp; fp = fopen (file, "r"); if (fp == NULL) { error = strerror (errno); fprintf (stderr, "%s: file open error: %s\n", file, error); return -1; } ret = 0; lineno = 0; while (fgets (buffer, sizeof (buffer) - 1, fp)) { lineno++; src = dest = NULL; buffer [sizeof (buffer) - 1] = '\0'; len = strlen (buffer); for (i = 0; i < len && isspace (buffer [i]); i++); if (i >= len) { fprintf (stderr, "Fail to parse line %d: \"%s\"\n", lineno, buffer); ret--; continue; } src = &buffer [i]; for (; i < len && !isspace (buffer [i]); i++); if (i < len) { buffer [i++] = '\0'; for (; i < len && isspace (buffer [i]); i++); if (i >= len) { fprintf (stderr, "No target in line %d: \"%s\"\n", lineno, buffer); ret--; continue; } dest = &buffer [i]; for (; i < len && !isspace (buffer [i]); i++); buffer [i] = '\0'; } else { fprintf (stderr, "No target in line %d: \"%s\"\n", lineno, buffer); ret--; continue; } if (makesymlink (src, dest)) { fprintf (stderr, "Failed to make link from \"%s\" to \"%s\" in line %d\n", src, dest, lineno); ret--; } } fclose (fp); return ret; } static int makesymlink (src, dest) const char *src; const char *dest; { struct stat stats; const char *error; /* Destination must not be a directory. */ if (lstat (dest, &stats) == 0) { if (S_ISDIR (stats.st_mode)) { fprintf (stderr, "%s: destination must not be a directory\n", dest); return -1; } else if (unlink (dest) && errno != ENOENT) { fprintf (stderr, "%s: failed to remove the old destination\n", dest); return -1; } } else if (errno != ENOENT) { error = strerror (errno); fprintf (stderr, "%s: invalid destination: %s\n", dest, error); return -1; } #ifdef S_ISLNK if (symlink (src, dest) == 0) #else if (link (src, dest) == 0) #endif { /* Destination must exist by now. */ if (access (dest, F_OK)) { error = strerror (errno); unlink (dest); fprintf (stderr, "Invalid link from \"%s\" to \"%s\": %s\n", src, dest, error); return -1; } return 0; } else { error = strerror (errno); fprintf (stderr, "Invalid link from \"%s\" to \"%s\": %s\n", src, dest, error); return -1; } }