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#include "defs.h"
#include <dirent.h>
#define D_NAME_LEN_MAX 256
struct kernel_dirent {
unsigned long d_ino;
unsigned long d_off;
unsigned short d_reclen;
char d_name[1];
};
static void
print_old_dirent(struct tcb *tcp, long addr)
{
#ifdef SH64
typedef struct kernel_dirent old_dirent_t;
#else
typedef struct {
uint32_t d_ino;
uint32_t d_off;
unsigned short d_reclen;
char d_name[1];
} old_dirent_t;
#endif
old_dirent_t d;
if (!verbose(tcp) || umove(tcp, addr, &d) < 0) {
tprintf("%#lx", addr);
return;
}
tprintf("{d_ino=%lu, d_off=%lu, d_reclen=%u, d_name=",
(unsigned long) d.d_ino, (unsigned long) d.d_off, d.d_reclen);
if (d.d_reclen > D_NAME_LEN_MAX)
d.d_reclen = D_NAME_LEN_MAX;
printpathn(tcp, addr + offsetof(old_dirent_t, d_name), d.d_reclen);
tprints("}");
}
SYS_FUNC(readdir)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
if (syserror(tcp) || tcp->u_rval == 0 || !verbose(tcp))
tprintf("%#lx", tcp->u_arg[1]);
else
print_old_dirent(tcp, tcp->u_arg[1]);
/* Not much point in printing this out, it is always 1. */
if (tcp->u_arg[2] != 1)
tprintf(", %lu", tcp->u_arg[2]);
}
return 0;
}
#include "xlat/direnttypes.h"
SYS_FUNC(getdents)
{
unsigned int i, len, dents = 0;
char *buf;
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
return 0;
}
if (syserror(tcp) || !verbose(tcp)) {
tprintf("%#lx, %lu", tcp->u_arg[1], tcp->u_arg[2]);
return 0;
}
/* Beware of insanely large or too small values in tcp->u_rval */
if (tcp->u_rval > 1024*1024)
len = 1024*1024;
else if (tcp->u_rval < (int) sizeof(struct kernel_dirent))
len = 0;
else
len = tcp->u_rval;
if (len) {
buf = malloc(len);
if (!buf)
die_out_of_memory();
if (umoven(tcp, tcp->u_arg[1], len, buf) < 0) {
tprintf("%#lx, %lu", tcp->u_arg[1], tcp->u_arg[2]);
free(buf);
return 0;
}
} else {
buf = NULL;
}
if (!abbrev(tcp))
tprints("{");
for (i = 0; len && i <= len - sizeof(struct kernel_dirent); ) {
struct kernel_dirent *d = (struct kernel_dirent *) &buf[i];
if (!abbrev(tcp)) {
int oob = d->d_reclen < sizeof(struct kernel_dirent) ||
i + d->d_reclen - 1 >= len;
int d_name_len = oob ? len - i : d->d_reclen;
d_name_len -= offsetof(struct kernel_dirent, d_name) + 1;
if (d_name_len > D_NAME_LEN_MAX)
d_name_len = D_NAME_LEN_MAX;
tprintf("%s{d_ino=%lu, d_off=%lu, d_reclen=%u, d_name=",
i ? " " : "", d->d_ino, d->d_off, d->d_reclen);
if (print_quoted_string(d->d_name, d_name_len,
QUOTE_0_TERMINATED) > 0) {
tprints("...");
}
tprints(", d_type=");
if (oob)
tprints("?");
else
printxval(direnttypes, buf[i + d->d_reclen - 1], "DT_???");
tprints("}");
}
dents++;
if (d->d_reclen < sizeof(struct kernel_dirent)) {
tprints("/* d_reclen < sizeof(struct kernel_dirent) */");
break;
}
i += d->d_reclen;
}
if (!abbrev(tcp))
tprints("}");
else
tprintf("/* %u entries */", dents);
tprintf(", %lu", tcp->u_arg[2]);
free(buf);
return 0;
}
SYS_FUNC(getdents64)
{
/* the minimum size of a valid dirent64 structure */
const unsigned int d_name_offset = offsetof(struct dirent64, d_name);
unsigned int i, len, dents = 0;
char *buf;
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
return 0;
}
if (syserror(tcp) || !verbose(tcp)) {
tprintf("%#lx, %lu", tcp->u_arg[1], tcp->u_arg[2]);
return 0;
}
/* Beware of insanely large or too small tcp->u_rval */
if (tcp->u_rval > 1024*1024)
len = 1024*1024;
else if (tcp->u_rval < (int) d_name_offset)
len = 0;
else
len = tcp->u_rval;
if (len) {
buf = malloc(len);
if (!buf)
die_out_of_memory();
if (umoven(tcp, tcp->u_arg[1], len, buf) < 0) {
tprintf("%#lx, %lu", tcp->u_arg[1], tcp->u_arg[2]);
free(buf);
return 0;
}
} else {
buf = NULL;
}
if (!abbrev(tcp))
tprints("{");
for (i = 0; len && i <= len - d_name_offset; ) {
struct dirent64 *d = (struct dirent64 *) &buf[i];
if (!abbrev(tcp)) {
int d_name_len;
if (d->d_reclen >= d_name_offset
&& i + d->d_reclen <= len) {
d_name_len = d->d_reclen - d_name_offset;
} else {
d_name_len = len - i - d_name_offset;
}
if (d_name_len > D_NAME_LEN_MAX)
d_name_len = D_NAME_LEN_MAX;
tprintf("%s{d_ino=%" PRIu64 ", d_off=%" PRId64
", d_reclen=%u, d_type=",
i ? " " : "",
d->d_ino,
d->d_off,
d->d_reclen);
printxval(direnttypes, d->d_type, "DT_???");
tprints(", d_name=");
if (print_quoted_string(d->d_name, d_name_len,
QUOTE_0_TERMINATED) > 0) {
tprints("...");
}
tprints("}");
}
if (d->d_reclen < d_name_offset) {
tprints("/* d_reclen < offsetof(struct dirent64, d_name) */");
break;
}
i += d->d_reclen;
dents++;
}
if (!abbrev(tcp))
tprints("}");
else
tprintf("/* %u entries */", dents);
tprintf(", %lu", tcp->u_arg[2]);
free(buf);
return 0;
}
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