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/* again DJB; see http://cr.yp.to */
#include <unistd.h>
#include <errno.h>
#include <alloca.h>
#include <stdlib.h>
#include "../ninitfeatures.h"
void pathexec_run(char *file,char **argv,char **envp) /*EXTRACT_INCL*/ {
char *path,*tmp;
int savederrno=0;
unsigned int len, next, file_len;
if (file[str_chr(file,'/')]) { execve(file,argv,envp); return; }
file_len = str_len(file) + 1;
path = env_get("PATH");
if (!path) path = "/bin:/usr/bin";
tmp = alloca(4 + str_len(path) + file_len);
if (!tmp) { errno=ENOMEM; return; }
for (;;) {
next = str_chr(path,':');
len = next;
if (next==0) { tmp[0] = '.'; len = 1; }
else { byte_copy(tmp,next,path); }
tmp[len] = '/';
byte_copy(tmp+len+1, file_len, file);
execve(tmp,argv,envp);
if (errno != ENOENT) {
savederrno = errno;
if ((errno != EACCES) && (errno != ENOEXEC) && (errno != ENOTDIR)) return;
}
if (path[next]==0) {
if (savederrno) errno = savederrno;
return;
}
path += (next+1);
}
}
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