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libposix: deep refactor; add sys/posixly command

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With these changes, libposix (and newlib) can run MirBSD Korn Shell.
This commit is contained in:
Giacomo Tesio
2017-09-11 01:01:11 +02:00
parent 2f99fb162f
commit 001069aa7b
56 changed files with 4939 additions and 608 deletions
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82
qa/lib/newlib/121-fcntl.c Normal file
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#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
void
fail_if_still_open(int fd)
{
if(fd == 0){
printf("atoi failed\n");
exit(2);
}
if(fcntl(fd, F_GETFD) != -1){
printf("fd %d is still open\n", fd);
exit(3);
}
}
int
main(int argc, char *argv[])
{
int sync[2];
int outfd;
int nullfd;
int tmp;
char *eargv[7], *p;
char buf[128];
if(argc == 1){
printf("cat /proc/%d/fd\n", getpid());
pipe(sync);
outfd = dup(1);
nullfd = open("/dev/null", O_WRONLY);
tmp = fcntl(sync[0], F_DUPFD_CLOEXEC, 1);
close(sync[0]);
sync[0] = tmp;
tmp = fcntl(sync[1], F_DUPFD_CLOEXEC, 1);
close(sync[1]);
sync[1] = tmp;
tmp = fcntl(outfd, F_DUPFD_CLOEXEC, 1);
close(outfd);
outfd = tmp;
tmp = fcntl(nullfd, F_DUPFD_CLOEXEC, 1);
close(nullfd);
nullfd = tmp;
eargv[0] = argv[0];
p = buf;
eargv[1] = p;
p += 1+sprintf(p, "%d", sync[0]);
eargv[2] = p;
p += 1+sprintf(p, "%d", sync[1]);
eargv[3] = p;
p += 1+sprintf(p, "%d", outfd);
eargv[4] = p;
p += 1+sprintf(p, "%d", nullfd);
eargv[5] = NULL;
execvp(argv[0], eargv);
printf("execvp returned\n");
exit(100);
} else if(argc != 5){
printf("argc = %d (should be 5)\n", argc);
exit(1);
}
printf("argc = %d; fds: %s %s %s %s\n", argc, argv[1], argv[2], argv[3], argv[4] );
sync[0] = atoi(argv[1]);
sync[1] = atoi(argv[2]);
outfd = atoi(argv[3]);
nullfd = atoi(argv[4]);
fail_if_still_open(sync[0]);
fail_if_still_open(sync[1]);
fail_if_still_open(outfd);
fail_if_still_open(nullfd);
exit(0);
}