From 29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:21:29 +0200 Subject: Adding upstream version 1:0.1.9998svn3589+dfsg. Signed-off-by: Daniel Baumann --- src/kmk/kmkbuiltin/ln.c | 287 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 287 insertions(+) create mode 100644 src/kmk/kmkbuiltin/ln.c (limited to 'src/kmk/kmkbuiltin/ln.c') diff --git a/src/kmk/kmkbuiltin/ln.c b/src/kmk/kmkbuiltin/ln.c new file mode 100644 index 0000000..4f80475 --- /dev/null +++ b/src/kmk/kmkbuiltin/ln.c @@ -0,0 +1,287 @@ +/*- + * Copyright (c) 1987, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if 0 +#ifndef lint +static char const copyright[] = +"@(#) Copyright (c) 1987, 1993, 1994\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)ln.c 8.2 (Berkeley) 3/31/94"; +#endif /* not lint */ +#include +__FBSDID("$FreeBSD: src/bin/ln/ln.c,v 1.33 2005/02/09 17:37:37 ru Exp $"); +#endif /* no $id */ + +#define FAKES_NO_GETOPT_H /* bird */ +#include "config.h" +#ifndef _MSC_VER +# include +#endif +#include + +#include "err.h" +#include +#include +#include +#include +#include +#include +#include "getopt_r.h" +#ifdef _MSC_VER +# include "mscfakes.h" +#endif +#include "kmkbuiltin.h" + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ +typedef struct LNINSTANCE +{ + PKMKBUILTINCTX pCtx; + int fflag; /* Unlink existing files. */ + int hflag; /* Check new name for symlink first. */ + int iflag; /* Interactive mode. */ + int sflag; /* Symbolic, not hard, link. */ + int vflag; /* Verbose output. */ + int (*linkf)(const char *, const char *); /* System link call. */ + char linkch; +} LNINSTANCE; +typedef LNINSTANCE *PLNINSTANCE; + +static struct option long_options[] = +{ + { "help", no_argument, 0, 261 }, + { "version", no_argument, 0, 262 }, + { 0, 0, 0, 0 }, +}; + + +static int linkit(PLNINSTANCE,const char *, const char *, int); +static int usage(PKMKBUILTINCTX, int); + + +int +kmk_builtin_ln(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx) +{ + LNINSTANCE This; + struct getopt_state_r gos; + struct stat sb; + char *sourcedir; + int ch, exitval; + + /* initialize globals. */ + This.pCtx = pCtx; + This.fflag = 0; + This.hflag = 0; + This.iflag = 0; + This.sflag = 0; + This.vflag = 0; + This.linkch = 0; + This.linkf = NULL; + + getopt_initialize_r(&gos, argc, argv, "fhinsv", long_options, envp, pCtx); + while ((ch = getopt_long_r(&gos, NULL)) != -1) + switch (ch) { + case 'f': + This.fflag = 1; + This.iflag = 0; + break; + case 'h': + case 'n': + This.hflag = 1; + break; + case 'i': + This.iflag = 1; + This.fflag = 0; + break; + case 's': + This.sflag = 1; + break; + case 'v': + This.vflag = 1; + break; + case 261: + usage(pCtx, 0); + return 0; + case 262: + return kbuild_version(argv[0]); + case '?': + default: + return usage(pCtx, 1); + } + + argv += gos.optind; + argc -= gos.optind; + + This.linkf = This.sflag ? symlink : link; + This.linkch = This.sflag ? '-' : '='; + + switch(argc) { + case 0: + return usage(pCtx, 1); + /* NOTREACHED */ + case 1: /* ln target */ + return linkit(&This, argv[0], ".", 1); + case 2: /* ln target source */ + return linkit(&This, argv[0], argv[1], 0); + default: + ; + } + /* ln target1 target2 directory */ + sourcedir = argv[argc - 1]; + if (This.hflag && lstat(sourcedir, &sb) == 0 && S_ISLNK(sb.st_mode)) { + /* + * We were asked not to follow symlinks, but found one at + * the target--simulate "not a directory" error + */ + errno = ENOTDIR; + return err(pCtx, 1, "st_mode: %s", sourcedir); + } + if (stat(sourcedir, &sb)) + return err(pCtx, 1, "stat: %s", sourcedir); + if (!S_ISDIR(sb.st_mode)) + return usage(pCtx, 1); + for (exitval = 0; *argv != sourcedir; ++argv) + exitval |= linkit(&This, *argv, sourcedir, 1); + return exitval; +} + +static int +linkit(PLNINSTANCE pThis, const char *target, const char *source, int isdir) +{ + struct stat sb; + const char *p; + int ch, exists, first; + char path[PATH_MAX]; + + if (!pThis->sflag) { + /* If target doesn't exist, quit now. */ + if (stat(target, &sb)) { + warn(pThis->pCtx, "stat: %s", target); + return (1); + } + /* Only symbolic links to directories. */ + if (S_ISDIR(sb.st_mode)) { + errno = EISDIR; + warn(pThis->pCtx, "st_mode: %s", target); + return (1); + } + } + + /* + * If the source is a directory (and not a symlink if hflag), + * append the target's name. + */ + if (isdir || + (lstat(source, &sb) == 0 && S_ISDIR(sb.st_mode)) || + (!pThis->hflag && stat(source, &sb) == 0 && S_ISDIR(sb.st_mode))) { +#if defined(_MSC_VER) || defined(__OS2__) + char *p2 = strrchr(target, '\\'); + p = strrchr(target, '/'); + if (p2 != NULL && (p == NULL || p2 > p)) + p = p2; + if (p == NULL) +#else + if ((p = strrchr(target, '/')) == NULL) +#endif + p = target; + else + ++p; + if (snprintf(path, sizeof(path), "%s/%s", source, p) >= + (ssize_t)sizeof(path)) { + errno = ENAMETOOLONG; + warn(pThis->pCtx, "snprintf: %s", target); + return (1); + } + source = path; + } + + exists = !lstat(source, &sb); + /* + * If the file exists, then unlink it forcibly if -f was specified + * and interactively if -i was specified. + */ + if (pThis->fflag && exists) { + if (unlink(source)) { + warn(pThis->pCtx, "unlink: %s", source); + return (1); + } + } else if (pThis->iflag && exists) { + fflush(stdout); + fprintf(stderr, "replace %s? ", source); + + first = ch = getchar(); + while(ch != '\n' && ch != EOF) + ch = getchar(); + if (first != 'y' && first != 'Y') { + kmk_builtin_ctx_printf(pThis->pCtx, 1, "not replaced\n"); + return (1); + } + + if (unlink(source)) { + warn(pThis->pCtx, "unlink: %s", source); + return (1); + } + } + + /* Attempt the link. */ + if ((*pThis->linkf)(target, source)) { + warn(pThis->pCtx, "%s: %s", pThis->linkf == link ? "link" : "symlink", source); + return (1); + } + if (pThis->vflag) + kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s %c> %s\n", source, pThis->linkch, target); + return (0); +} + +static int +usage(PKMKBUILTINCTX pCtx, int fIsErr) +{ + kmk_builtin_ctx_printf(pCtx,fIsErr, + "usage: %s [-fhinsv] source_file [target_file]\n" + " or: %s [-fhinsv] source_file ... target_dir\n" + " or: %s source_file target_file\n" + " or: %s --help\n" + " or: %s --version\n", + pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName, + pCtx->pszProgName, pCtx->pszProgName); + return 1; +} + +#ifdef KMK_BUILTIN_STANDALONE +int main(int argc, char **argv, char **envp) +{ + KMKBUILTINCTX Ctx = { "kmk_ln", NULL }; + return kmk_builtin_ln(argc, argv, envp, &Ctx); +} +#endif + -- cgit v1.2.3