#include "defs.h"
+#include <stdint.h>
#include <signal.h>
#include <sys/user.h>
#include <fcntl.h>
# include <asm/ptrace_offsets.h>
#endif /* !IA64 */
-#if HAVE_ASM_REG_H
-# if defined (SPARC) || defined (SPARC64)
-# define fpq kernel_fpq
-# define fq kernel_fq
-# define fpu kernel_fpu
-# endif
-# include <asm/reg.h>
-# if defined (SPARC) || defined (SPARC64)
-# undef fpq
-# undef fq
-# undef fpu
-# endif
#if defined (LINUX) && defined (SPARC64)
-# define r_pc r_tpc
# undef PTRACE_GETREGS
# define PTRACE_GETREGS PTRACE_GETREGS64
# undef PTRACE_SETREGS
# define PTRACE_SETREGS PTRACE_SETREGS64
#endif /* LINUX && SPARC64 */
-#endif /* HAVE_ASM_REG_H */
-#if defined (SPARC) || defined (SPARC64)
+#if defined (SPARC) || defined (SPARC64) || defined (MIPS)
typedef struct {
- struct regs si_regs;
+ struct pt_regs si_regs;
int si_mask;
} m_siginfo_t;
#elif defined HAVE_ASM_SIGCONTEXT_H
#include <asm/sigcontext.h>
#endif /* !IA64 && !X86_64 */
#else /* !HAVE_ASM_SIGCONTEXT_H */
-#ifdef I386
+#if defined I386 && !defined HAVE_STRUCT_SIGCONTEXT_STRUCT
struct sigcontext_struct {
unsigned short gs, __gsh;
unsigned short fs, __fsh;
unsigned long cr2;
};
#else /* !I386 */
-#ifdef M68K
+#if defined M68K && !defined HAVE_STRUCT_SIGCONTEXT
struct sigcontext
{
unsigned long sc_mask;
#ifdef SA_INTERRUPT
{ SA_INTERRUPT, "SA_INTERRUPT" },
#endif
-#ifdef SA_NOMASK
+#ifdef SA_NODEFER
+ { SA_NODEFER, "SA_NODEFER" },
+#endif
+#if defined SA_NOMASK && SA_NODEFER != SA_NOMASK
{ SA_NOMASK, "SA_NOMASK" },
#endif
-#ifdef SA_ONESHOT
+#ifdef SA_RESETHAND
+ { SA_RESETHAND, "SA_RESETHAND" },
+#endif
+#if defined SA_ONESHOT && SA_ONESHOT != SA_RESETHAND
{ SA_ONESHOT, "SA_ONESHOT" },
#endif
#ifdef SA_SIGINFO
#endif
#ifdef _SA_BSDCALL
{ _SA_BSDCALL, "_SA_BSDCALL" },
+#endif
+#ifdef SA_NOPTRACE
+ { SA_NOPTRACE, "SA_NOPTRACE" },
#endif
{ 0, NULL },
};
#define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(sigset_t))
#endif
-static char *
-sprintsigmask(s, mask, rt)
-char *s;
-sigset_t *mask;
-int rt; /* set might include realtime sigs */
+static const char *
+sprintsigmask(const char *str, sigset_t *mask, int rt)
+/* set might include realtime sigs */
{
int i, nsigs;
int maxsigs;
- char *format;
+ const char *format;
+ char *s;
static char outstr[8 * sizeof(sigset_t) * 8];
- strcpy(outstr, s);
+ strcpy(outstr, str);
s = outstr + strlen(outstr);
nsigs = 0;
maxsigs = nsignals;
printsignal(nr)
int nr;
{
- tprintf(signame(nr));
+ tprintf("%s", signame(nr));
}
void
#ifdef LINUX
static void
-parse_sigset_t (const char *str, sigset_t *set)
+parse_sigset_t(const char *str, sigset_t *set)
{
const char *p;
unsigned int digit;
int sfd;
char sname[32];
char buf[2048];
- char *s;
+ const char *s;
int i;
sigset_t ignored, caught;
#endif
#ifdef SUNOS4
void (*u_signal)();
- if (upeek(tcp->pid, uoff(u_signal[0]) + sig*sizeof(u_signal),
+ if (upeek(tcp, uoff(u_signal[0]) + sig*sizeof(u_signal),
(long *) &u_signal) < 0) {
return 0;
}
return 0;
}
+#if defined(SUNOS4) || defined(FREEBSD)
int
sys_sigblock(tcp)
struct tcb *tcp;
{
return sys_sigsetmask(tcp);
}
+#endif /* SUNOS4 || FREEBSD */
#endif /* !SVR4 */
else if (umove(tcp, addr, &sa) < 0)
tprintf("{...}");
else {
- switch ((long) sa.SA_HANDLER) {
- case (long) SIG_ERR:
- tprintf("{SIG_ERR}");
- break;
- case (long) SIG_DFL:
- tprintf("{SIG_DFL}");
- break;
- case (long) SIG_IGN:
+ /* Architectures using function pointers, like
+ * hppa, may need to manipulate the function pointer
+ * to compute the result of a comparison. However,
+ * the SA_HANDLER function pointer exists only in
+ * the address space of the traced process, and can't
+ * be manipulated by strace. In order to prevent the
+ * compiler from generating code to manipulate
+ * SA_HANDLER we cast the function pointers to long. */
+ if ((long)sa.SA_HANDLER == (long)SIG_ERR)
+ tprintf("{SIG_ERR, ");
+ else if ((long)sa.SA_HANDLER == (long)SIG_DFL)
+ tprintf("{SIG_DFL, ");
+ else if ((long)sa.SA_HANDLER == (long)SIG_IGN) {
#ifndef USE_PROCFS
if (tcp->u_arg[0] == SIGTRAP) {
tcp->flags |= TCB_SIGTRAPPED;
kill(tcp->pid, SIGSTOP);
}
#endif /* !USE_PROCFS */
- tprintf("{SIG_IGN}");
- break;
- default:
+ tprintf("{SIG_IGN, ");
+ }
+ else {
#ifndef USE_PROCFS
if (tcp->u_arg[0] == SIGTRAP) {
tcp->flags |= TCB_SIGTRAPPED;
printsignal(tcp->u_arg[0]);
tprintf(", ");
switch (tcp->u_arg[1]) {
- case (int) SIG_ERR:
+ case (long) SIG_ERR:
tprintf("SIG_ERR");
break;
- case (int) SIG_DFL:
+ case (long) SIG_DFL:
tprintf("SIG_DFL");
break;
- case (int) SIG_IGN:
+ case (long) SIG_IGN:
#ifndef USE_PROCFS
if (tcp->u_arg[0] == SIGTRAP) {
tcp->flags |= TCB_SIGTRAPPED;
}
return 0;
}
- else {
+ else if (!syserror(tcp)) {
switch (tcp->u_rval) {
- case (int) SIG_ERR:
+ case (long) SIG_ERR:
tcp->auxstr = "SIG_ERR"; break;
- case (int) SIG_DFL:
+ case (long) SIG_DFL:
tcp->auxstr = "SIG_DFL"; break;
- case (int) SIG_IGN:
+ case (long) SIG_IGN:
tcp->auxstr = "SIG_IGN"; break;
default:
tcp->auxstr = NULL;
}
return RVAL_HEX | RVAL_STR;
}
+ return 0;
}
+#ifdef SVR4
int
sys_sighold(tcp)
struct tcb *tcp;
}
return 0;
}
+#endif /* SVR4 */
#endif /* HAVE_SIGACTION */
#ifdef LINUX
int
-sys_sigreturn(tcp)
-struct tcb *tcp;
+sys_sigreturn(struct tcb *tcp)
{
-#ifdef ARM
+#if defined(ARM)
struct pt_regs regs;
struct sigcontext_struct sc;
if (entering(tcp)) {
tcp->u_arg[0] = 0;
- if (upeek(tcp->pid,PT_GPR15,&usp)<0)
+ if (upeek(tcp,PT_GPR15,&usp)<0)
return 0;
if (umove(tcp, usp+__SIGNAL_FRAMESIZE, &sc) < 0)
return 0;
return RVAL_NONE | RVAL_STR;
}
return 0;
-#else
-#ifdef I386
+#elif defined(I386)
long esp;
struct sigcontext_struct sc;
if (entering(tcp)) {
tcp->u_arg[0] = 0;
