Blame src/logic/slbt_exec_install.c

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/*******************************************************************/
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/*  slibtool: a skinny libtool implementation, written in C        */
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/*  Copyright (C) 2016  Z. Gilboa                                  */
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/*  Released under the Standard MIT License; see COPYING.SLIBTOOL. */
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/*******************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/stat.h>
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#define ARGV_DRIVER
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#include <slibtool/slibtool.h>
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#include "slibtool_install_impl.h"
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#include "slibtool_readlink_impl.h"
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#include "slibtool_spawn_impl.h"
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#include "slibtool_symlink_impl.h"
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#include "argv/argv.h"
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static int slbt_install_usage(
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	const char *			program,
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	const char *			arg,
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	const struct argv_option *	options,
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	struct argv_meta *		meta)
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{
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	char header[512];
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	snprintf(header,sizeof(header),
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		"Usage: %s --mode=install <install> [options] [SOURCE]... DEST\n"
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		"Options:\n",
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		program);
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	argv_usage(stdout,header,options,arg);
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	argv_free(meta);
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	return SLBT_USAGE;
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}
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static int slbt_exec_install_fail(
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	struct slbt_exec_ctx *	actx,
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	struct argv_meta *	meta)
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{
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	argv_free(meta);
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	slbt_free_exec_ctx(actx);
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	return -1;
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}
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static int slbt_exec_install_init_dstdir(
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	struct argv_entry *	dest,
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	struct argv_entry *	last,
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	char *			dstdir)
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{
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	struct stat	st;
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	char *		slash;
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	size_t		len;
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	if (dest)
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		last = dest;
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	/* dstdir: initial string */
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	if ((size_t)snprintf(dstdir,PATH_MAX,"%s",
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			last->arg) >= PATH_MAX)
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		return -1;
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	/* dstdir might end with a slash */
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	len = strlen(dstdir);
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	if (dstdir[--len] == '/')
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		dstdir[len] = 0;
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	/* -t DSTDIR? */
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	if (dest)
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		return 0;
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	/* is DEST a directory? */
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	if (!(stat(dstdir,&st)))
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		if (S_ISDIR(st.st_mode))
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			return 0;
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	/* remove last path component */
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	if ((slash = strrchr(dstdir,'/')))
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		*slash = 0;
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	return 0;
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}
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static int slbt_exec_install_import_libraries(
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	const struct slbt_driver_ctx *	dctx,
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	struct slbt_exec_ctx *		ectx,
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	char *				srcdso,
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	char *				dstdir)
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{
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	char *	host;
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	char *	slash;
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	char *	dot;
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	char *	mark;
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	char	srcbuf [PATH_MAX];
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	char	implib [PATH_MAX];
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	char	hosttag[PATH_MAX];
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	char	hostlnk[PATH_MAX];
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	char	major  [128];
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	char	minor  [128];
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	char	rev    [128];
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	/* .libs/libfoo.so.x.y.z */
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	if ((size_t)snprintf(srcbuf,sizeof(srcbuf),"%s",
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			srcdso) >= sizeof(srcbuf))
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		return -1;
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	/* (dso is under .libs) */
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	if (!(slash = strrchr(srcbuf,'/')))
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		return -1;
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	/* libfoo.so.x.y.z */
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	if ((size_t)snprintf(implib,sizeof(implib),"%s",
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			++slash) >= sizeof(implib)
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				    - strlen(dctx->cctx->settings.impsuffix))
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		return -1;
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	/* guard againt an infinitely long version */
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	mark = srcbuf + strlen(srcbuf);
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	/* rev */
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	if (!(dot = strrchr(srcbuf,'.')))
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		return -1;
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	else if ((size_t)(mark - dot) > sizeof(rev))
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		return -1;
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	else {
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		strcpy(rev,dot);
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		*dot = 0;
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	}
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	/* minor */
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	if (!(dot = strrchr(srcbuf,'.')))
