* Copyright (c) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Linux for s390 port by D.J. Barrow
* <barrow_dj@mail.yahoo.com,djbarrow@de.ibm.com>
+ * Copyright (c) 1999-2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
# include <sys/xattr.h>
#endif
#include <sys/uio.h>
+#include <asm/unistd.h>
+#include "scno.h"
#include "regs.h"
#include "ptrace.h"
tv->tv_usec %= 1000000;
}
-const char *
-xlookup(const struct xlat *xlat, const uint64_t val)
-{
- for (; xlat->str != NULL; xlat++)
- if (xlat->val == val)
- return xlat->str;
- return NULL;
-}
-
-static int
-xlat_bsearch_compare(const void *a, const void *b)
-{
- const uint64_t val1 = *(const uint64_t *) a;
- const uint64_t val2 = ((const struct xlat *) b)->val;
- return (val1 > val2) ? 1 : (val1 < val2) ? -1 : 0;
-}
-
-const char *
-xlat_search(const struct xlat *xlat, const size_t nmemb, const uint64_t val)
-{
- const struct xlat *e =
- bsearch((const void*) &val,
- xlat, nmemb, sizeof(*xlat), xlat_bsearch_compare);
-
- return e ? e->str : NULL;
-}
-
#if !defined HAVE_STPCPY
char *
stpcpy(char *dst, const char *src)
next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits)
{
const unsigned endian = 1;
- int little_endian = * (char *) (void *) &endian;
+ int little_endian = *(char *) (void *) &endian;
const uint8_t *array = bit_array;
unsigned pos = cur_bit / 8;
}
}
-/**
- * Print entry in struct xlat table, if there.
- *
- * @param val Value to search a literal representation for.
- * @param dflt String (abbreviated in comment syntax) which should be emitted
- * if no appropriate xlat value has been found.
- * @param xlat (And the following arguments) Pointers to arrays of xlat values.
- * The last argument should be NULL.
- * @return 1 if appropriate xlat value has been found, 0 otherwise.
- */
-int
-printxvals(const uint64_t val, const char *dflt, const struct xlat *xlat, ...)
-{
- va_list args;
-
- va_start(args, xlat);
- for (; xlat; xlat = va_arg(args, const struct xlat *)) {
- const char *str = xlookup(xlat, val);
-
- if (str) {
- tprints(str);
- va_end(args);
- return 1;
- }
- }
- /* No hits -- print raw # instead. */
- tprintf("%#" PRIx64, val);
- if (dflt)
- tprintf(" /* %s */", dflt);
-
- va_end(args);
-
- return 0;
-}
-
-/**
- * Print entry in sorted struct xlat table, if it is there.
- *
- * @param xlat Pointer to an array of xlat values (not terminated with
- * XLAT_END).
- * @param xlat_size Number of xlat elements present in array (usually ARRAY_SIZE
- * if array is declared in the unit's scope and not
- * terminated with XLAT_END).
- * @param val Value to search literal representation for.
- * @param dflt String (abbreviated in comment syntax) which should be
- * emitted if no appropriate xlat value has been found.
- * @return 1 if appropriate xlat value has been found, 0
- * otherwise.
- */
-int
-printxval_searchn(const struct xlat *xlat, size_t xlat_size, uint64_t val,
- const char *dflt)
-{
- const char *s = xlat_search(xlat, xlat_size, val);
-
- if (s) {
- tprints(s);
- return 1;
- }
-
- tprintf("%#" PRIx64, val);
- if (dflt)
- tprintf(" /* %s */", dflt);
-
- return 0;
-}
-
/*
* Fetch 64bit argument at position arg_no and
* return the index of the next argument.