- if (upeek(tcp->pid, 4*UESP, &esp) < 0)
+ if (upeek(tcp, 4*UESP, &esp) < 0)
return 0;
if (umove(tcp, esp, &sc) < 0)
return 0;
return RVAL_NONE | RVAL_STR;
}
return 0;
-#else /* !I386 */
-#ifdef IA64
+#elif defined(IA64)
struct sigcontext sc;
long sp;
/* offset of sigcontext in the kernel's sigframe structure: */
# define SIGFRAME_SC_OFFSET 0x90
tcp->u_arg[0] = 0;
- if (upeek(tcp->pid, PT_R12, &sp) < 0)
+ if (upeek(tcp, PT_R12, &sp) < 0)
return 0;
if (umove(tcp, sp + 16 + SIGFRAME_SC_OFFSET, &sc) < 0)
return 0;
return RVAL_NONE | RVAL_STR;
}
return 0;
-#else /* !IA64 */
-#ifdef POWERPC
+#elif defined(POWERPC)
long esp;
struct sigcontext_struct sc;
if (entering(tcp)) {
tcp->u_arg[0] = 0;
- if (upeek(tcp->pid, sizeof(unsigned long)*PT_R1, &esp) < 0)
+ if (upeek(tcp, sizeof(unsigned long)*PT_R1, &esp) < 0)
return 0;
+ /* Skip dummy stack frame. */
+#ifdef POWERPC64
+ if (current_personality == 0)
+ esp += 128;
+ else
+ esp += 64;
+#else
+ esp += 64;
+#endif
if (umove(tcp, esp, &sc) < 0)
return 0;
tcp->u_arg[0] = 1;
return RVAL_NONE | RVAL_STR;
}
return 0;
-#else /* !POWERPC */
-#ifdef M68K
+#elif defined(M68K)
long usp;
struct sigcontext sc;
if (entering(tcp)) {
tcp->u_arg[0] = 0;
- if (upeek(tcp->pid, 4*PT_USP, &usp) < 0)
+ if (upeek(tcp, 4*PT_USP, &usp) < 0)
return 0;
if (umove(tcp, usp, &sc) < 0)
return 0;
return RVAL_NONE | RVAL_STR;
}
return 0;
-#else /* !M68K */
-#ifdef ALPHA
+#elif defined(ALPHA)
long fp;
struct sigcontext_struct sc;
if (entering(tcp)) {
tcp->u_arg[0] = 0;
- if (upeek(tcp->pid, REG_FP, &fp) < 0)
+ if (upeek(tcp, REG_FP, &fp) < 0)
return 0;
if (umove(tcp, fp, &sc) < 0)
return 0;
return RVAL_NONE | RVAL_STR;
}
return 0;
-#else
-#if defined (SPARC) || defined (SPARC64)
+#elif defined (SPARC) || defined (SPARC64)
long i1;
- struct regs regs;
+ struct pt_regs regs;
m_siginfo_t si;
if(ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) {
}
if(entering(tcp)) {
tcp->u_arg[0] = 0;
- i1 = regs.r_o1;
+ i1 = regs.u_regs[U_REG_O1];
if(umove(tcp, i1, &si) < 0) {
perror("sigreturn: umove ");
return 0;
return RVAL_NONE | RVAL_STR;
}
return 0;
-#else
-#ifdef MIPS
+#elif defined (LINUX_MIPSN32) || defined (LINUX_MIPSN64)
+ /* This decodes rt_sigreturn. The 64-bit ABIs do not have
+ sigreturn. */
long sp;
- struct sigcontext sc;
+ struct ucontext uc;
if(entering(tcp)) {
- tcp->u_arg[0] = 0;
- if (upeek(tcp->pid, REG_SP, &sp) < 0)
- return 0;
- if (umove(tcp, sp, &sc) < 0)
- return 0;
+ tcp->u_arg[0] = 0;
+ if (upeek(tcp, REG_SP, &sp) < 0)
+ return 0;
+ /* There are six words followed by a 128-byte siginfo. */
+ sp = sp + 6 * 4 + 128;
+ if (umove(tcp, sp, &uc) < 0)
+ return 0;
+ tcp->u_arg[0] = 1;
+ tcp->u_arg[1] = *(long *) &uc.uc_sigmask;
+ } else {
+ sigset_t sigm;
+ long_to_sigset(tcp->u_arg[1], &sigm);
+ tcp->u_rval = tcp->u_error = 0;
+ if(tcp->u_arg[0] == 0)
+ return 0;
+ tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
+ return RVAL_NONE | RVAL_STR;
+ }
+ return 0;
+#elif defined(MIPS)
+ long sp;
+ struct pt_regs regs;
+ m_siginfo_t si;
+
+ if(ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) {
+ perror("sigreturn: PTRACE_GETREGS ");
+ return 0;
+ }
+ if(entering(tcp)) {
+ tcp->u_arg[0] = 0;
+ sp = regs.regs[29];
+ if (umove(tcp, sp, &si) < 0)
tcp->u_arg[0] = 1;
- tcp->u_arg[1] = sc.sc_sigset;
+ tcp->u_arg[1] = si.si_mask;
} else {
- tcp->u_rval = tcp->u_error = 0;
+ sigset_t sigm;
+ long_to_sigset(tcp->u_arg[1], &sigm);
+ tcp->u_rval = tcp->u_error = 0;
if(tcp->u_arg[0] == 0)
- return 0;
- tcp->auxstr = sprintsigmask("mask now ", tcp->u_arg[1]);
+ return 0;
+ tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
+ return RVAL_NONE | RVAL_STR;
+ }
+ return 0;
+#elif defined(CRISV10) || defined(CRISV32)
+ struct sigcontext sc;
+
+ if (entering(tcp)) {
+ long regs[PT_MAX+1];
+
+ tcp->u_arg[0] = 0;
+
+ if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long)regs) < 0) {
+ perror("sigreturn: PTRACE_GETREGS");
+ return 0;
+ }
+ if (umove(tcp, regs[PT_USP], &sc) < 0)
+ return 0;
+ tcp->u_arg[0] = 1;
+ tcp->u_arg[1] = sc.oldmask;
+ } else {
+ sigset_t sigm;
+ long_to_sigset(tcp->u_arg[1], &sigm);
+ tcp->u_rval = tcp->u_error = 0;
+
+ if (tcp->u_arg[0] == 0)
+ return 0;
+ tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
+ return RVAL_NONE | RVAL_STR;
+ }
+ return 0;
+#elif defined(TILE)
+ struct ucontext uc;
+ long sp;
+
+ /* offset of ucontext in the kernel's sigframe structure */
+# define SIGFRAME_UC_OFFSET C_ABI_SAVE_AREA_SIZE + sizeof(struct siginfo)
+
+ if (entering(tcp)) {
+ tcp->u_arg[0] = 0;
+ if (upeek(tcp, PTREGS_OFFSET_SP, &sp) < 0)
+ return 0;
+ if (umove(tcp, sp + SIGFRAME_UC_OFFSET, &uc) < 0)
+ return 0;
+ tcp->u_arg[0] = 1;
+ memcpy(tcp->u_arg + 1, &uc.uc_sigmask, sizeof(uc.uc_sigmask));
+ }
+ else {
+ sigset_t sigm;
+
+ memcpy(&sigm, tcp->u_arg + 1, sizeof (sigm));
+ tcp->u_rval = tcp->u_error = 0;
+ if (tcp->u_arg[0] == 0)
+ return 0;
+ tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
+ return RVAL_NONE | RVAL_STR;
+ }
+ return 0;
+#elif defined(MICROBLAZE)
+ struct sigcontext sc;
+
+ /* TODO: Verify that this is correct... */
+ if (entering(tcp)) {
+ long sp;
+
+ tcp->u_arg[0] = 0;
+
+ /* Read r1, the stack pointer. */
+ if (upeek(tcp, 1 * 4, &sp) < 0)
+ return 0;
+ if (umove(tcp, sp, &sc) < 0)
+ return 0;
+ tcp->u_arg[0] = 1;
+ tcp->u_arg[1] = sc.oldmask;
+ } else {
+ sigset_t sigm;
+ long_to_sigset(tcp->u_arg[1], &sigm);
+ tcp->u_rval = tcp->u_error = 0;
+ if (tcp->u_arg[0] == 0)
+ return 0;
+ tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
return RVAL_NONE | RVAL_STR;
}
return 0;
#warning No sys_sigreturn() for this architecture
#warning (no problem, just a reminder :-)
