static int
dt_pid_mod_filt(void *arg, const prmap_t *pmp, const char *obj)
{
char name[DTRACE_MODNAMELEN];
dt_pid_probe_t *pp = arg;
if (gmatch(obj, pp->dpp_mod))
return (dt_pid_per_mod(pp, pmp, obj));
#if defined(sun)
(void) Plmid(pp->dpp_pr, pmp->pr_vaddr, &pp->dpp_lmid);
#else
pp->dpp_lmid = 0;
#endif
if ((pp->dpp_obj = strrchr(obj, '/')) == NULL)
pp->dpp_obj = obj;
else
pp->dpp_obj++;
if (gmatch(pp->dpp_obj, pp->dpp_mod))
return (dt_pid_per_mod(pp, pmp, obj));
#if defined(sun)
(void) Plmid(pp->dpp_pr, pmp->pr_vaddr, &pp->dpp_lmid);
#endif
dt_pid_objname(name, sizeof (name), pp->dpp_lmid, pp->dpp_obj);
if (gmatch(name, pp->dpp_mod))
return (dt_pid_per_mod(pp, pmp, obj));
return (0);
}
static int
dt_pid_usdt_mapping(void *data, const prmap_t *pmp, const char *oname)
{
struct ps_prochandle *P = data;
GElf_Sym sym;
prsyminfo_t sip;
dof_helper_t dh;
GElf_Half e_type;
const char *mname;
const char *syms[] = { "___SUNW_dof", "__SUNW_dof" };
int i, fd = -1;
/*
* The symbol ___SUNW_dof is for lazy-loaded DOF sections, and
* __SUNW_dof is for actively-loaded DOF sections. We try to force
* in both types of DOF section since the process may not yet have
* run the code to instantiate these providers.
*/
for (i = 0; i < 2; i++) {
if (Pxlookup_by_name(P, PR_LMID_EVERY, oname, syms[i], &sym,
&sip) != 0) {
continue;
}
if ((mname = strrchr(oname, '/')) == NULL)
mname = oname;
else
mname++;
dt_dprintf("lookup of %s succeeded for %s\n", syms[i], mname);
if (Pread(P, &e_type, sizeof (e_type), pmp->pr_vaddr +
offsetof(Elf64_Ehdr, e_type)) != sizeof (e_type)) {
dt_dprintf("read of ELF header failed");
continue;
}
dh.dofhp_dof = sym.st_value;
dh.dofhp_addr = (e_type == ET_EXEC) ? 0 : pmp->pr_vaddr;
dt_pid_objname(dh.dofhp_mod, sizeof (dh.dofhp_mod),
sip.prs_lmid, mname);
if (fd == -1 &&
(fd = pr_open(P, "/dev/dtrace/helper", O_RDWR, 0)) < 0) {
dt_dprintf("pr_open of helper device failed: %s\n",
strerror(errno));
return (-1); /* errno is set for us */
}
if (pr_ioctl(P, fd, DTRACEHIOC_ADDDOF, &dh, sizeof (dh)) < 0)
dt_dprintf("DOF was rejected for %s\n", dh.dofhp_mod);
}
if (fd != -1)
(void) pr_close(P, fd);
return (0);
}
static const prmap_t *
dt_pid_fix_mod(dtrace_probedesc_t *pdp, struct ps_prochandle *P)
{
char m[MAXPATHLEN];
#if defined(sun)
Lmid_t lmid = PR_LMID_EVERY;
#else
Lmid_t lmid = 0;
#endif
const char *obj;
const prmap_t *pmp;
#if defined(sun)
/*
* Pick apart the link map from the library name.