int
getllval(struct tcb *tcp, unsigned long long *val, int arg_no)
{
-#if SIZEOF_LONG > 4 && SIZEOF_LONG == SIZEOF_LONG_LONG
+#if SIZEOF_KERNEL_LONG_T > 4
# ifndef current_klongsize
- if (current_klongsize < SIZEOF_LONG) {
+ if (current_klongsize < SIZEOF_KERNEL_LONG_T) {
# if defined(AARCH64) || defined(POWERPC64)
/* Align arg_no to the next even number. */
arg_no = (arg_no + 1) & 0xe;
*val = tcp->u_arg[arg_no];
arg_no++;
}
-#elif SIZEOF_LONG > 4
-# error Unsupported configuration: SIZEOF_LONG > 4 && SIZEOF_LONG_LONG > SIZEOF_LONG
-#elif SIZEOF_KERNEL_LONG_T > SIZEOF_LONG
-# ifndef current_klongsize
- if (current_klongsize < SIZEOF_KERNEL_LONG_T) {
- *val = ULONG_LONG(tcp->u_arg[arg_no], tcp->u_arg[arg_no + 1]);
- arg_no += 2;
- } else
-# endif /* !current_klongsize */
- {
- *val = tcp->u_arg[arg_no];
- arg_no++;
- }
-#else
-# if defined __ARM_EABI__ || \
- defined LINUX_MIPSO32 || \
- defined POWERPC || \
- defined XTENSA
+#else /* SIZEOF_KERNEL_LONG_T == 4 */
+# if defined __ARM_EABI__ \
+ || defined LINUX_MIPSO32 \
+ || defined POWERPC \
+ || defined XTENSA
/* Align arg_no to the next even number. */
arg_no = (arg_no + 1) & 0xe;
# elif defined SH
return arg_no;
}
-/*
- * Interpret `xlat' as an array of flags
- * print the entries whose bits are on in `flags'
- * return # of flags printed.
- */
-void
-addflags(const struct xlat *xlat, uint64_t flags)
-{
- for (; xlat->str; xlat++) {
- if (xlat->val && (flags & xlat->val) == xlat->val) {
- tprintf("|%s", xlat->str);
- flags &= ~xlat->val;
- }
- }
- if (flags) {
- tprintf("|%#" PRIx64, flags);
- }
-}
-
-/*
- * Interpret `xlat' as an array of flags.
- * Print to static string the entries whose bits are on in `flags'
- * Return static string.
- */
-const char *
-sprintflags(const char *prefix, const struct xlat *xlat, uint64_t flags)
-{
- static char outstr[1024];
- char *outptr;
- int found = 0;
-
- outptr = stpcpy(outstr, prefix);
-
- if (flags == 0 && xlat->val == 0 && xlat->str) {
- strcpy(outptr, xlat->str);
- return outstr;
- }
-
- for (; xlat->str; xlat++) {
- if (xlat->val && (flags & xlat->val) == xlat->val) {
- if (found)
- *outptr++ = '|';
- outptr = stpcpy(outptr, xlat->str);
- found = 1;
- flags &= ~xlat->val;
- if (!flags)
- break;
- }
- }
- if (flags) {
- if (found)
- *outptr++ = '|';
- outptr += sprintf(outptr, "%#" PRIx64, flags);
- }
-
- return outstr;
-}
-
-int
-printflags64(const struct xlat *xlat, uint64_t flags, const char *dflt)
-{
- int n;
- const char *sep;
-
- if (flags == 0 && xlat->val == 0 && xlat->str) {
- tprints(xlat->str);
- return 1;
- }
-
- sep = "";
- for (n = 0; xlat->str; xlat++) {
- if (xlat->val && (flags & xlat->val) == xlat->val) {
- tprintf("%s%s", sep, xlat->str);
- flags &= ~xlat->val;
- sep = "|";
- n++;
- }
- }
-
- if (n) {
- if (flags) {
- tprintf("%s%#" PRIx64, sep, flags);
- n++;
- }
- } else {
- if (flags) {
- tprintf("%#" PRIx64, flags);
- if (dflt)
- tprintf(" /* %s */", dflt);
- } else {
- if (dflt)
- tprints("0");
- }
- }
-
- return n;
-}
-
void
printaddr(const kernel_ulong_t addr)
{
}
#endif /* !current_wordsize */
-const char *
-sprinttime(time_t t)
+#ifndef current_klongsize
+bool
+printnum_addr_klong_int(struct tcb *tcp, const kernel_ulong_t addr)
{
- struct tm *tmp;
- static char buf[sizeof(int) * 3 * 6 + sizeof("+0000")];
+ if (current_klongsize > sizeof(int)) {
+ return printnum_addr_int64(tcp, addr);
+ } else {
+ return printnum_addr_int(tcp, addr);
+ }
+}
+#endif /* !current_klongsize */
+
+/**
+ * Prints time to a (static internal) buffer and returns pointer to it.
+ *
+ * @param sec Seconds since epoch.
+ * @param part_sec Amount of second parts since the start of a second.
+ * @param max_part_sec Maximum value of a valid part_sec.
+ * @param width 1 + floor(log10(max_part_sec)).
