Return an indication of all hooks currently being traced.
libtrace.a
#include <sys/libtrace.h>
int trc_ishookset(int chan, char *hkst, size_t hkst_sz)The trc_ishookset subroutine returns 1 if the specified channel is being traced, 0 otherwise. If it returns 1, the hookset item is modified to contain an indication of the hooks being traced. The facilities in the libtrace.a library for examining a data item of trc_hookset_t or trc_hookset64_t type can then be used.
If data of the trc_hookset_t type is passed on a system before AIX® 6.1, the status of all 12-bit hook IDs are returned. If data of the trc_hookset_t type is passed on AIX 6.1 and later, only information about the hooks of the form 0xhhh0 (represented as 0xhhh) is returned where h is a hexadecimal digit. If data of the trc_hookset64_t type, which is valid beginning with AIX 6.1, is passed, information about all 16-bit hook IDs is returned.
| Item | Description |
|---|---|
| chan | The channel to query ranging from channel number 0 through 7. |
| hkst | Pointer to a variable of type trc_hookset_t or trc_hookset64_t. |
| hkst_sz | Size of the hookset being passed in. |
| Item | Description |
|---|---|
| 1 | System trace is on. |
| 0 | System trace is off. |
/dev/systrct1[-{0-7}]