*/
#include "defs.h"
+#include <linux/aio_abi.h>
-/* --- Copied from libaio-0.3.109/src/libaio.h ---
- * Why keep a copy instead of using external libaio.h?
- * Because we want to properly decode 32-bit aio calls
- * by 64-bit strace. For that, we need more definitions than
- * libaio.h provides. (TODO).
- * Keeping our local 32-bit compat defs in sync with libaio.h
- * _without seeing libaio structs_ is hard/more bug-prone.
- * A smaller benefit is that we don't need libaio installed.
- */
-#define HAVE_LIBAIO_H 1
-typedef enum io_iocb_cmd {
- IO_CMD_PREAD = 0,
- IO_CMD_PWRITE = 1,
-
- IO_CMD_FSYNC = 2,
- IO_CMD_FDSYNC = 3,
-
- IO_CMD_POLL = 5, /* Never implemented in mainline, see io_prep_poll */
- IO_CMD_NOOP = 6,
- IO_CMD_PREADV = 7,
- IO_CMD_PWRITEV = 8,
-} io_iocb_cmd_t;
-
-#if defined(__i386__) /* little endian, 32 bits */
-#define PADDED(x, y) x; unsigned y
-#define PADDEDptr(x, y) x; unsigned y
-#define PADDEDul(x, y) unsigned long x; unsigned y
-#elif defined(__ia64__) || defined(__x86_64__) || defined(__alpha__)
-#define PADDED(x, y) x, y
-#define PADDEDptr(x, y) x
-#define PADDEDul(x, y) unsigned long x
-#elif defined(__powerpc64__) /* big endian, 64 bits */
-#define PADDED(x, y) unsigned y; x
-#define PADDEDptr(x,y) x
-#define PADDEDul(x, y) unsigned long x
-#elif defined(__PPC__) /* big endian, 32 bits */
-#define PADDED(x, y) unsigned y; x
-#define PADDEDptr(x, y) unsigned y; x
-#define PADDEDul(x, y) unsigned y; unsigned long x
-#elif defined(__s390x__) /* big endian, 64 bits */
-#define PADDED(x, y) unsigned y; x
-#define PADDEDptr(x,y) x
-#define PADDEDul(x, y) unsigned long x
-#elif defined(__s390__) /* big endian, 32 bits */
-#define PADDED(x, y) unsigned y; x
-#define PADDEDptr(x, y) unsigned y; x
-#define PADDEDul(x, y) unsigned y; unsigned long x
-#elif defined(__arm__)
-# if defined (__ARMEB__) /* big endian, 32 bits */
-#define PADDED(x, y) unsigned y; x
-#define PADDEDptr(x, y) unsigned y; x
-#define PADDEDul(x, y) unsigned y; unsigned long x
-# else /* little endian, 32 bits */
-#define PADDED(x, y) x; unsigned y
-#define PADDEDptr(x, y) x; unsigned y
-#define PADDEDul(x, y) unsigned long x; unsigned y
-# endif
-#else
-# warning No AIO definitions for this architecture => no io_submit decoding
-# undef HAVE_LIBAIO_H
-#endif
-
-#ifdef HAVE_LIBAIO_H
-struct io_iocb_poll {
- PADDED(int events, __pad1);
-}; /* result code is the set of result flags or -'ve errno */
-
-struct io_iocb_sockaddr {
- struct sockaddr *addr;
- int len;
-}; /* result code is the length of the sockaddr, or -'ve errno */
-
-struct io_iocb_common {
- PADDEDptr(void *buf, __pad1);
- PADDEDul(nbytes, __pad2);
- long long offset;
- long long __pad3;
- unsigned flags;
- unsigned resfd;
-}; /* result code is the amount read or -'ve errno */
-
-struct io_iocb_vector {
- const struct iovec *vec;
- int nr;
- long long offset;
-}; /* result code is the amount read or -'ve errno */
-
-struct iocb {
