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/*
* procctl -- clear the event mask, and continue, any specified processes.
* This is largely an example of how to use the procfs interface; however,
* for now, it is also sometimes necessary, as a stopped process will not
* otherwise continue. (This will be fixed in a later version of the
* procfs code, almost certainly; however, this program will still be useful
* for some annoying circumstances.)
*/
/*
* $Id: procctl.c,v 1.1 1997/12/06 04:19:09 sef Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <err.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/pioctl.h>
main(int ac, char **av) {
int fd;
int i;
unsigned int mask;
char **command;
struct procfs_status pfs;
for (i = 1; i < ac; i++) {
char buf[32];
sprintf(buf, "/proc/%s/mem", av[i]);
fd = open(buf, O_RDWR);
if (fd == -1) {
if (errno == ENOENT)
continue;
fprintf(stderr, "%s: cannot open pid %s: %s\n",
av[0], av[i], strerror(errno));
continue;
}
if (ioctl(fd, PIOCBIC, ~0) == -1) {
fprintf(stderr, "%s: cannot clear process %s's event mask: %s\n",
av[0], av[i], strerror(errno));
}
if (ioctl(fd, PIOCCONT, 0) == -1 && errno != EINVAL) {
fprintf(stderr, "%s: cannot continue process %s: %s\n",
av[0], av[i], strerror(errno));
}
close(fd);
}
return 0;
}
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