PSTAT Interfaces

10
psfd_lo_nodeid are unique ids representing the opened file. These ids together are used to match
the corresponding ids returned from the pstat_getfile2(). This call does not work for sockets
other than AF_UNIX family type.
Return Value:
This call returns –1 on failure or 1 on success.
Errors:
• EFAULT is set if buf or fid points to invalid address.
• ENOENT is set if the specified file is not found or closed.
• EINVAL is set if the user’s size declaration is invalid.
• EINVAL is set if the fid corresponds to a socket other than AF_UNIX family.
• ESRCH is the specified process is not found.
• EACESS is set if there is no effective UID match.
• EOVERFLOW is set if a value to be stored overflows one of the members of the pst_filedetails
structure. The psfd_valid member indicates the field that overflowed.
Example:
#include <sys/pstat.h>
void main(void)
{
struct pst_fileinfo2 psf;
struct pst_filedetails psfdetails;
int count, fd;
fd = open("/stand/vmunix", O_RDONLY);
count = pstat_getfile2(&psf, sizeof(psf), 0, fd, getpid());
if (count == 1) {
count = pstat_getfiledetails(&psfdetails,
sizeof(psfdetails),
&psf.psf_fid);
if (count == 1) {
if ((psfdetails.psfd_hi_fileid == psf.psf_hi_fileid)&&
(psfdetails.psfd_lo_fileid == psf.psf_lo_fileid)&&
(psfdetails.psfd_hi_nodeid == psf.psf_hi_nodeid)&&
(psfdetails.psfd_lo_nodeid == psf.psf_lo_nodeid)){
printf("Success\n");
} else {
printf("State changed\n");
}
} else {
perror("pstat_getfiledetails()");
}
} else {
perror("pstat_getfile2");
}
close(fd);
}
4.8 pstat_getipc()
Synopsis:
int pstat_getipc(struct pst_ipcinfo *buf, size_t elemsize, size_t elemcount, int index);
Description: