| Rev | Line | |
|---|
| [9] | 1 | /* sysconf.c POSIX 4.8.1
|
|---|
| 2 | * long int sysconf(int name);
|
|---|
| 3 | *
|
|---|
| 4 | * POSIX allows some of the values in <limits.h> to be increased at
|
|---|
| 5 | * run time. The sysconf() function allows such values to be checked
|
|---|
| 6 | * at run time. MINIX does not use this facility - the run time
|
|---|
| 7 | * limits are those given in <limits.h>.
|
|---|
| 8 | */
|
|---|
| 9 |
|
|---|
| 10 | #include <lib.h>
|
|---|
| 11 | #include <unistd.h>
|
|---|
| 12 | #include <time.h>
|
|---|
| 13 |
|
|---|
| 14 | PUBLIC long int sysconf(name)
|
|---|
| 15 | int name; /* property being inspected */
|
|---|
| 16 | {
|
|---|
| 17 | switch(name) {
|
|---|
| 18 | case _SC_ARG_MAX:
|
|---|
| 19 | return (long) ARG_MAX;
|
|---|
| 20 |
|
|---|
| 21 | case _SC_CHILD_MAX:
|
|---|
| 22 | return (long) CHILD_MAX;
|
|---|
| 23 |
|
|---|
| 24 | case _SC_CLK_TCK:
|
|---|
| 25 | return (long) CLOCKS_PER_SEC;
|
|---|
| 26 |
|
|---|
| 27 | case _SC_NGROUPS_MAX:
|
|---|
| 28 | return (long) NGROUPS_MAX;
|
|---|
| 29 |
|
|---|
| 30 | case _SC_OPEN_MAX:
|
|---|
| 31 | return (long) OPEN_MAX;
|
|---|
| 32 |
|
|---|
| 33 | case _SC_JOB_CONTROL:
|
|---|
| 34 | return -1L; /* no job control */
|
|---|
| 35 |
|
|---|
| 36 | case _SC_SAVED_IDS:
|
|---|
| 37 | return -1L; /* no saved uid/gid */
|
|---|
| 38 |
|
|---|
| 39 | case _SC_VERSION:
|
|---|
| 40 | return (long) _POSIX_VERSION;
|
|---|
| 41 |
|
|---|
| 42 | case _SC_STREAM_MAX:
|
|---|
| 43 | return (long) STREAM_MAX;
|
|---|
| 44 |
|
|---|
| 45 | case _SC_TZNAME_MAX:
|
|---|
| 46 | return (long) TZNAME_MAX;
|
|---|
| 47 |
|
|---|
| 48 | case _SC_PAGESIZE:
|
|---|
| 49 | return getpagesize();
|
|---|
| 50 |
|
|---|
| 51 | default:
|
|---|
| 52 | errno = EINVAL;
|
|---|
| 53 | return -1L;
|
|---|
| 54 | }
|
|---|
| 55 | }
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
