Applied patch from Daniel Povey which should allow killall5/pidof to
avoid locking up if it encounters stopped or zombie processes
due to broken NFS mount points.
This should allow Debian bug #719273 to be closed.
Jesse Smith
5 years ago
| 16 | 16 | flag may not properly shut down network interfaces if the interface |
| 17 | 17 | does not have an IP address. |
| 18 | 18 | Addresses Debian bug #361935. |
| 19 | * Applied patch from Daniel Povey which should allow killall5/pidof to | |
| 20 | avoid locking up if it encounters stopped or zombie processes | |
| 21 | due to broken NFS mount points. | |
| 22 | This should allow Debian bug #719273 to be closed. | |
| 19 | 23 | |
| 20 | 24 | |
| 21 | 25 | sysvinit (2.91) world; urgency=low |
| 152 | 152 | .PP |
| 153 | 153 | When \fBinit\fP is requested to change the runlevel, it sends the |
| 154 | 154 | warning signal \s-1\fBSIGTERM\fP\s0 to all processes that are undefined |
| 155 | in the new runlevel. It then waits 5 seconds before forcibly | |
| 155 | in the new runlevel. It then waits 3 seconds before forcibly | |
| 156 | 156 | terminating these processes via the \s-1\fBSIGKILL\fP\s0 signal. |
| 157 | 157 | Note that \fBinit\fP assumes that all these processes (and their |
| 158 | 158 | descendants) remain in the same process group which \fBinit\fP |
| 177 | 177 | tell \fBinit\fP to switch to single user mode. |
| 178 | 178 | .IP "\fBU\fP or \fBu\fP" |
| 179 | 179 | tell \fBinit\fP to re-execute itself (preserving the state). No re-examining of |
| 180 | \fB/etc/inittab\fP file happens. Run level should be one of | |
| 180 | \fB/etc/inittab\fP file happens. Runlevel should be one of | |
| 181 | 181 | \fBSs0123456\fP |
| 182 | 182 | otherwise request would be silently ignored. |
| 183 | 183 | .PP |
| 2223 | 2223 | |
| 2224 | 2224 | /* |
| 2225 | 2225 | * We shouldn't be here, something failed. |
| 2226 | * Bitch, close the state pipe, unblock signals and return. | |
| 2226 | * Close the state pipe, unblock signals and return. | |
| 2227 | 2227 | */ |
| 2228 | 2228 | init_freeenv(env); |
| 2229 | 2229 | close(fd); |
| 483 | 483 | unsigned long startcode, endcode; |
| 484 | 484 | int pid, f; |
| 485 | 485 | ssize_t len; |
| 486 | char process_status[11]; | |
| 486 | 487 | |
| 487 | 488 | /* Open the /proc directory. */ |
| 488 | 489 | if (chdir("/proc") == -1) { |
| 566 | 567 | |
| 567 | 568 | /* Get session, startcode, endcode. */ |
| 568 | 569 | startcode = endcode = 0; |
| 570 | /* | |
| 569 | 571 | if (sscanf(q, "%*c %*d %*d %d %*d %*d %*u %*u " |
| 570 | 572 | "%*u %*u %*u %*u %*u %*d %*d " |
| 571 | 573 | "%*d %*d %*d %*d %*u %*u %*d " |
| 572 | 574 | "%*u %lu %lu", |
| 573 | 575 | &p->sid, &startcode, &endcode) != 3) { |
| 576 | */ | |
| 577 | if (sscanf(q, "%10s %*d %*d %d %*d %*d %*u %*u " | |
| 578 | "%*u %*u %*u %*u %*u %*d %*d " | |
| 579 | "%*d %*d %*d %*d %*u %*u %*d " | |
| 580 | "%*u %lu %lu", | |
| 581 | process_status, | |
| 582 | &p->sid, &startcode, &endcode) != 4) { | |
| 583 | ||
| 574 | 584 | p->sid = 0; |
| 575 | 585 | nsyslog(LOG_ERR, "can't read sid from %s\n", |
| 576 | 586 | path); |
| 585 | 595 | if (startcode == 0 && endcode == 0) |
| 586 | 596 | p->kernel = 1; |
| 587 | 597 | fclose(fp); |
| 598 | if ( (strchr(process_status, 'D') != NULL) || | |
| 599 | (strchr(process_status, 'Z') != NULL) ){ | |
| 600 | /* Ignore zombie processes or processes in | |
| 601 | disk sleep, as attempts | |
| 602 | to access the stats of these will | |
| 603 | sometimes fail. */ | |
| 604 | if (p->argv0) free(p->argv0); | |
| 605 | if (p->argv1) free(p->argv1); | |
| 606 | if (p->statname) free(p->statname); | |
| 607 | free(p); | |
| 608 | continue; | |
| 609 | } | |
| 588 | 610 | } else { |
| 589 | 611 | /* Process disappeared.. */ |
| 590 | 612 | if (p->argv0) free(p->argv0); |