- PADDEDptr(void *data, __pad1); /* Return in the io completion event */
- PADDED(unsigned key, __pad2); /* For use in identifying io requests */
-
- short aio_lio_opcode;
- short aio_reqprio;
- int aio_fildes;
-
- union {
- struct io_iocb_common c;
- struct io_iocb_vector v;
- struct io_iocb_poll poll;
- struct io_iocb_sockaddr saddr;
- } u;
-};
-
-struct io_event {
- PADDEDptr(void *data, __pad1);
- PADDEDptr(struct iocb *obj, __pad2);
- PADDEDul(res, __pad3);
- PADDEDul(res2, __pad4);
-};
-
-#undef PADDED
-#undef PADDEDptr
-#undef PADDEDul
-
-#endif /* HAVE_LIBAIO_H */
-
-/* --- End of a chunk of libaio.h --- */
-/* Not defined in libaio.h */
-#ifndef IOCB_RESFD
-# define IOCB_RESFD (1 << 0)
-#endif
-
-int
-sys_io_setup(struct tcb *tcp)
+SYS_FUNC(io_setup)
{
if (entering(tcp))
- tprintf("%ld, ", tcp->u_arg[0]);
- else {
- if (syserror(tcp))
- tprintf("0x%0lx", tcp->u_arg[1]);
- else {
- unsigned long user_id;
- if (umove(tcp, tcp->u_arg[1], &user_id) == 0)
- tprintf("{%lu}", user_id);
- else
- tprints("{...}");
- }
- }
+ tprintf("%u, ", (unsigned int) tcp->u_arg[0]);
+ else
+ printnum_ulong(tcp, tcp->u_arg[1]);
return 0;
}
-int
-sys_io_destroy(struct tcb *tcp)
+SYS_FUNC(io_destroy)
{
- if (entering(tcp))
- tprintf("%lu", tcp->u_arg[0]);
- return 0;
-}
+ tprintf("%lu", tcp->u_arg[0]);
-#ifdef HAVE_LIBAIO_H
+ return RVAL_DECODED;
+}
enum iocb_sub {
- SUB_NONE, SUB_COMMON, SUB_POLL, SUB_VECTOR
+ SUB_NONE, SUB_COMMON, SUB_VECTOR
};
static enum iocb_sub
{ "pwrite", SUB_COMMON },
{ "fsync", SUB_NONE },
{ "fdsync", SUB_NONE },
- { "op4", SUB_NONE },
- { "poll", SUB_POLL },
+ { "preadx", SUB_NONE },
+ { "poll", SUB_NONE },
{ "noop", SUB_NONE },
{ "preadv", SUB_VECTOR },
{ "pwritev", SUB_VECTOR },
}
static void
-print_common_flags(struct iocb *iocb)
+print_common_flags(const struct iocb *cb)
{
- if (iocb->u.c.flags & IOCB_RESFD)
- tprintf(", resfd=%d", iocb->u.c.resfd);
- if (iocb->u.c.flags & ~IOCB_RESFD)
- tprintf(", flags=%x", iocb->u.c.flags);
+/* IOCB_FLAG_RESFD is available since v2.6.22-rc1~47 */
+#ifdef IOCB_FLAG_RESFD
+ if (cb->aio_flags & IOCB_FLAG_RESFD)
+ tprintf(", resfd=%d", cb->aio_resfd);
+ if (cb->aio_flags & ~IOCB_FLAG_RESFD)
+ tprintf(", flags=%x", cb->aio_flags);
+#endif
}
-#endif /* HAVE_LIBAIO_H */
+static bool
+iocb_is_valid(const struct iocb *cb)
+{
+ return cb->aio_buf == (unsigned long) cb->aio_buf &&
+ cb->aio_nbytes == (size_t) cb->aio_nbytes &&
+ (ssize_t) cb->aio_nbytes >= 0;
+}
-int
-sys_io_submit(struct tcb *tcp)
+static enum iocb_sub
+print_iocb_header(const struct iocb *cb)
{
- if (entering(tcp)) {
-#ifdef HAVE_LIBAIO_H
- long nr = tcp->u_arg[1];
- /* if nr <= 0, we end up printing just "{}" */
- tprintf("%lu, %ld, {", tcp->u_arg[0], tcp->u_arg[1]);
- {
- long i;
- struct iocb **iocbs = (void *)tcp->u_arg[2];
-//FIXME: decoding of 32-bit call by 64-bit strace
+ enum iocb_sub sub;
- for (i = 0; i < nr; i++, iocbs++) {
- enum iocb_sub sub;
- struct iocb *iocbp;
- struct iocb iocb;
- if (i)
