mirror of
https://git.FreeBSD.org/src.git
synced 2024-10-18 02:19:39 +00:00
libsysdecode: For future use extract common code to a separate files
Reviewed by: jhb, emaste Differential revision: https://reviews.freebsd.org/D35353 MFC after: 2 weeks
This commit is contained in:
Dmitry Chagin
parent
4f1d91e413
commit
9dac609629
@ -4,7 +4,7 @@
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LIB= sysdecode
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SRCS= errno.c flags.c ioctl.c signal.c syscallnames.c utrace.c
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SRCS= errno.c flags.c ioctl.c signal.c syscallnames.c utrace.c support.c
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INCS= sysdecode.h
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CFLAGS+= -I${.OBJDIR}
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@ -71,14 +71,7 @@ __FBSDID("$FreeBSD$");
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#include <netgraph/bluetooth/include/ng_l2cap.h>
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#include <netgraph/bluetooth/include/ng_btsocket.h>
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/*
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* This is taken from the xlat tables originally in truss which were
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* in turn taken from strace.
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*/
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struct name_table {
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uintmax_t val;
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const char *str;
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};
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#include "support.h"
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#define X(a) { a, #a },
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#define XEND { 0, NULL }
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@ -93,156 +86,6 @@ struct name_table {
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#undef TABLE_ENTRY
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#undef TABLE_END
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/*
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* These are simple support macros. print_or utilizes a variable
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* defined in the calling function to track whether or not it should
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* print a logical-OR character ('|') before a string. if_print_or
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* simply handles the necessary "if" statement used in many lines
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* of this file.
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*/
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#define print_or(fp,str,orflag) do { \
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if (orflag) fputc(fp, '|'); else orflag = true; \
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fprintf(fp, str); } \
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while (0)
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#define if_print_or(fp,i,flag,orflag) do { \
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if ((i & flag) == flag) \
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print_or(fp,#flag,orflag); } \
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while (0)
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static const char *
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lookup_value(struct name_table *table, uintmax_t val)
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{
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for (; table->str != NULL; table++)
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if (table->val == val)
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return (table->str);
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return (NULL);
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}
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/*
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* Used when the value maps to a bitmask of #definition values in the
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* table. This is a helper routine which outputs a symbolic mask of
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* matched masks. Multiple masks are separated by a pipe ('|').
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* The value is modified on return to only hold unmatched bits.
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*/
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static void
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print_mask_part(FILE *fp, struct name_table *table, uintmax_t *valp,
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bool *printed)
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{
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uintmax_t rem;
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rem = *valp;
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for (; table->str != NULL; table++) {
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if ((table->val & rem) == table->val) {
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/*
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* Only print a zero mask if the raw value is
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* zero.
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*/
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if (table->val == 0 && *valp != 0)
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continue;
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fprintf(fp, "%s%s", *printed ? "|" : "", table->str);
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*printed = true;
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rem &= ~table->val;
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}
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}
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*valp = rem;
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}
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/*
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* Used when the value maps to a bitmask of #definition values in the
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* table. The return value is true if something was printed. If
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* rem is not NULL, *rem holds any bits not decoded if something was
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* printed. If nothing was printed and rem is not NULL, *rem holds
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* the original value.
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*/
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static bool
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print_mask_int(FILE *fp, struct name_table *table, int ival, int *rem)
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{
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uintmax_t val;
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bool printed;
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printed = false;
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val = (unsigned)ival;
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print_mask_part(fp, table, &val, &printed);
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if (rem != NULL)
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*rem = val;
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return (printed);
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}
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/*
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* Used for a mask of optional flags where a value of 0 is valid.
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*/
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static bool
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print_mask_0(FILE *fp, struct name_table *table, int val, int *rem)
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{
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if (val == 0) {
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fputs("0", fp);
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if (rem != NULL)
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*rem = 0;
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return (true);
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}
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return (print_mask_int(fp, table, val, rem));
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}
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/*
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* Like print_mask_0 but for a unsigned long instead of an int.