return 0;
-#endif /* MIPS */
-#endif /* SPARC || SPARC64 */
-#endif /* ALPHA */
-#endif /* !M68K */
-#endif /* !POWERPC */
-#endif /* !IA64 */
-#endif /* !I386 */
-#endif /* S390 */
+#endif
}
int
}
int
-sys_sigsuspend(tcp)
-struct tcb *tcp;
+sys_sigsuspend(struct tcb *tcp)
{
if (entering(tcp)) {
sigset_t sigm;
long_to_sigset(tcp->u_arg[2], &sigm);
-#if 0
- /* first two are not really arguments, but print them anyway */
- /* nevermind, they are an anachronism now, too bad... */
- tprintf("%d, %#x, ", tcp->u_arg[0], tcp->u_arg[1]);
-#endif
printsigmask(&sigm, 0);
}
return 0;
struct tcb *tcp;
{
if (entering(tcp)) {
- tprintf("%ld, %s", tcp->u_arg[0], signame(tcp->u_arg[1]));
+ /*
+ * Sign-extend a 32-bit value when that's what it is.
+ */
+ long pid = tcp->u_arg[0];
+ if (personality_wordsize[current_personality] < sizeof pid)
+ pid = (long) (int) pid;
+ tprintf("%ld, %s", pid, signame(tcp->u_arg[1]));
}
return 0;
}
+#if defined(FREEBSD) || defined(SUNOS4)
int
sys_killpg(tcp)
struct tcb *tcp;
{
return sys_kill(tcp);
}
+#endif /* FREEBSD || SUNOS4 */
#ifdef LINUX
int
return 0;
}
+#ifdef SVR4
int sys_sigwait(tcp)
struct tcb *tcp;
{
}
return 0;
}
+#endif /* SVR4 */
#ifdef LINUX
/* Structure describing the action to be taken when a signal arrives. */
struct new_sigaction
{
- union
- {
- __sighandler_t __sa_handler;
- void (*__sa_sigaction) (int, siginfo_t *, void *);
- }
- __sigaction_handler;
+ __sighandler_t __sa_handler;
unsigned long sa_flags;
void (*sa_restorer) (void);
- unsigned long int sa_mask[2];
+ /* Kernel treats sa_mask as an array of longs. */
+ unsigned long sa_mask[NSIG / sizeof(long) ? NSIG / sizeof(long) : 1];
+};
+/* Same for i386-on-x86_64 and similar cases */
+struct new_sigaction32
+{
+ uint32_t __sa_handler;
+ uint32_t sa_flags;
+ uint32_t sa_restorer;
+ uint32_t sa_mask[2 * (NSIG / sizeof(long) ? NSIG / sizeof(long) : 1)];
};
- int
-sys_rt_sigaction(tcp)
- struct tcb *tcp;
+int
+sys_rt_sigaction(struct tcb *tcp)
{
struct new_sigaction sa;
sigset_t sigset;
long addr;
+ int r;
if (entering(tcp)) {
printsignal(tcp->u_arg[0]);
addr = tcp->u_arg[1];
} else
addr = tcp->u_arg[2];
- if (addr == 0)
+
+ if (addr == 0) {
tprintf("NULL");
- else if (!verbose(tcp))
+ goto after_sa;
+ }
+ if (!verbose(tcp)) {
tprintf("%#lx", addr);
- else if (umove(tcp, addr, &sa) < 0)
+ goto after_sa;
+ }
+#if SUPPORTED_PERSONALITIES > 1
+ if (personality_wordsize[current_personality] != sizeof(sa.sa_flags)
+ && personality_wordsize[current_personality] == 4
+ ) {
+ struct new_sigaction32 sa32;
+ r = umove(tcp, addr, &sa32);
+ if (r >= 0) {
+ memset(&sa, 0, sizeof(sa));
+ sa.__sa_handler = (void*)(unsigned long)sa32.__sa_handler;
+ sa.sa_flags = sa32.sa_flags;
+ sa.sa_restorer = (void*)(unsigned long)sa32.sa_restorer;
+ /* Kernel treats sa_mask as an array of longs.