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		return -1;
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	else if ((size_t)(mark - dot) > sizeof(minor))
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		return -1;
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	else {
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		strcpy(minor,dot);
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		*dot = 0;
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	}
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	/* major */
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	if (!(dot = strrchr(srcbuf,'.')))
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		return -1;
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	else if ((size_t)(mark - dot) > sizeof(major))
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		return -1;
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	else {
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		strcpy(major,dot);
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		*dot = 0;
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	}
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	if (!(dot = strrchr(srcbuf,'.')))
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		return -1;
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	/* .libs/libfoo.so.def.host */
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	if ((size_t)snprintf(hostlnk,sizeof(hostlnk),"%s.def.host",
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			srcbuf) >= sizeof(hostlnk))
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		return -1;
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	/* libfoo.so.def.{flavor} */
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	if (slbt_readlink(hostlnk,hosttag,sizeof(hosttag)))
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		return -1;
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	/* host/flabor */
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	if (!(host = strrchr(hosttag,'.')))
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		return -1;
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	else
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		host++;
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	/* symlink-based alternate host */
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	if (slbt_set_alternate_host(dctx,host,host))
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		return -1;
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	/* .libs/libfoo.x.y.z.lib.a */
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	sprintf(dot,"%s%s%s%s",
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		major,minor,rev,
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		dctx->cctx->asettings.impsuffix);
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	/* copy: .libs/libfoo.x.y.z.lib.a --> dstdir */
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	if (slbt_copy_file(dctx,ectx,srcbuf,dstdir))
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		return -1;
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	/* .libs/libfoo.x.lib.a */
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	sprintf(dot,"%s%s",
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		major,
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		dctx->cctx->asettings.impsuffix);
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	/* copy: .libs/libfoo.x.lib.a --> dstdir */
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	if (slbt_copy_file(dctx,ectx,srcbuf,dstdir))
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		return -1;
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	/* /dstdir/libfoo.lib.a */
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	strcpy(implib,slash);
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	strcpy(dot,dctx->cctx->asettings.impsuffix);
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	if ((size_t)snprintf(hostlnk,sizeof(hostlnk),"%s/%s",
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			dstdir,slash) >= sizeof(hostlnk))
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		return -1;
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	if (slbt_create_symlink(
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			dctx,ectx,
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			implib,
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			hostlnk,
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			false))
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		return -1;
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	return 0;
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}
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static int slbt_exec_install_library_wrapper(
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	const struct slbt_driver_ctx *	dctx,
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	struct slbt_exec_ctx *		ectx,
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	struct argv_entry *		entry,
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	char *				dstdir)
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{
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	int		ret;
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	FILE *		fsrc;
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	FILE *		fdst;
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	const char *	base;
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	char *		cfgline;
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	char *		srcline;
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	char *		dstline;
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	char		clainame[PATH_MAX];
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	char		instname[PATH_MAX];
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	char		cfgbuf  [PATH_MAX*4];
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	struct stat	st;
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	/* base libfoo.la */
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	if ((base = strrchr(entry->arg,'/')))
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		base++;
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	else
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		base = entry->arg;
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	/* /dstdir/libfoo.la */
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	if ((size_t)snprintf(instname,sizeof(instname),"%s/%s",
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			dstdir,base) >= sizeof(instname))
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		return -1;
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	/* libfoo.la.slibtool.install */
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	if ((size_t)snprintf(clainame,sizeof(clainame),"%s.slibtool.install",
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			entry->arg) >= sizeof(clainame))
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		return -1;
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	/* fdst (libfoo.la.slibtool.install, build directory) */
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	if (!(fdst = fopen(clainame,"w")))
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		return -1;
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	/* fsrc (libfoo.la, build directory) */
