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/*******************************************************************/
/* slibtool: a skinny libtool implementation, written in C */
/* Copyright (C) 2016--2024 SysDeer Technologies, LLC */
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include <slibtool/slibtool.h>
#include "slibtool_driver_impl.h"
#include "slibtool_errinfo_impl.h"
#include "slibtool_linkcmd_impl.h"
#include "slibtool_mapfile_impl.h"
#include "slibtool_metafile_impl.h"
#include "slibtool_snprintf_impl.h"
#include "slibtool_symlink_impl.h"
#include "slibtool_spawn_impl.h"
#include "slibtool_visibility_impl.h"
static int slbt_exec_link_create_noop_symlink(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
const char * arfilename)
{
struct stat st;
int fdcwd;
/* fdcwd */
fdcwd = slbt_driver_fdcwd(dctx);
/* file exists? */
if (!fstatat(fdcwd,arfilename,&st,AT_SYMLINK_NOFOLLOW))
return 0;
/* needed? */
if (errno == ENOENT) {
if (slbt_create_symlink(
dctx,ectx,
"/dev/null",
arfilename,
SLBT_SYMLINK_LITERAL))
return SLBT_NESTED_ERROR(dctx);
return 0;
}
return SLBT_SYSTEM_ERROR(dctx,arfilename);
}
static int slbt_exec_link_remove_file(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
const char * target)
{
int fdcwd;
(void)ectx;
/* fdcwd */
fdcwd = slbt_driver_fdcwd(dctx);
/* remove target (if any) */
if (!unlinkat(fdcwd,target,0) || (errno == ENOENT))
return 0;
return SLBT_SYSTEM_ERROR(dctx,0);
}
slbt_hidden int slbt_exec_link_create_archive(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
const char * arfilename,
bool fpic)
{
int fdcwd;
char ** argv;
char ** aarg;
char ** parg;
char program[PATH_MAX];
char output [PATH_MAX];
/* -disable-static? */
if (dctx->cctx->drvflags & SLBT_DRIVER_DISABLE_STATIC)
if (dctx->cctx->rpath)
return slbt_exec_link_create_noop_symlink(
dctx,ectx,arfilename);
/* dlopen, dlpreopen: object compilation (derived from dynamic linking) */
if (ectx->dlopenobj) {
slbt_ectx_reset_arguments(ectx);
slbt_reset_placeholders(ectx);
if (slbt_exec_link_create_library(
dctx,ectx,
"@ARDLOPEN",
"@ARDLOPEN",
"@ARDLOPEN",
true) < 0)
return SLBT_NESTED_ERROR(dctx);
}
/* restore initial state */
slbt_ectx_reset_arguments(ectx);
/* placeholders */
slbt_reset_placeholders(ectx);
/* output */
if (slbt_snprintf(output,sizeof(output),
"%s",arfilename) < 0)
return SLBT_BUFFER_ERROR(dctx);
/* tool-specific argument vector */
argv = (slbt_get_driver_ictx(dctx))->host.ar_argv;
/* fdcwd */
fdcwd = slbt_driver_fdcwd(dctx);
/* input argument adjustment */
aarg = ectx->altv;
if ((parg = argv)) {
for (; *parg; )
*aarg++ = *parg++;
} else {
*aarg++ = program;
}
*aarg++ = "-crs";
*aarg++ = output;
for (parg=ectx->cargv; *parg; parg++)
if (slbt_adjust_object_argument(*parg,fpic,!fpic,fdcwd))
*aarg++ = *parg;
if (ectx->dlopenobj)
*aarg++ = ectx->dlopenobj;
*aarg = 0;
ectx->argv = ectx->altv;
/* ar program */
if (argv) {
ectx->program = argv[0];
} else {
if (slbt_snprintf(program,sizeof(program),
"%s",dctx->cctx->host.ar) < 0)
return SLBT_BUFFER_ERROR(dctx);
ectx->program = program;
}
/* step output */
if (!(dctx->cctx->drvflags & SLBT_DRIVER_SILENT))
if (slbt_output_link(ectx))
return SLBT_NESTED_ERROR(dctx);
/* remove old archive as needed */
if (slbt_exec_link_remove_file(dctx,ectx,output))
return SLBT_NESTED_ERROR(dctx);
/* .deps */
if (slbt_exec_link_create_dep_file(
dctx,ectx,ectx->cargv,
arfilename,true))
return SLBT_NESTED_ERROR(dctx);
/* ar spawn */
if ((slbt_spawn(ectx,true) < 0) && (ectx->pid < 0)) {
return SLBT_SPAWN_ERROR(dctx);
} else if (ectx->exitcode) {
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_ERROR);
}
/* input objects associated with .la archives */
for (parg=ectx->cargv; *parg; parg++)
if (slbt_adjust_wrapper_argument(*parg,true))
if (slbt_util_import_archive(ectx,output,*parg))
return SLBT_NESTED_ERROR(dctx);
return 0;
}
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