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Implement ioprio_get and ioprio_set decoding

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* ioprio.c: New file.
* Makefile.am (strace_SOURCES): Add ioprio.c.
* linux/dummy.h (sys_ioprio_get, sys_ioprio_set): Remove.
* linux/syscall.h (sys_ioprio_get, sys_ioprio_set): New prototypes.
This commit is contained in:
Дмитрий Левин 2014-02-05 17:27:43 +00:00
parent f67502e404
commit fc4727de60
4 changed files with 89 additions and 2 deletions
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1
Makefile.am
View File

@ -25,6 +25,7 @@ strace_SOURCES = \
inotify.c \
io.c \
ioctl.c \
ioprio.c \
ipc.c \
kexec.c \
loop.c \

86
ioprio.c Normal file
View File

@ -0,0 +1,86 @@
#include "defs.h"
enum {
IOPRIO_WHO_PROCESS = 1,
IOPRIO_WHO_PGRP,
IOPRIO_WHO_USER
};
static const struct xlat ioprio_who[] = {
XLAT(IOPRIO_WHO_PROCESS),
XLAT(IOPRIO_WHO_PGRP),
XLAT(IOPRIO_WHO_USER),
XLAT_END
};
enum {
IOPRIO_CLASS_NONE,
IOPRIO_CLASS_RT,
IOPRIO_CLASS_BE,
IOPRIO_CLASS_IDLE
};
static const struct xlat ioprio_class[] = {
XLAT(IOPRIO_CLASS_NONE),
XLAT(IOPRIO_CLASS_RT),
XLAT(IOPRIO_CLASS_BE),
XLAT(IOPRIO_CLASS_IDLE),
XLAT_END
};
#define IOPRIO_CLASS_SHIFT (13)
#define IOPRIO_PRIO_MASK ((1ul << IOPRIO_CLASS_SHIFT) - 1)
#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT)
#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK)
static const char *
sprint_ioprio(int ioprio)
{
static char outstr[256];
const char *str;
int class, data;
class = IOPRIO_PRIO_CLASS(ioprio);
data = IOPRIO_PRIO_DATA(ioprio);
str = xlookup(ioprio_class, class);
if (str)
sprintf(outstr, "IOPRIO_PRIO_VALUE(%s,%d)", str, data);
else
sprintf(outstr, "IOPRIO_PRIO_VALUE(%#x /* %s */,%d)",
class, "IOPRIO_CLASS_???", data);
return outstr;
}
int
sys_ioprio_get(struct tcb *tcp)
{
if (entering(tcp)) {
/* int which */
printxval(ioprio_who, tcp->u_arg[0], "IOPRIO_WHO_???");
/* int who */
tprintf(", %d", (int) tcp->u_arg[1]);
return 0;
} else {
if (syserror(tcp))
return 0;
tcp->auxstr = sprint_ioprio(tcp->u_rval);
return RVAL_STR;
}
}
int
sys_ioprio_set(struct tcb *tcp)
{
if (entering(tcp)) {
/* int which */
printxval(ioprio_who, tcp->u_arg[0], "IOPRIO_WHO_???");
/* int who */
tprintf(", %d, ", (int) tcp->u_arg[1]);
/* int ioprio */
tprints(sprint_ioprio(tcp->u_arg[2]));
}
return 0;
}

2
linux/dummy.h
View File

@ -35,8 +35,6 @@
#define sys_add_key printargs
#define sys_ioperm printargs
#define sys_iopl printargs
#define sys_ioprio_get printargs
#define sys_ioprio_set printargs
#define sys_kcmp printargs
#define sys_keyctl printargs
#define sys_lookup_dcookie printargs

2
linux/syscall.h
View File

@ -121,6 +121,8 @@ int sys_io_getevents();
int sys_io_setup();
int sys_io_submit();
int sys_ioctl();
int sys_ioprio_get();
int sys_ioprio_set();
int sys_ipc();
int sys_kexec_load();
int sys_kill();