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	if ((stat(entry->arg,&st))) {
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		fclose(fdst);
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		return -1;
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	}
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	if (!(fsrc = fopen(entry->arg,"r"))) {
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		fclose(fdst);
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		return -1;
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	}
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	if ((size_t)st.st_size < sizeof(cfgbuf))
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		srcline = cfgbuf;
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	else if (!(srcline = malloc(st.st_size+1))) {
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		fclose(fdst);
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		fclose(fsrc);
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		return -1;
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	}
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	/* copy config, install=no --> install=yes */
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	cfgline = fgets(srcline,st.st_size+1,fsrc);
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	ret     = 0;
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	while (cfgline && (ret == 0)) {
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		dstline = !(strcmp(srcline,"installed=no\n"))
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			? "installed=yes\n"
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			: srcline;
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		if (fprintf(fdst,"%s",dstline) < 0)
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			ret = -1;
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		else
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			cfgline = fgets(srcline,st.st_size+1,fsrc);
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	}
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	/* free, flush, verify */
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	if (srcline != cfgbuf)
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		free(srcline);
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	if (ret) {
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		fclose(fdst);
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		fclose(fsrc);
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	} else {
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		fflush(fdst);
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		ret = ferror(fdst) ? -1 : 0;
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		fclose(fdst);
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		ret = ferror(fsrc) ? -1 : ret;
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		fclose(fsrc);
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	}
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	/* cp libfoo.la.slibtool.instal /dstdir/libfoo.la */
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	if (slbt_copy_file(dctx,ectx,clainame,instname))
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		return -1;
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	return 0;
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}
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static int slbt_exec_install_entry(
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	const struct slbt_driver_ctx *	dctx,
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	struct slbt_exec_ctx *		ectx,
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	struct argv_entry *		entry,
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	struct argv_entry *		last,
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	struct argv_entry *		dest,
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	char *				dstdir,
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	char **				src,
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	char **				dst)
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{
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	int		ret;
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	char *		dot;
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	char *		base;
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	char *		slash;
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	char		target  [PATH_MAX];
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	char		srcfile [PATH_MAX];
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	char		dstfile [PATH_MAX];
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	char		slnkname[PATH_MAX];
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	char		dlnkname[PATH_MAX];
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	char		lasource[PATH_MAX];
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	bool		fexe = false;
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	bool		fpe;
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	bool		frelease;
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	struct stat	st;
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	/* executable wrapper? */
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	if ((size_t)snprintf(slnkname,sizeof(slnkname),"%s.exe.wrapper",
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			entry->arg) >= sizeof(slnkname))
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		return -1;
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	fexe = stat(slnkname,&st)
5e5804
		? false
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		: true;
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	dot  = strrchr(entry->arg,'.');
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af8d17
	/* .lai --> .la */
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	if (!fexe && dot && !strcmp(dot,".lai"))
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		dot[3] = 0;
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	/* .la ? */
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	if (!fexe && (!dot || strcmp(dot,".la"))) {
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		*src = (char *)entry->arg;
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		*dst = dest ? 0 : (char *)last->arg;
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		if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
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			if (slbt_output_install(dctx,ectx))
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				return -1;
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		return (((ret = slbt_spawn(ectx,true)) < 0) || ectx->exitcode)
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			? -1 : 0;
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	}
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dfe3cc
	/* legabits? */
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	if (dctx->cctx->drvflags & SLBT_DRIVER_LEGABITS)
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		if (slbt_exec_install_library_wrapper(dctx,ectx,entry,dstdir))
dfe3cc
			return -1;
dfe3cc
9cce84
	/* *dst: consider: cp libfoo.la /dest/dir/libfoo.la */
9cce84
	if ((*dst = dest ? 0 : (char *)last->arg))
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		if ((dot = strrchr(last->arg,'.')))
