/* Lookup the latest process contract */
static ctid_t
get_active_process_contract_id(void)
{
int stat_fd;
ctid_t ctid = -1;
ct_stathdl_t stathdl;
if ((stat_fd = open64(CT_LATEST, O_RDONLY)) == -1) {
error("%s: Error opening 'latest' process "
"contract: %s", __func__, strerror(errno));
return -1;
}
if (ct_status_read(stat_fd, CTD_COMMON, &stathdl) != 0) {
error("%s: Error reading process contract "
"status: %s", __func__, strerror(errno));
goto out;
}
if ((ctid = ct_status_get_id(stathdl)) < 0) {
error("%s: Error getting process contract id: %s",
__func__, strerror(errno));
goto out;
}
ct_status_free(stathdl);
out:
close(stat_fd);
return ctid;
}
/**
* Checks how many pid's exist in a given contract
*
* @param contractid {int} the contract ID to check
*
* @returns the number of pids in a contract, or a negative number
* with errno set on failure
*/
int num_pids_in_contract(int contractid) {
char contract_file[256]; /* /system/contract/all/<ctid>/status */
ct_stathdl_t stathdl; /* contract stat handle */
snprintf(contract_file,
sizeof(contract_file) / sizeof(*contract_file),
"/system/contract/all/%d/status",
contractid);
int fd = open(contract_file, O_RDONLY | O_LARGEFILE);
if (fd < 0)
return -3;
if (ct_status_read(fd, CTD_ALL, &stathdl) != 0) {
close(fd);
return -4;
}
close(fd);
pid_t *members;
uint_t numpids;
int err = 0;
if ((err = ct_pr_status_get_members(stathdl, &members, &numpids)))
return -5;
ct_status_free(stathdl);
return numpids;
}
static void rtSolarisContractPostForkParent(int templateFd, pid_t pid)
{
if (templateFd == -1)
return;
/* Clear the active template. */
int cleared = ct_tmpl_clear(templateFd);
close(templateFd);
/* If the clearing failed or the fork failed there's nothing more to do. */
if (cleared || pid <= 0)
return;
/* Look up the contract which was created by this thread. */
int statFd = open64(CTFS_ROOT "/process/latest", O_RDONLY);
if (statFd == -1)
return;
ct_stathdl_t statHdl;
if (ct_status_read(statFd, CTD_COMMON, &statHdl))
{
close(statFd);
return;
}
ctid_t ctId = ct_status_get_id(statHdl);
ct_status_free(statHdl);
close(statFd);
if (ctId < 0)
return;
/* Abandon this contract we just created. */
char ctlPath[PATH_MAX];
size_t len = snprintf(ctlPath, sizeof(ctlPath),
CTFS_ROOT "/process/%ld/ctl", (long)ctId);
if (len >= sizeof(ctlPath))
return;
int ctlFd = open64(ctlPath, O_WRONLY);
if (statFd == -1)
return;
if (ct_ctl_abandon(ctlFd) < 0)
{
close(ctlFd);
return;
}
close(ctlFd);
}
static int
contract_latest(ctid_t *id) {
int cfd = 0;
int r = 0;
ct_stathdl_t st = {0};
ctid_t result = {0};
if ((cfd = open(CTFS_ROOT "/process/latest", O_RDONLY)) == -1)
return (errno);
if ((r = ct_status_read(cfd, CTD_COMMON, &st)) != 0) {
(void) close(cfd);
return (r);
}
result = ct_status_get_id(st);
ct_status_free(st);
(void) close(cfd);
*id = result;
return (0);
}