+ */
+static const char *
+sprinttime_ex(const long long sec, const unsigned long long part_sec,
+ const unsigned int max_part_sec, const int width)
+{
+ static char buf[sizeof(int) * 3 * 6 + sizeof(part_sec) * 3
+ + sizeof("+0000")];
+
+ if ((sec == 0 && part_sec == 0) || part_sec > max_part_sec)
+ return NULL;
+
+ time_t t = (time_t) sec;
+ struct tm *tmp = (sec == t) ? localtime(&t) : NULL;
+ if (!tmp)
+ return NULL;
+
+ size_t pos = strftime(buf, sizeof(buf), "%FT%T", tmp);
+ if (!pos)
+ return NULL;
+
+ if (part_sec > 0) {
+ int ret = snprintf(buf + pos, sizeof(buf) - pos, ".%0*llu",
+ width, part_sec);
- if (t == 0) {
- strcpy(buf, "0");
- return buf;
+ if (ret < 0 || (size_t) ret >= sizeof(buf) - pos)
+ return NULL;
+
+ pos += ret;
}
- tmp = localtime(&t);
- if (tmp)
- strftime(buf, sizeof(buf), "%FT%T%z", tmp);
- else
- snprintf(buf, sizeof(buf), "%lu", (unsigned long) t);
- return buf;
+ return strftime(buf + pos, sizeof(buf) - pos, "%z", tmp) ? buf : NULL;
+}
+
+const char *
+sprinttime(long long sec)
+{
+ return sprinttime_ex(sec, 0, 0, 0);
+}
+
+const char *
+sprinttime_usec(long long sec, unsigned long long usec)
+{
+ return sprinttime_ex(sec, usec, 999999, 6);
+}
+
+const char *
+sprinttime_nsec(long long sec, unsigned long long nsec)
+{
+ return sprinttime_ex(sec, nsec, 999999999, 9);
}
enum sock_proto
#endif
}
+unsigned long
+getfdinode(struct tcb *tcp, int fd)
+{
+ char path[PATH_MAX + 1];
+
+ if (getfdpath(tcp, fd, path, sizeof(path)) >= 0) {
+ const char *str = STR_STRIP_PREFIX(path, "socket:[");
+
+ if (str != path) {
+ const size_t str_len = strlen(str);
+ if (str_len && str[str_len - 1] == ']')
+ return strtoul(str, NULL, 10);
+ }
+ }
+
+ return 0;
+}
+
void
printfd(struct tcb *tcp, int fd)
{
char path[PATH_MAX + 1];
if (show_fd_path && getfdpath(tcp, fd, path, sizeof(path)) >= 0) {
- static const char socket_prefix[] = "socket:[";
- const size_t socket_prefix_len = sizeof(socket_prefix) - 1;
- const size_t path_len = strlen(path);
+ const char *str;
+ size_t len;
+ unsigned long inode;
tprintf("%d<", fd);
- if (show_fd_path > 1 &&
- strncmp(path, socket_prefix, socket_prefix_len) == 0 &&
- path[path_len - 1] == ']') {
- unsigned long inode =
- strtoul(path + socket_prefix_len, NULL, 10);
-
- if (!print_sockaddr_by_inode_cached(inode)) {
- const enum sock_proto proto =
- getfdproto(tcp, fd);
- if (!print_sockaddr_by_inode(inode, proto))
- tprints(path);
- }
- } else {
- print_quoted_string(path, path_len,
+ if (show_fd_path <= 1
+ || (str = STR_STRIP_PREFIX(path, "socket:[")) == path
+ || !(len = strlen(str))
+ || str[len - 1] != ']'
+ || !(inode = strtoul(str, NULL, 10))
+ || !print_sockaddr_by_inode(tcp, fd, inode)) {
+ print_quoted_string(path, strlen(path),
QUOTE_OMIT_LEADING_TRAILING_QUOTES);
}
tprints(">");
eol = 0x100; /* this can never match a char */
usehex = 0;
- if (xflag > 1)
+ if ((xflag > 1) || (style & QUOTE_FORCE_HEX)) {
usehex = 1;
- else if (xflag) {
+ } else if (xflag) {
/* Check for presence of symbol which require
to hex-quote the whole string. */
for (i = 0; i < size; ++i) {
}
/* Cap path length to the path buffer size */
- if (n > sizeof path - 1)
- n = sizeof path - 1;
+ if (n > sizeof(path) - 1)
+ n = sizeof(path) - 1;
/* Fetch one byte more to find out whether path length > n. */
nul_seen = umovestr(tcp, addr, n + 1, path);
printstr_ex(struct tcb *const tcp, const kernel_ulong_t addr,
const kernel_ulong_t len, const unsigned int user_style)
{
- static char *str = NULL;
+ static char *str;
static char *outstr;
+
unsigned int size;
unsigned int style = user_style;
int rc;
}
/* Allocate static buffers if they are not allocated yet. */
if (!str) {
- unsigned int outstr_size = 4 * max_strlen + /*for quotes and NUL:*/ 3;
+ const unsigned int outstr_size =
+ 4 * max_strlen + /* for quotes and NUL */ 3;
+ /*
+ * We can assume that outstr_size / 4 == max_strlen
+ * since we have a guarantee that max_strlen <= -1U / 4.