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			if (!(strcmp(dot,".la")))
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				*dst = dstdir;
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	/* srcfile */
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	if (strlen(entry->arg) + strlen(".libs/") >= (PATH_MAX-1))
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		return -1;
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	strcpy(lasource,entry->arg);
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	if ((slash = strrchr(lasource,'/'))) {
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		*slash++ = 0;
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		sprintf(srcfile,"%s/.libs/%s",lasource,slash);
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	} else
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		sprintf(srcfile,".libs/%s",lasource);
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	/* executable? */
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	if (fexe) {
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		*src = srcfile;
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		if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
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			if (slbt_output_install(dctx,ectx))
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				return -1;
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		return (((ret = slbt_spawn(ectx,true)) < 0) || ectx->exitcode)
5e5804
			? -1 : 0;
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	}
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f38ea1
	/* libfoo.a */
f38ea1
	dot = strrchr(srcfile,'.');
f38ea1
	strcpy(dot,dctx->cctx->settings.arsuffix);
f38ea1
f38ea1
	if (slbt_copy_file(dctx,ectx,
f38ea1
			srcfile,
9cce84
			dest ? (char *)dest->arg : *dst))
f38ea1
		return -1;
f38ea1
112a2b
	/* dot/suffix */
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	strcpy(slnkname,srcfile);
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	dot = strrchr(slnkname,'.');
112a2b
112a2b
	/* libfoo.a --> libfoo.so.release */
112a2b
	sprintf(dot,"%s.release",dctx->cctx->settings.dsosuffix);
112a2b
	frelease = stat(slnkname,&st) ? false : true;
112a2b
112a2b
	/* libfoo.a --> libfoo.so */
b3c21a
	strcpy(dot,dctx->cctx->settings.dsosuffix);
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1c05ca
	/* PE support: does .libs/libfoo.so.def exist? */
1c05ca
	if ((size_t)snprintf(dstfile,sizeof(dstfile),"%s.def",
1c05ca
			slnkname) >= sizeof(dstfile))
1c05ca
		return -1;
1c05ca
1c05ca
	fpe = stat(dstfile,&st) ? false : true;
1c05ca
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	/* basename */
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	if ((base = strrchr(slnkname,'/')))
258073
		base++;
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	else
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		base = slnkname;
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	/* source (build) symlink target */
e8159c
	if (slbt_readlink(slnkname,target,sizeof(target)) < 0) {
b107e2
		/* -avoid-version? */
b107e2
		if (stat(slnkname,&st))
b107e2
			return -1;
b107e2
b107e2
		/* dstfile */
b107e2
		if ((size_t)snprintf(dstfile,sizeof(dstfile),"%s/%s",
b107e2
				dstdir,base) >= sizeof(dstfile))
b107e2
			return -1;
b107e2
b107e2
		/* single spawn, no symlinks */
b107e2
		*src = slnkname;
b107e2
		*dst = dest ? 0 : dstfile;
b107e2
b107e2
		if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
b107e2
			if (slbt_output_install(dctx,ectx))
b107e2
				return -1;
b107e2
b107e2
		if (((ret = slbt_spawn(ectx,true)) < 0) || ectx->exitcode)
b107e2
			return -1;
b107e2
b107e2
		return 0;
b107e2
	}
258073
dba2af
	/* -all-static? */
dba2af
	if (!strcmp(target,"/dev/null"))
dba2af
		return 0;
dba2af
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	/* srcfile: .libs/libfoo.so.x.y.z */
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	slash = strrchr(srcfile,'/');
258073
	strcpy(++slash,target);
258073
258073
	/* dstfile */
258073
	if (!dest)
258073
		if ((size_t)snprintf(dstfile,sizeof(dstfile),"%s/%s",
258073
				dstdir,target) >= sizeof(dstfile))
258073
			return -1;
258073
258073
	/* spawn */
258073
	*src = srcfile;
258073
	*dst = dest ? 0 : dstfile;
258073
258073
	if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
258073
		if (slbt_output_install(dctx,ectx))
258073
			return -1;
258073
258073
	if (((ret = slbt_spawn(ectx,true)) < 0) || ectx->exitcode)
258073
		return -1;
258073
258073
	/* destination symlink: dstdir/libfoo.so */
258073
	if ((size_t)snprintf(dlnkname,sizeof(dlnkname),"%s/%s",
258073
			dstdir,base) >= sizeof(dlnkname))
258073
		return -1;
258073
258073
	/* create symlink: libfoo.so --> libfoo.so.x.y.z */
258073
	if (slbt_create_symlink(
258073
			dctx,ectx,
258073
			target,dlnkname,
258073
			false))
258073
		return -1;
258073
112a2b
	if (frelease)
112a2b
		return 0;
112a2b
258073
	/* libfoo.so.x.y.z --> libfoo.so.x */
258073
	strcpy(slnkname,target);
258073
258073
	if ((dot = strrchr(slnkname,'.')))
