+/*
+ * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
+ * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
+ * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
+ * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
+ * Copyright (c) 2005-2015 Dmitry V. Levin <ldv@altlinux.org>
+ * Copyright (c) 2014-2018 The strace developers.
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
#include "defs.h"
-#include <dirent.h>
-#define D_NAME_LEN_MAX 256
+#include DEF_MPERS_TYPE(kernel_dirent)
-struct kernel_dirent {
- unsigned long d_ino;
- unsigned long d_off;
- unsigned short d_reclen;
- char d_name[1];
-};
+#include MPERS_DEFS
+
+#define D_NAME_LEN_MAX 256
static void
-print_old_dirent(struct tcb *tcp, long addr)
+print_old_dirent(struct tcb *const tcp, const kernel_ulong_t 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);
+ kernel_dirent d;
+
+ if (umove_or_printaddr(tcp, addr, &d))
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);
+ tprintf("{d_ino=%llu, d_off=%llu, d_reclen=%u, d_name=",
+ zero_extend_signed_to_ull(d.d_ino),
+ zero_extend_signed_to_ull(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);
+ printpathn(tcp, addr + offsetof(kernel_dirent, d_name), d.d_reclen);
tprints("}");
}
-int
-sys_readdir(struct tcb *tcp)
+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]);
+ if (tcp->u_rval == 0)
+ printaddr(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]);
+ tprintf(", %" PRI_klu, tcp->u_arg[2]);
}
return 0;
}
-#include "xlat/direnttypes.h"
-
-int
-sys_getdents(struct tcb *tcp)
+SYS_FUNC(getdents)
{
unsigned int i, len, dents = 0;
- char *buf;
+ unsigned char *buf;
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
return 0;
}
+
+ const unsigned int count = tcp->u_arg[2];
+
if (syserror(tcp) || !verbose(tcp)) {
- tprintf("%#lx, %lu", tcp->u_arg[1], tcp->u_arg[2]);
+ tprints(", ");
+ printaddr(tcp->u_arg[1]);
+ tprintf(", %u", count);
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))
+ else if (tcp->u_rval < (int) sizeof(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]);
+ if (!buf || umoven(tcp, tcp->u_arg[1], len, buf) < 0) {
+ tprints(", ");
+ printaddr(tcp->u_arg[1]);
+ tprintf(", %u", count);
free(buf);
return 0;
}
buf = NULL;
}
+ tprints(",");
if (!abbrev(tcp))
- tprints("{");
- for (i = 0; len && i <= len - sizeof(struct kernel_dirent); ) {
- struct kernel_dirent *d = (struct kernel_dirent *) &buf[i];
+ tprints(" [");
+ for (i = 0; len && i <= len - sizeof(kernel_dirent); ) {
+ kernel_dirent *d = (kernel_dirent *) &buf[i];
if (!abbrev(tcp)) {
- int oob = d->d_reclen < sizeof(struct kernel_dirent) ||
+ int oob = d->d_reclen < sizeof(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;
+ d_name_len -= offsetof(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);
+ tprintf("%s{d_ino=%llu, d_off=%llu, d_reclen=%u"
+ ", d_name=", i ? ", " : "",
+ zero_extend_signed_to_ull(d->d_ino),
+ zero_extend_signed_to_ull(d->d_off),
+ d->d_reclen);
- if (print_quoted_string(d->d_name, d_name_len,
- QUOTE_0_TERMINATED) > 0) {
- tprints("...");
- }
+ print_quoted_cstring(d->d_name, d_name_len);
tprints(", d_type=");
if (oob)
tprints("?");
else
- printxval(direnttypes, buf[i + d->d_reclen - 1], "DT_???");
+ printxval(dirent_types, buf[i + d->d_reclen - 1], "DT_???");
tprints("}");
}
dents++;
- if (d->d_reclen < sizeof(struct kernel_dirent)) {
- tprints("/* d_reclen < sizeof(struct kernel_dirent) */");
+ if (d->d_reclen < sizeof(kernel_dirent)) {
+ tprints_comment("d_reclen < sizeof(struct 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;
-}
-
-int
-sys_getdents64(struct tcb *tcp)
-{
- /* 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("}");
+ tprints("]");
else
- tprintf("/* %u entries */", dents);
- tprintf(", %lu", tcp->u_arg[2]);
+ tprintf_comment("%u entries", dents);
+ tprintf(", %u", count);
free(buf);
return 0;
}
projects / strace / blobdiff