*/
if (strchr(pdp->dtpd_mod, '`') != NULL) {
char *end;
if (strncmp(pdp->dtpd_mod, "LM", 2) != 0 ||
!isdigit(pdp->dtpd_mod[2]))
return (NULL);
lmid = strtoul(&pdp->dtpd_mod[2], &end, 16);
obj = end + 1;
if (*end != '`' || strchr(obj, '`') != NULL)
return (NULL);
} else {
obj = pdp->dtpd_mod;
}
#else
obj = pdp->dtpd_mod;
#endif
if ((pmp = Plmid_to_map(P, lmid, obj)) == NULL)
return (NULL);
#if defined(sun)
(void) Pobjname(P, pmp->pr_vaddr, m, sizeof (m));
if ((obj = strrchr(m, '/')) == NULL)
obj = &m[0];
else
obj++;
(void) Plmid(P, pmp->pr_vaddr, &lmid);
#endif
dt_pid_objname(pdp->dtpd_mod, sizeof (pdp->dtpd_mod), lmid, obj);
return (pmp);
}
static int
dt_pid_per_sym(dt_pid_probe_t *pp, const GElf_Sym *symp, const char *func)
{
dtrace_hdl_t *dtp = pp->dpp_dtp;
dt_pcb_t *pcb = pp->dpp_pcb;
dt_proc_t *dpr = pp->dpp_dpr;
fasttrap_probe_spec_t *ftp;
uint64_t off;
char *end;
uint_t nmatches = 0;
ulong_t sz;
int glob, err;
int isdash = strcmp("-", func) == 0;
pid_t pid;
#if defined(sun)
pid = Pstatus(pp->dpp_pr)->pr_pid;
#else
pid = proc_getpid(pp->dpp_pr);
#endif
dt_dprintf("creating probe pid%d:%s:%s:%s\n", (int)pid, pp->dpp_obj,
func, pp->dpp_name);
sz = sizeof (fasttrap_probe_spec_t) + (isdash ? 4 :
(symp->st_size - 1) * sizeof (ftp->ftps_offs[0]));
if ((ftp = dt_alloc(dtp, sz)) == NULL) {
dt_dprintf("proc_per_sym: dt_alloc(%lu) failed\n", sz);
return (1); /* errno is set for us */
}
ftp->ftps_pid = pid;
(void) strncpy(ftp->ftps_func, func, sizeof (ftp->ftps_func));
dt_pid_objname(ftp->ftps_mod, sizeof (ftp->ftps_mod), pp->dpp_lmid,
pp->dpp_obj);
if (!isdash && gmatch("return", pp->dpp_name)) {
if (dt_pid_create_return_probe(pp->dpp_pr, dtp, ftp, symp,
pp->dpp_stret) < 0) {
return (dt_pid_error(dtp, pcb, dpr, ftp,
D_PROC_CREATEFAIL, "failed to create return probe "
"for '%s': %s", func,
dtrace_errmsg(dtp, dtrace_errno(dtp))));
}
nmatches++;
}
if (!isdash && gmatch("entry", pp->dpp_name)) {
if (dt_pid_create_entry_probe(pp->dpp_pr, dtp, ftp, symp) < 0) {
return (dt_pid_error(dtp, pcb, dpr, ftp,
D_PROC_CREATEFAIL, "failed to create entry probe "
"for '%s': %s", func,
dtrace_errmsg(dtp, dtrace_errno(dtp))));
}
nmatches++;
}
glob = strisglob(pp->dpp_name);
if (!glob && nmatches == 0) {
off = strtoull(pp->dpp_name, &end, 16);
if (*end != '\0') {
return (dt_pid_error(dtp, pcb, dpr, ftp, D_PROC_NAME,
"'%s' is an invalid probe name", pp->dpp_name));
}
if (off >= symp->st_size) {
return (dt_pid_error(dtp, pcb, dpr, ftp, D_PROC_OFF,
"offset 0x%llx outside of function '%s'",
(u_longlong_t)off, func));
}
err = dt_pid_create_offset_probe(pp->dpp_pr, pp->dpp_dtp, ftp,
symp, off);
if (err == DT_PROC_ERR) {
return (dt_pid_error(dtp, pcb, dpr, ftp,
D_PROC_CREATEFAIL, "failed to create probe at "
"'%s+0x%llx': %s", func, (u_longlong_t)off,
dtrace_errmsg(dtp, dtrace_errno(dtp))));