+ * For 32-bit process, "long" is uint32_t, thus, for example,
+ * 32th bit in sa_mask will end up as bit 0 in sa_mask[1].
+ * But for (64-bit) kernel, 32th bit in sa_mask is
+ * 32th bit in 0th (64-bit) long!
+ * For little-endian, it's the same.
+ * For big-endian, we swap 32-bit words.
+ */
+ sa.sa_mask[0] = sa32.sa_mask[0] + ((long)(sa32.sa_mask[1]) << 32);
+ }
+ } else
+#endif
+ {
+ r = umove(tcp, addr, &sa);
+ }
+ if (r < 0) {
tprintf("{...}");
- else {
- switch ((long) sa.__sigaction_handler.__sa_handler) {
- case (long) SIG_ERR:
- tprintf("{SIG_ERR}");
- break;
- case (long) SIG_DFL:
- tprintf("{SIG_DFL}");
- break;
- case (long) SIG_IGN:
- tprintf("{SIG_IGN}");
- break;
- default:
- tprintf("{%#lx, ",
- (long) sa.__sigaction_handler.__sa_handler);
- sigemptyset(&sigset);
+ goto after_sa;
+ }
+ /* Architectures using function pointers, like
+ * hppa, may need to manipulate the function pointer
+ * to compute the result of a comparison. However,
+ * the SA_HANDLER function pointer exists only in
+ * the address space of the traced process, and can't
+ * be manipulated by strace. In order to prevent the
+ * compiler from generating code to manipulate
+ * SA_HANDLER we cast the function pointers to long. */
+ if ((long)sa.__sa_handler == (long)SIG_ERR)
+ tprintf("{SIG_ERR, ");
+ else if ((long)sa.__sa_handler == (long)SIG_DFL)
+ tprintf("{SIG_DFL, ");
+ else if ((long)sa.__sa_handler == (long)SIG_IGN)
+ tprintf("{SIG_IGN, ");
+ else
+ tprintf("{%#lx, ", (long) sa.__sa_handler);
+ /* Questionable code below.
+ * Kernel won't handle sys_rt_sigaction
+ * with wrong sigset size (just returns EINVAL)
+ * therefore tcp->u_arg[3(4)] _must_ be NSIG / 8 here,
+ * and we always use smaller memcpy. */
+ sigemptyset(&sigset);
#ifdef LINUXSPARC
- if (tcp->u_arg[4] <= sizeof(sigset))
- memcpy(&sigset, &sa.sa_mask, tcp->u_arg[4]);
+ if (tcp->u_arg[4] <= sizeof(sigset))
+ memcpy(&sigset, &sa.sa_mask, tcp->u_arg[4]);
#else
- if (tcp->u_arg[3] <= sizeof(sigset))
- memcpy(&sigset, &sa.sa_mask, tcp->u_arg[3]);
+ if (tcp->u_arg[3] <= sizeof(sigset))
+ memcpy(&sigset, &sa.sa_mask, tcp->u_arg[3]);
#endif
- else
- memcpy(&sigset, &sa.sa_mask, sizeof(sigset));
- printsigmask(&sigset, 1);
- tprintf(", ");
- printflags(sigact_flags, sa.sa_flags, "SA_???");
+ else
+ memcpy(&sigset, &sa.sa_mask, sizeof(sigset));
+ printsigmask(&sigset, 1);
+ tprintf(", ");
+ printflags(sigact_flags, sa.sa_flags, "SA_???");
#ifdef SA_RESTORER
- if (sa.sa_flags & SA_RESTORER)
- tprintf(", %p", sa.sa_restorer);
+ if (sa.sa_flags & SA_RESTORER)
+ tprintf(", %p", sa.sa_restorer);
