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/*******************************************************************/
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/* slibtool: a skinny libtool implementation, written in C */
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/* Copyright (C) 2017 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 <limits.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <sys/wait.h>
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#include <slibtool/slibtool.h>
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#include "slibtool_spawn_impl.h"
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#include "slibtool_errinfo_impl.h"
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static char * slbt_mri_argument(
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char * arg,
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char * buf)
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{
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int i;
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char * lnk;
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char * target;
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char mricwd[PATH_MAX];
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char dstbuf[PATH_MAX];
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if ((!(strchr(arg,'+'))) && (!(strchr(arg,'-'))))
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return arg;
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if (arg[0] == '/')
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target = arg;
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else {
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if (!(getcwd(mricwd,sizeof(mricwd))))
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return 0;
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if ((size_t)snprintf(dstbuf,sizeof(dstbuf),"%s/%s",
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mricwd,arg) >= sizeof(dstbuf))
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return 0;
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target = dstbuf;
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}
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for (i=0,lnk=0; i<1024 && !lnk; i++) {
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if (!(tmpnam(buf)))
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return 0;
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if (!(symlink(target,buf)))
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lnk = buf;
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}
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return lnk;
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}
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static void slbt_archive_import_child(
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char * program,
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int fd[2])
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{
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char * argv[3];
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argv[0] = program;
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argv[1] = "-M";
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argv[2] = 0;
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close(fd[1]);
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close(0);
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if (dup(fd[0]) == 0)
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execvp(program,argv);
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exit(EXIT_FAILURE);
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}
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int slbt_archive_import(
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const struct slbt_driver_ctx * dctx,
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struct slbt_exec_ctx * ectx,
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char * dstarchive,
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char * srcarchive)
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{
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int ret;
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pid_t pid;
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pid_t rpid;
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int fd[2];
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FILE * fout;
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char * dst;
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char * src;
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char mridst [L_tmpnam];
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char mrisrc [L_tmpnam];
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char program[PATH_MAX];
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if ((size_t)snprintf(program,sizeof(program),"%s",
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dctx->cctx->host.ar) >= sizeof(program))
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return SLBT_BUFFER_ERROR(dctx);
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if (pipe(fd))
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return SLBT_SYSTEM_ERROR(dctx);
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if ((pid = fork()) < 0) {
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close(fd[0]);
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close(fd[1]);
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return SLBT_SYSTEM_ERROR(dctx);
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}
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if (pid == 0)
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slbt_archive_import_child(
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program,
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fd);
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ectx->pid = pid;
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dst = slbt_mri_argument(dstarchive,mridst);
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src = slbt_mri_argument(srcarchive,mrisrc);
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if ((fout = fdopen(fd[1],"a"))) {
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ret = (fprintf(
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fout,
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"OPEN %s\n"
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"ADDLIB %s\n"
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"SAVE\n"
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"END\n",
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dst,
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src) < 0)
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? SLBT_SYSTEM_ERROR(dctx)
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: 0;
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fclose(fout);
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close(fd[0]);
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} else {
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ret = SLBT_SYSTEM_ERROR(dctx);
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close(fd[0]);
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close(fd[1]);
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}
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rpid = waitpid(
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pid,
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&ectx->exitcode,
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0);
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if (dst == mridst)
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unlink(dst);
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if (src == mrisrc)
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unlink(src);
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return ret || (rpid != pid) || ectx->exitcode
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? SLBT_CUSTOM_ERROR(dctx,SLBT_ERR_ARCHIVE_IMPORT) : 0;
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}
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