- tprints(", ");
+ if (cb->aio_data)
+ tprintf("data=%#" PRIx64 ", ",
+ (uint64_t) cb->aio_data);
- if (umove(tcp, (unsigned long)iocbs, &iocbp)) {
- tprintf("%#lx", (unsigned long)iocbs);
- /* No point in trying to read iocbs+1 etc */
- /* (nr can be ridiculously large): */
- break;
- }
- if (umove(tcp, (unsigned long)iocbp, &iocb)) {
- tprintf("{%#lx}", (unsigned long)iocbp);
- continue;
- }
- tprints("{");
- if (iocb.data)
- tprintf("data:%p, ", iocb.data);
- if (iocb.key)
- tprintf("key:%u, ", iocb.key);
- sub = tprint_lio_opcode(iocb.aio_lio_opcode);
- if (iocb.aio_reqprio)
- tprintf(", reqprio:%d", iocb.aio_reqprio);
- tprintf(", filedes:%d", iocb.aio_fildes);
- switch (sub) {
- case SUB_COMMON:
- if (iocb.aio_lio_opcode == IO_CMD_PWRITE) {
- tprints(", str:");
- printstr(tcp, (unsigned long)iocb.u.c.buf,
- iocb.u.c.nbytes);
- } else
- tprintf(", buf:%p", iocb.u.c.buf);
- tprintf(", nbytes:%lu, offset:%lld",
- iocb.u.c.nbytes,
- iocb.u.c.offset);
- print_common_flags(&iocb);
- break;
- case SUB_VECTOR:
- tprintf(", %lld", iocb.u.v.offset);
- print_common_flags(&iocb);
- tprints(", ");
- tprint_iov(tcp, iocb.u.v.nr,
- (unsigned long)iocb.u.v.vec,
- iocb.aio_lio_opcode == IO_CMD_PWRITEV
- );
- break;
- case SUB_POLL:
- tprintf(", %x", iocb.u.poll.events);
- break;
- case SUB_NONE:
- break;
- }
- tprints("}");
+ if (cb->aio_key)
+ tprintf("key=%u, ", cb->aio_key);
+
+ sub = tprint_lio_opcode(cb->aio_lio_opcode);
+ if (cb->aio_reqprio)
+ tprintf(", reqprio=%hd", cb->aio_reqprio);
+
+ tprintf(", fildes=%d", cb->aio_fildes);
+
+ return sub;
+}
+
+static void
+print_iocb(struct tcb *tcp, const struct iocb *cb)
+{
+ enum iocb_sub sub = print_iocb_header(cb);
+
+ switch (sub) {
+ case SUB_COMMON:
+ if (cb->aio_lio_opcode == 1 && iocb_is_valid(cb)) {
+ tprints(", str=");
+ printstr(tcp, (unsigned long) cb->aio_buf,
+ (unsigned long) cb->aio_nbytes);
+ } else {
+ tprintf(", buf=%#" PRIx64, (uint64_t) cb->aio_buf);
+ }
+ tprintf(", nbytes=%" PRIu64 ", offset=%" PRId64,
+ (uint64_t) cb->aio_nbytes, (int64_t) cb->aio_offset);
+ print_common_flags(cb);
+ break;
+ case SUB_VECTOR:
+ if (iocb_is_valid(cb)) {
+ tprints(", iovec=");
+ tprint_iov(tcp, cb->aio_nbytes, cb->aio_buf,
+ cb->aio_lio_opcode == 8);
+ } else {
+ tprintf(", buf=%#" PRIx64 ", nbytes=%" PRIu64,
+ (uint64_t) cb->aio_buf,
+ (uint64_t) cb->aio_nbytes);
+ }
+ tprintf(", offset=%" PRId64, (int64_t) cb->aio_offset);
+ print_common_flags(cb);
+ break;
+ case SUB_NONE:
+ break;
+ }
+}
+
+SYS_FUNC(io_submit)
+{
+ long nr = tcp->u_arg[1];
+ /* if nr <= 0, we end up printing just "[]" */
+ tprintf("%lu, %ld, [", tcp->u_arg[0], nr);
+ {
+ long i;
+ long iocbs = tcp->u_arg[2];
+
+ for (i = 0; i < nr; ++i, iocbs += current_wordsize) {
+ unsigned long iocbp;
+ struct iocb cb;
+
+ if (i)
+ tprints(", ");
+
+ if (umove_ulong_or_printaddr(tcp, iocbs, &iocbp)) {
+ /*
+ * No point in trying to read the whole array
+ * because nr can be ridiculously large.