239674
		*dot = 0;
258073
	else
258073
		return -1;
258073
258073
	if ((dot = strrchr(slnkname,'.')))
239674
		*dot = 0;
258073
	else
258073
		return -1;
258073
258073
	/* destination symlink: dstdir/libfoo.so.x */
258073
	if ((size_t)snprintf(dlnkname,sizeof(dlnkname),"%s/%s",
258073
			dstdir,slnkname) >= sizeof(dlnkname))
258073
		return -1;
258073
1c05ca
	if (fpe) {
1c05ca
		/* copy: .libs/libfoo.so.x.y.z --> libfoo.so.x */
1c05ca
		if (slbt_copy_file(
1c05ca
				dctx,ectx,
1c05ca
				srcfile,
1c05ca
				dlnkname))
1c05ca
			return -1;
c6e3d1
c6e3d1
		/* import libraries */
c6e3d1
		if (slbt_exec_install_import_libraries(
c6e3d1
				dctx,ectx,
c6e3d1
				srcfile,
c6e3d1
				dstdir))
c6e3d1
			return -1;
1c05ca
	} else {
1c05ca
		/* create symlink: libfoo.so.x --> libfoo.so.x.y.z */
1c05ca
		if (slbt_create_symlink(
1c05ca
				dctx,ectx,
1c05ca
				target,dlnkname,
1c05ca
				false))
1c05ca
			return -1;
1c05ca
	}
258073
258073
	return 0;
258073
}
258073
258073
int slbt_exec_install(
258073
	const struct slbt_driver_ctx *	dctx,
258073
	struct slbt_exec_ctx *		ectx)
258073
{
258073
	int				ret;
258073
	char **				argv;
668906
	char **				iargv;
258073
	char **				src;
258073
	char **				dst;
258073
	struct slbt_exec_ctx *		actx;
258073
	struct argv_meta *		meta;
258073
	struct argv_entry *		entry;
258073
	struct argv_entry *		copy;
258073
	struct argv_entry *		dest;
258073
	struct argv_entry *		last;
258073
	char				dstdir[PATH_MAX];
258073
	const struct argv_option *	options = slbt_install_options;
258073
c4a389
	/* dry run */
c4a389
	if (dctx->cctx->drvflags & SLBT_DRIVER_DRY_RUN)
c4a389
		return 0;
c4a389
258073
	/* context */
258073
	if (ectx)
258073
		actx = 0;
258073
	else if ((ret = slbt_get_exec_ctx(dctx,&ectx)))
258073
		return ret;
258073
	else
258073
		actx = ectx;
258073
258073
	/* initial state, install mode skin */
258073
	slbt_reset_arguments(ectx);
258073
	slbt_disable_placeholders(ectx);
668906
	iargv = ectx->cargv;
668906
668906
	/* work around non-conforming uses of --mode=install */
668906
	if (!(strcmp(iargv[0],"/bin/sh")) || !strcmp(iargv[0],"/bin/bash"))
668906
		iargv++;
258073
258073
	/* missing arguments? */
668906
	if (!iargv[1] && (dctx->cctx->drvflags & SLBT_DRIVER_VERBOSITY_USAGE))
258073
		return slbt_install_usage(dctx->program,0,options,0);
258073
258073
	/* <install> argv meta */
258073
	if (!(meta = argv_get(
668906
			iargv,
258073
			options,
258073
			dctx->cctx->drvflags & SLBT_DRIVER_VERBOSITY_ERRORS
258073
				? ARGV_VERBOSITY_ERRORS
258073
				: ARGV_VERBOSITY_NONE)))
258073
		return slbt_exec_install_fail(actx,meta);
258073
258073