+ */
- if (outstr_size / 4 != max_strlen)
- die_out_of_memory();
str = xmalloc(max_strlen + 1);
outstr = xmalloc(outstr_size);
}
dumpiov_upto(struct tcb *const tcp, const int len, const kernel_ulong_t addr,
kernel_ulong_t data_size)
{
-#if SUPPORTED_PERSONALITIES > 1
+#if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
union {
struct { uint32_t base; uint32_t len; } *iov32;
struct { uint64_t base; uint64_t len; } *iov64;
if (i < len) {
*dst++ = "0123456789abcdef"[*src >> 4];
*dst++ = "0123456789abcdef"[*src & 0xf];
- }
- else {
+ } else {
*dst++ = ' ';
*dst++ = ' ';
}
}
}
-#ifdef HAVE_PROCESS_VM_READV
-/* C library supports this, but the kernel might not. */
-static bool process_vm_readv_not_supported = 0;
-#else
+static bool process_vm_readv_not_supported;
-/* Need to do this since process_vm_readv() is not yet available in libc.
+#ifndef HAVE_PROCESS_VM_READV
+/*
+ * Need to do this since process_vm_readv() is not yet available in libc.
* When libc is be updated, only "static bool process_vm_readv_not_supported"
* line should remain.
*/
-#if !defined(__NR_process_vm_readv)
-# if defined(I386)
-# define __NR_process_vm_readv 347
-# elif defined(X86_64)
-# define __NR_process_vm_readv 310
-# elif defined(POWERPC)
-# define __NR_process_vm_readv 351
-# endif
-#endif
-
-#if defined(__NR_process_vm_readv)
-static bool process_vm_readv_not_supported = 0;
/* Have to avoid duplicating with the C library headers. */
static ssize_t strace_process_vm_readv(pid_t pid,
const struct iovec *lvec,
{
return syscall(__NR_process_vm_readv, (long)pid, lvec, liovcnt, rvec, riovcnt, flags);
}
-#define process_vm_readv strace_process_vm_readv
-#else
-static bool process_vm_readv_not_supported = 1;
-# define process_vm_readv(...) (errno = ENOSYS, -1)
-#endif
-
-#endif /* end of hack */
+# define process_vm_readv strace_process_vm_readv
+#endif /* !HAVE_PROCESS_VM_READV */
static ssize_t
vm_read_mem(const pid_t pid, void *const laddr,
char x[sizeof(long)];
} u;
-#if SIZEOF_KERNEL_LONG_T > 4 \
- && (SIZEOF_LONG < SIZEOF_KERNEL_LONG_T || !defined current_wordsize)
+#if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
if (current_wordsize < sizeof(addr)
- && (addr & (~ (kernel_ulong_t) -1U))) {
+ && (addr & (~(kernel_ulong_t) -1U))) {
return -1;
}
#endif
char x[sizeof(long)];
} u;
-#if SIZEOF_KERNEL_LONG_T > 4 \
- && (SIZEOF_LONG < SIZEOF_KERNEL_LONG_T || !defined current_wordsize)
+#if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
if (current_wordsize < sizeof(addr)
- && (addr & (~ (kernel_ulong_t) -1U))) {
+ && (addr & (~(kernel_ulong_t) -1U))) {
return -1;
}
#endif
return RVAL_DECODED;
}
+/* Print abnormal high bits of a kernel_ulong_t value. */
+void
+print_abnormal_hi(const kernel_ulong_t val)
+{
+ if (current_klongsize > 4) {
+ const unsigned int hi = (unsigned int) ((uint64_t) val >> 32);
+ if (hi)
+ tprintf("%#x<<32|", hi);
+ }
+}
+
#if defined _LARGEFILE64_SOURCE && defined HAVE_OPEN64
# define open_file open64
#else