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#include "error.h"
#include "stralloc.h"
#include "str.h"
#include "env.h"
#include "pathexec.h"
static stralloc tmp;
void pathexec_run(char *file,char **argv,char **envp)
{
char *path;
unsigned int split;
int savederrno;
if (file[str_chr(file,'/')]) {
execve(file,argv,envp);
return;
}
path = env_get("PATH");
if (!path) path = "/bin:/usr/bin";
savederrno = 0;
for (;;) {
split = str_chr(path,':');
if (!stralloc_copyb(&tmp,path,split)) return;
if (!split)
if (!stralloc_cats(&tmp,".")) return;
if (!stralloc_cats(&tmp,"/")) return;
if (!stralloc_cats(&tmp,file)) return;
if (!stralloc_0(&tmp)) return;
execve(tmp.s,argv,envp);
if (errno != error_noent) {
savederrno = errno;
if ((errno != error_acces) && (errno != error_perm) && (errno != error_isdir)) return;
}
if (!path[split]) {
if (savederrno) errno = savederrno;
return;
}
path += split;
path += 1;
}
}
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