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Code Issues Releases Activity

Ensure that all eight syscall arguments are available to dtrace_probe(),

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rather than just the first five. This is done by calling dtrace_probe()
through a function pointer, as in illumos.

MFC after:	3 weeks
This commit is contained in:
Mark Johnston 2014-04-14 00:23:18 +00:00
parent 0626f3e435
commit 38e6967f04
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=264435
1 changed files with 7 additions and 1 deletions
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8
sys/cddl/dev/systrace/systrace.c
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@ -168,6 +168,9 @@ static dtrace_pops_t systrace_pops = {
static struct cdev *systrace_cdev; static struct cdev *systrace_cdev;
static dtrace_provider_id_t systrace_id; static dtrace_provider_id_t systrace_id;
typedef void (*systrace_dtrace_probe_t)(dtrace_id_t, uintptr_t, uintptr_t,
uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
#if !defined(LINUX_SYSTRACE) #if !defined(LINUX_SYSTRACE)
/* /*
* Probe callback function. * Probe callback function.
@ -180,6 +183,7 @@ static void
systrace_probe(u_int32_t id, int sysnum, struct sysent *sysent, void *params, systrace_probe(u_int32_t id, int sysnum, struct sysent *sysent, void *params,
int ret) int ret)
{ {
systrace_dtrace_probe_t probe;
int n_args = 0; int n_args = 0;
u_int64_t uargs[8]; u_int64_t uargs[8];
@ -211,7 +215,9 @@ systrace_probe(u_int32_t id, int sysnum, struct sysent *sysent, void *params,
} }
/* Process the probe using the converted argments. */ /* Process the probe using the converted argments. */
dtrace_probe(id, uargs[0], uargs[1], uargs[2], uargs[3], uargs[4]); probe = (systrace_dtrace_probe_t)dtrace_probe;
probe(id, uargs[0], uargs[1], uargs[2], uargs[3], uargs[4], uargs[5],
uargs[6], uargs[7]);
} }
#endif #endif