#endif
- tprintf("}");
- }
- }
+ tprintf("}");
+
+ after_sa:
if (entering(tcp))
tprintf(", ");
else
#elif defined(ALPHA)
tprintf(", %lu, %#lx", tcp->u_arg[3], tcp->u_arg[4]);
#else
- tprintf(", %lu", addr = tcp->u_arg[3]);
+ tprintf(", %lu", tcp->u_arg[3]);
#endif
return 0;
}
- int
-sys_rt_sigpending(tcp)
- struct tcb *tcp;
+int
+sys_rt_sigpending(struct tcb *tcp)
{
sigset_t sigset;
}
return 0;
}
- int
-sys_rt_sigsuspend(tcp)
- struct tcb *tcp;
+
+int
+sys_rt_sigsuspend(struct tcb *tcp)
{
if (entering(tcp)) {
sigset_t sigm;
}
return 0;
}
- int
-sys_rt_sigqueueinfo(tcp)
- struct tcb *tcp;
+
+int
+sys_rt_sigqueueinfo(struct tcb *tcp)
{
if (entering(tcp)) {
siginfo_t si;
if (umove(tcp, tcp->u_arg[2], &si) < 0)
tprintf("%#lx", tcp->u_arg[2]);
else
- printsiginfo(&si, verbose (tcp));
+ printsiginfo(&si, verbose(tcp));
}
return 0;
}
-int sys_rt_sigtimedwait(tcp)
- struct tcb *tcp;
+int sys_rt_sigtimedwait(struct tcb *tcp)
{
if (entering(tcp)) {
sigset_t sigset;
else
printsigmask(&sigset, 1);
tprintf(", ");
+ /* This is the only "return" parameter, */
+ if (tcp->u_arg[1] != 0)
+ return 0;
+ /* ... if it's NULL, can decode all on entry */
+ tprintf("NULL, ");
}
- else {
+ else if (tcp->u_arg[1] != 0) {
+ /* syscall exit, and u_arg[1] wasn't NULL */
if (syserror(tcp))
- tprintf("%#lx", tcp->u_arg[0]);
+ tprintf("%#lx, ", tcp->u_arg[1]);
else {
siginfo_t si;
if (umove(tcp, tcp->u_arg[1], &si) < 0)
- tprintf("%#lx", tcp->u_arg[1]);
- else
- printsiginfo(&si, verbose (tcp));
- /* XXX For now */
- tprintf(", %#lx", tcp->u_arg[2]);
- tprintf(", %d", (int) tcp->u_arg[3]);
+ tprintf("%#lx, ", tcp->u_arg[1]);
+ else {
+ printsiginfo(&si, verbose(tcp));
+ tprintf(", ");
+ }
}
}
+ else {
+ /* syscall exit, and u_arg[1] was NULL */
+ return 0;
+ }
+ print_timespec(tcp, tcp->u_arg[2]);
+ tprintf(", %d", (int) tcp->u_arg[3]);
return 0;
};
int
-sys_restart_syscall(tcp)
-struct tcb *tcp;
+sys_restart_syscall(struct tcb *tcp)
{
if (entering(tcp))
tprintf("<... resuming interrupted call ...>");
return 0;
}
+static int
+do_signalfd(struct tcb *tcp, int flags_arg)
+{
+ if (entering(tcp)) {
+ printfd(tcp, tcp->u_arg[0]);
+ tprintf(", ");
+ print_sigset(tcp, tcp->u_arg[1], 1);
+ tprintf(", %lu", tcp->u_arg[2]);
+ if (flags_arg >= 0) {
+ tprintf(", ");
+ printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???");
+ }
+ }
+ return 0;
+}
+
+int
+sys_signalfd(struct tcb *tcp)
+{
+ return do_signalfd(tcp, -1);
+}
+
+int
+sys_signalfd4(struct tcb *tcp)
+{
+ return do_signalfd(tcp, 3);
+}
#endif /* LINUX */
projects / strace / blobdiff