ct_pr_event_get_zcorefile (3contract) manual page
Name
ct_pr_event_get_pid, ct_pr_event_get_ppid, ct_pr_event_get_signal, ct_pr_event_get_sender, ct_pr_event_get_senderct, ct_pr_event_get_exitstatus,
- ct_pr_event_get_pcorefile,
- ct_pr_event_get_gcorefile, ct_pr_event_get_zcorefile - process contract event functions
Synopsis
cc [ flag... ] file... -D_LARGEFILE64_SOURCE -lcontract [ library... ]
#include <libcontract.h>
#include <sys/contract/process.h>
int ct_pr_event_get_pid(ct_evthdl_t evthdl, pid_t *pidp);
int ct_pr_event_get_ppid(ct_evthdl_t evthdl, pid_t *pidp);
int ct_pr_event_get_signal(ct_evthdl_t evthdl, int *signalp);
int ct_pr_event_get_sender(ct_evthdl_t evthdl, pid_t *pidp);
int ct_pr_event_get_senderct(ct_evthdl_t evthdl, ctid_t *pidp);
int ct_pr_event_get_exitstatus(ct_evthdl_t evthdl, int *statusp);
int ct_pr_event_get_pcorefile(ct_evthdl_t evthdl, char **namep);
int ct_pr_event_get_gcorefile(ct_evthdl_t evthdl, char **namep);
int ct_pr_event_get_zcorefile(ct_evthdl_t evthdl, char **namep);
Description
These functions read process contract event information from an event object returned by ct_event_read(3CONTRACT) or ct_event_read_critical(3CONTRACT) .
The ct_pr_event_get_pid() function reads the process ID of the process generating the event.
The ct_pr_event_get_ppid() function reads the process ID of the process that forked the new process causing the CT_PR_EV_FORK event.
The ct_pr_event_get_signal() function reads the signal number of the signal that caused the CT_PR_EV_SIGNAL event.
The ct_pr_event_get_sender() function reads the process ID of the process that sent the signal that caused the CT_PR_EV_SIGNAL event. If the signal’s sender was not in the same zone as the signal’s recipient, this information is available only to event consumers in the global zone.
The ct_pr_event_get_senderct function reads the contract ID of the process that sent the signal that caused the CT_PR_EV_SIGNAL event. If the signal’s sender was not in the same zone as the signal’s recipient, this information is available only
The ct_pr_event_get_exitstatus() function reads the exit status of the process generating a CT_PR_EV_EXIT event.
The ct_pr_event_get_pcorefile() function reads the name of the process core file if one was created when the CT_PR_EV_CORE event was generated. A pointer to a character array is stored in *namep and is freed when ct_event_free(3CONTRACT) is called on the event handle.
The ct_pr_event_get_gcorefile() function reads the name of the zone’s global core file if one was created when the CT_PR_EV_CORE event was generated. A pointer to a character array is stored in *namep and is freed when ct_event_free() is called on the event handle.
The ct_pr_event_get_zcorefile() function reads the name of the systemwide core file in the global zone if one was created when the CT_PR_EV_CORE event was generated. This information is available only to event consumers in the global zone. A pointer to a character array is stored in *namep and is freed when ct_event_free() is called on the event handle.
Return Values
Upon successful completion, ct_pr_event_get_pid(),
- ct_pr_event_get_ppid(),
- ct_pr_event_get_signal(),
- ct_pr_event_get_sender(),
- ct_pr_event_get_senderct(),
- ct_pr_event_get_exitstatus(),
- ct_pr_event_get_pcorefile(), ct_pr_event_get_gcorefile(), and ct_pr_event_get_zcorefile() return 0. Otherwise, they return a non-zero error value.
Errors
The ct_pr_event_get_pid(), ct_pr_event_get_ppid(), ct_pr_event_get_signal(),
- ct_pr_event_get_sender(),
- ct_pr_event_get_senderct(),
- ct_pr_event_get_exitstatus(),
- ct_pr_event_get_pcorefile(), ct_pr_event_get_gcorefile(), and ct_pr_event_get_zcorefile() functions will fail if:
- EINVAL
- The evthdl argument is not a process contract event object.
The ct_pr_event_get_ppid(), ct_pr_event_get_signal(),
- ct_pr_event_get_sender(),
- ct_pr_event_get_senderct(),
- ct_pr_event_get_exitstatus(),
- ct_pr_event_get_pcorefile(), ct_pr_event_get_gcorefile(), and ct_pr_event_get_zcorefile() functions will fail if:
- EINVAL
- The requested data do not match the event type.
The ct_pr_event_get_sender()a functions will fail if:
- ENOENT
- The process ID of the sender was not available, or the event object was read by a process running in a nonglobal zone and the sender was in a different zone.
The ct_pr_event_get_pcorefile(), ct_pr_event_get_gcorefile(), and ct_pr_event_get_zcorefile() functions will fail if:
- ENOENT
- The requested core file was not created.
The ct_pr_event_get_zcorefile() function will fail if:
- ENOENT
- The event object was read by a process running in a non-global zone.
Examples
Example 1: Print the instigator of all CT_PR_EV_SIGNAL events.
Open the process contract bundle. Loop reading events. Fetch and display the signalled pid and signalling pid for each CT_PR_EV_SIGNAL event encountered.
#include <sys/types.h>
#include <fcntl.h>
#include <stdio.h>
#include <libcontract.h>
- ...
- int fd; ct_evthdl_t event; pid_t pid, sender;
fd = open("/system/contract/process/bundle", O_RDONLY);
for (;;) {
ct_event_read(fd, &event);
if (ct_event_get_type(event) != CT_PR_EV_SIGNAL) {
ct_event_free(event);
continue;
}
ct_pr_event_get_pid(event, &pid);
if (ct_pr_event_get_sender(event, &sender) == ENOENT)
printf("process %ld killed by unknown process\n",
(long)pid);
else
printf("process %ld killed by process %ld\n",
(long)pid, (long)sender);
ct_event_free(event);
}
...
Attributes
See attributes(5) for descriptions of the following attributes:
tab() allbox; cw(2.750000i)| cw(2.750000i) lw(2.750000i) lw(2.750000i). ATTRIBUTE TYPEATTRIBUTE VALUE Interface StabilityEvolving MT-LevelSafe
See Also
ct_event_free(3CONTRACT) , ct_event_read(3CONTRACT) , ct_event_read_critical(3CONTRACT) , libcontract(3LIB) , contract(4) , process(4) , attributes(5) , lfcompile(5)
