Extended Library Functions - Part 1
ct_event_read_critical(3CONTRACT)
ct_pr_event_get_exitstatus(3CONTRACT)
ct_pr_event_get_gcorefile(3CONTRACT)
ct_pr_event_get_pcorefile(3CONTRACT)
ct_pr_event_get_pid(3CONTRACT)
ct_pr_event_get_ppid(3CONTRACT)
ct_pr_event_get_sender(3CONTRACT)
ct_pr_event_get_senderct(3CONTRACT)
ct_pr_event_get_zcorefile(3CONTRACT)
ct_pr_status_get_contracts(3CONTRACT)
ct_pr_status_get_fatal(3CONTRACT)
ct_pr_status_get_members(3CONTRACT)
ct_pr_status_get_param(3CONTRACT)
ct_pr_tmpl_get_fatal(3CONTRACT)
ct_pr_tmpl_get_param(3CONTRACT)
ct_pr_tmpl_get_transfer(3CONTRACT)
ct_pr_tmpl_set_fatal(3CONTRACT)
ct_pr_tmpl_set_param(3CONTRACT)
ct_pr_tmpl_set_transfer(3CONTRACT)
ct_status_get_cookie(3CONTRACT)
ct_status_get_critical(3CONTRACT)
ct_status_get_holder(3CONTRACT)
ct_status_get_informative(3CONTRACT)
ct_status_get_nevents(3CONTRACT)
ct_status_get_nevid(3CONTRACT)
ct_status_get_ntime(3CONTRACT)
ct_status_get_qtime(3CONTRACT)
ct_status_get_state(3CONTRACT)
ct_status_get_zoneid(3CONTRACT)
ct_tmpl_get_critical(3CONTRACT)
ct_tmpl_get_informative(3CONTRACT)
ct_tmpl_set_critical(3CONTRACT)
ct_tmpl_set_informative(3CONTRACT)
dat_evd_clear_unwaitable(3DAT)
dat_get_consumer_context(3DAT)
Extended Library Functions - Part 2
Extended Library Functions - Part 3
Extended Library Functions - Part 4
- process contract event functions
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);
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 system-wide 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.
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.
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:
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:
The requested data do not match the event type.
The ct_pr_event_get_sender()a functions will fail if:
The process ID of the sender was not available, or the event object was read by a process running in a non-global 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:
The requested core file was not created.
The ct_pr_event_get_zcorefile() function will fail if:
The event object was read by a process running in a non-global zone.
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); } ...
See attributes(5) for descriptions of the following attributes:
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ct_event_free(3CONTRACT), ct_event_read(3CONTRACT), ct_event_read_critical(3CONTRACT), libcontract(3LIB), contract(4), process(4), attributes(5), lfcompile(5)