}
if (err == DT_PROC_ALIGN) {
return (dt_pid_error(dtp, pcb, dpr, ftp, D_PROC_ALIGN,
"offset 0x%llx is not aligned on an instruction",
(u_longlong_t)off));
}
nmatches++;
} else if (glob && !isdash) {
if (dt_pid_create_glob_offset_probes(pp->dpp_pr,
pp->dpp_dtp, ftp, symp, pp->dpp_name) < 0) {
return (dt_pid_error(dtp, pcb, dpr, ftp,
D_PROC_CREATEFAIL,
"failed to create offset probes in '%s': %s", func,
dtrace_errmsg(dtp, dtrace_errno(dtp))));
}
nmatches++;
}
pp->dpp_nmatches += nmatches;
dt_free(dtp, ftp);
return (0);
}
static int
dt_pid_usdt_mapping(void *data, const prmap_t *pmp, const char *oname)
{
struct ps_prochandle *P = data;
GElf_Sym sym;
#if defined(sun)
prsyminfo_t sip;
GElf_Half e_type;
#endif
dof_helper_t dh;
const char *mname;
const char *syms[] = { "___SUNW_dof", "__SUNW_dof" };
int i;
#if defined(windows)
HANDLE fd = NULL;
DWORD ret, gen;
#endif
#if !defined(sun)
dof_hdr_t hdr;
#endif
/*
* The symbol ___SUNW_dof is for lazy-loaded DOF sections, and
* __SUNW_dof is for actively-loaded DOF sections. We try to force
* in both types of DOF section since the process may not yet have
* run the code to instantiate these providers.
*/
for (i = 0; i < 2; i++) {
if (Pxlookup_by_name(P, PR_LMID_EVERY, oname, syms[i], &sym,
NULL) != 0) {
continue;
}
if ((mname = strrchr(oname, '/')) == NULL)
mname = oname;
else
mname++;
dt_dprintf("lookup of %s succeeded for %s\n", syms[i], mname);
#if 0
if (Pread(P, &e_type, sizeof (e_type), pmp->pr_vaddr +
offsetof(Elf64_Ehdr, e_type)) != sizeof (e_type)) {
dt_dprintf("read of ELF header failed");
continue;
}
dh.dofhp_dof = sym.st_value;
dh.dofhp_addr = (e_type == ET_EXEC) ? 0 : pmp->pr_vaddr;
#endif
#if !defined(sun)
dh.dofhp_addr = 0;
dh.dofhp_dof = (uintptr_t) sym.st_value;;
dh.dofhp_pid = Ppid(P);
dt_pid_objname(dh.dofhp_mod, sizeof (dh.dofhp_mod),
0, mname);
if (fd == NULL &&
(fd = CreateFile("\\\\.\\DtraceHelper", GENERIC_READ | GENERIC_WRITE,
0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) == NULL) {
dt_dprintf("open of helper device failed: %s\n",
strerror(errno));
return (-1); /* errno is set for us */
}
if ((DeviceIoControl(fd, DTRACEHIOC_ADDDOF, &dh, 0, &gen, 0, &ret, NULL)) == 0)
dt_dprintf("DOF was rejected for %s\n", dh.dofhp_mod);
else
dt_dprintf("DOF was success for %s\n", dh.dofhp_mod);
#else
dt_pid_objname(dh.dofhp_mod, sizeof (dh.dofhp_mod), sip.prs_lmid, mname);
if (fd == -1 &&
(fd = pr_open(P, "/dev/dtrace/helper", O_RDWR, 0)) < 0) {
dt_dprintf("pr_open of helper device failed: %s\n",
strerror(errno));
return (-1); /* errno is set for us */
}
if (pr_ioctl(P, fd, DTRACEHIOC_ADDDOF, &dh, sizeof (dh)) < 0)
dt_dprintf("DOF was rejected for %s\n", dh.dofhp_mod);
#endif
}
#if defined(sun)
if (fd != -1)
(void) pr_close(P, fd);
#else
if (fd != 0)
CloseHandle(fd);
#endif
return (0);
}