+ */
+ break;
}
+
+ tprints("{");
+ if (!umove_or_printaddr(tcp, iocbp, &cb))
+ print_iocb(tcp, &cb);
+ tprints("}");
}
- tprints("}");
-#else
- tprintf("%lu, %ld, %#lx", tcp->u_arg[0], tcp->u_arg[1], tcp->u_arg[2]);
-#endif
}
+ tprints("]");
+ return RVAL_DECODED;
+}
+
+static int
+print_io_event(struct tcb *tcp, const long addr)
+{
+ struct io_event event;
+
+ if (umove_or_printaddr(tcp, addr, &event))
+ return -1;
+ tprintf("{data=%#" PRIx64 ", obj=%#" PRIx64
+ ", res=%" PRId64 ", res2=%" PRId64 "}",
+ (uint64_t) event.data, (uint64_t) event.obj,
+ (int64_t) event.res, (int64_t) event.res2);
return 0;
}
-int
-sys_io_cancel(struct tcb *tcp)
+SYS_FUNC(io_cancel)
{
if (entering(tcp)) {
-#ifdef HAVE_LIBAIO_H
- struct iocb iocb;
-#endif
tprintf("%lu, ", tcp->u_arg[0]);
-#ifdef HAVE_LIBAIO_H
- if (umove(tcp, tcp->u_arg[1], &iocb) == 0) {
- tprintf("{%p, %u, %u, %u, %d}, ",
- iocb.data, iocb.key,
- (unsigned)iocb.aio_lio_opcode,
- (unsigned)iocb.aio_reqprio, iocb.aio_fildes);
- } else
-#endif
- tprints("{...}, ");
- } else {
- if (tcp->u_rval < 0)
- tprints("{...}");
- else {
-#ifdef HAVE_LIBAIO_H
- struct io_event event;
- if (umove(tcp, tcp->u_arg[2], &event) == 0)
- tprintf("{%p, %p, %ld, %ld}",
- event.data, event.obj,
- event.res, event.res2);
- else
-#endif
- tprints("{...}");
+ struct iocb cb;
+
+ if (!umove_or_printaddr(tcp, tcp->u_arg[1], &cb)) {
+ tprints("{");
+ print_iocb_header(&cb);
+ tprints("}");
}
+ tprints(", ");
+ } else {
+ print_io_event(tcp, tcp->u_arg[2]);
}
return 0;
}
-int
-sys_io_getevents(struct tcb *tcp)
+SYS_FUNC(io_getevents)
{
if (entering(tcp)) {
- tprintf("%ld, %ld, %ld, ", tcp->u_arg[0], tcp->u_arg[1],
- tcp->u_arg[2]);
+ tprintf("%lu, %ld, %ld, ",
+ tcp->u_arg[0], tcp->u_arg[1], tcp->u_arg[2]);
} else {
if (tcp->u_rval == 0) {
- tprints("{}");
+ tprints("[]");
} else {
-#ifdef HAVE_LIBAIO_H
struct io_event *events = (void *)tcp->u_arg[3];
long i, nr = tcp->u_rval;
for (i = 0; i < nr; i++, events++) {
- struct io_event event;
-
if (i == 0)
- tprints("{");
+ tprints("[");
else
tprints(", ");
- if (umove(tcp, (unsigned long)events, &event) != 0) {
- tprints("{...}");
- continue;
- }
- tprintf("{%p, %p, %ld, %ld}", event.data,
- event.obj, event.res, event.res2);
+ if (print_io_event(tcp, (long)events))
+ break;
}
- tprints("}, ");
-#else
- tprints("{...}");
-#endif
+ tprints("], ");
}
+ /*
+ * Since the timeout parameter is read by the kernel
+ * on entering syscall, it has to be decoded the same way
+ * whether the syscall has failed or not.
+ */
+ temporarily_clear_syserror(tcp);
print_timespec(tcp, tcp->u_arg[4]);
+ restore_cleared_syserror(tcp);
}
return 0;
}
projects / strace / blobdiff