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