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/*******************************************************************/
/* slibtool: a skinny libtool implementation, written in C */
/* Copyright (C) 2017 Z. Gilboa */
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/
#include <limits.h>
#include <unistd.h>
#include <stdbool.h>
#include <errno.h>
#include <sys/wait.h>
#ifndef PATH_MAX
#define PATH_MAX (_XOPEN_PATH_MAX < 4096) ? 4096 : _XOPEN_PATH_MAX
#endif
#ifndef SLBT_USE_FORK
#ifndef SLBT_USE_VFORK
#ifndef SLBT_USE_POSIX_SPAWN
#define SLBT_USE_POSIX_SPAWN
#endif
#endif
#endif
#ifdef SLBT_USE_POSIX_SPAWN
#include <spawn.h>
#endif
extern char ** environ;
static inline int slbt_spawn(
struct slbt_exec_ctx * ectx,
bool fwait)
{
pid_t pid;
#ifdef SLBT_USE_POSIX_SPAWN
if (posix_spawnp(
&pid,
ectx->program,
0,0,
ectx->argv,
ectx->envp ? ectx->envp : environ))
pid = -1;
#else
#ifdef SLBT_USE_FORK
pid = fork();
#else
pid = vfork();
#endif
#endif
if (pid < 0)
return -1;
if (pid == 0)
return execvp(
ectx->program,
ectx->argv);
errno = 0;
ectx->pid = pid;
if (fwait)
return waitpid(
pid,
&ectx->exitcode,
0);
return 0;
}
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