	/* dest, alternate argument vector options */
258073
	argv = ectx->altv;
258073
	copy = meta->entries;
258073
	dest = 0;
258073
	last = 0;
258073
668906
	*argv++ = iargv[0];
258073
258073
	for (entry=meta->entries; entry->fopt || entry->arg; entry++) {
258073
		if (entry->fopt) {
258073
			switch (entry->tag) {
258073
				case TAG_INSTALL_COPY:
258073
					*argv++ = "-c";
258073
					copy = entry;
258073
					break;
258073
258073
				case TAG_INSTALL_MKDIR:
258073
					*argv++ = "-d";
258073
					copy = 0;
258073
					break;
258073
258073
				case TAG_INSTALL_TARGET_MKDIR:
258073
					*argv++ = "-D";
258073
					copy = 0;
258073
					break;
258073
258073
				case TAG_INSTALL_STRIP:
258073
					*argv++ = "-s";
258073
					break;
258073
258073
				case TAG_INSTALL_PRESERVE:
258073
					*argv++ = "-p";
258073
					break;
258073
258073
				case TAG_INSTALL_USER:
258073
					*argv++ = "-o";
258073
					break;
258073
258073
				case TAG_INSTALL_GROUP:
258073
					*argv++ = "-g";
258073
					break;
258073
258073
				case TAG_INSTALL_MODE:
258073
					*argv++ = "-m";
258073
					break;
258073
258073
				case TAG_INSTALL_DSTDIR:
258073
					*argv++ = "-t";
258073
					dest = entry;
258073
					break;
258073
			}
258073
258073
			if (entry->fval)
258073
				*argv++ = (char *)entry->arg;
258073
		} else
258073
			last = entry;
258073
	}
258073
258073
	/* install */
258073
	if (copy) {
258073
		/* using alternate argument vector */
258073
		ectx->argv    = ectx->altv;
258073
		ectx->program = ectx->altv[0];
258073
258073
		/* marks */
258073
		src = argv++;
258073
		dst = argv++;
258073
258073
		/* dstdir */
258073
		if (slbt_exec_install_init_dstdir(dest,last,dstdir))
258073
			return slbt_exec_install_fail(actx,meta);
258073
258073
		/* install entries one at a time */
258073
		for (entry=meta->entries; entry->fopt || entry->arg; entry++)
258073
			if (!entry->fopt && (dest || (entry != last)))
258073
				if (slbt_exec_install_entry(
258073
						dctx,ectx,
258073
						entry,last,
258073
						dest,dstdir,
258073
						src,dst))
258073
					return slbt_exec_install_fail(actx,meta);
258073
	} else {
258073
		/* using original argument vector */
258073
		ectx->argv    = ectx->cargv;
258073
		ectx->program = ectx->cargv[0];
258073
258073
		/* spawn */
258073
		if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
258073
			if (slbt_output_install(dctx,ectx))
258073
				return -1;
258073
258073
		if (((ret = slbt_spawn(ectx,true)) < 0) || ectx->exitcode)
258073
			return slbt_exec_install_fail(actx,meta);
258073
	}
258073
258073
	argv_free(meta);
258073
	slbt_free_exec_ctx(actx);
258073
258073
	return 0;
258073
}