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*/
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static bool
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print_mask_0ul(FILE *fp, struct name_table *table, u_long lval, u_long *rem)
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{
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uintmax_t val;
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bool printed;
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if (lval == 0) {
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fputs("0", fp);
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if (rem != NULL)
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*rem = 0;
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return (true);
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}
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printed = false;
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val = lval;
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print_mask_part(fp, table, &val, &printed);
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if (rem != NULL)
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*rem = val;
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return (printed);
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}
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static void
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print_integer(FILE *fp, int val, int base)
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{
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switch (base) {
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case 8:
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fprintf(fp, "0%o", val);
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break;
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case 10:
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fprintf(fp, "%d", val);
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break;
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case 16:
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fprintf(fp, "0x%x", val);
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break;
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default:
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abort2("bad base", 0, NULL);
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break;
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}
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}
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static bool
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print_value(FILE *fp, struct name_table *table, uintmax_t val)
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{
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const char *str;
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str = lookup_value(table, val);
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if (str != NULL) {
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fputs(str, fp);
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return (true);
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}
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return (false);
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}
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const char *
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sysdecode_atfd(int fd)
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{
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168
lib/libsysdecode/support.c
Normal file
168
lib/libsysdecode/support.c
Normal file
@ -0,0 +1,168 @@
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/*
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* Copyright (c) 2006 "David Kirchner" <dpk@dpk.net>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "support.h"
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const char *
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lookup_value(struct name_table *table, uintmax_t val)
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{
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for (; table->str != NULL; table++)
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if (table->val == val)
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return (table->str);
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return (NULL);
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}
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/*
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* Used when the value maps to a bitmask of #definition values in the
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* table. This is a helper routine which outputs a symbolic mask of
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* matched masks. Multiple masks are separated by a pipe ('|').
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* The value is modified on return to only hold unmatched bits.
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*/
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void
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print_mask_part(FILE *fp, struct name_table *table, uintmax_t *valp,
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bool *printed)
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{
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uintmax_t rem;
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rem = *valp;
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for (; table->str != NULL; table++) {
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if ((table->val & rem) == table->val) {
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/*
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* Only print a zero mask if the raw value is
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* zero.
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*/
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if (table->val == 0 && *valp != 0)
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continue;
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fprintf(fp, "%s%s", *printed ? "|" : "", table->str);
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*printed = true;
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rem &= ~table->val;
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}
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}
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*valp = rem;
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}
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/*
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* Used when the value maps to a bitmask of #definition values in the
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* table. The return value is true if something was printed. If
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* rem is not NULL, *rem holds any bits not decoded if something was
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* printed. If nothing was printed and rem is not NULL, *rem holds
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* the original value.
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*/
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bool
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print_mask_int(FILE *fp, struct name_table *table, int ival, int *rem)
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{
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uintmax_t val;
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bool printed;
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printed = false;
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val = (unsigned)ival;
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print_mask_part(fp, table, &val, &printed);
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if (rem != NULL)
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*rem = val;
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return (printed);
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}
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/*
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* Used for a mask of optional flags where a value of 0 is valid.
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*/
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bool
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print_mask_0(FILE *fp, struct name_table *table, int val, int *rem)
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{
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if (val == 0) {
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fputs("0", fp);
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if (rem != NULL)
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*rem = 0;
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return (true);
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}
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return (print_mask_int(fp, table, val, rem));
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}
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/*
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* Like print_mask_0 but for a unsigned long instead of an int.
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*/
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bool
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print_mask_0ul(FILE *fp, struct name_table *table, u_long lval, u_long *rem)
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{
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uintmax_t val;
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bool printed;
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if (lval == 0) {
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fputs("0", fp);
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if (rem != NULL)
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*rem = 0;
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return (true);
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}
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printed = false;
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val = lval;
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print_mask_part(fp, table, &val, &printed);
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if (rem != NULL)
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*rem = val;
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return (printed);
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}
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void
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print_integer(FILE *fp, int val, int base)
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{
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switch (base) {
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case 8:
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fprintf(fp, "0%o", val);
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break;
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case 10:
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fprintf(fp, "%d", val);
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break;
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case 16:
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fprintf(fp, "0x%x", val);
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break;
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default:
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abort2("bad base", 0, NULL);
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break;
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}
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}
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bool
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print_value(FILE *fp, struct name_table *table, uintmax_t val)
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{
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const char *str;
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str = lookup_value(table, val);
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if (str != NULL) {
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fputs(str, fp);
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return (true);
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}
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return (false);
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}
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62
lib/libsysdecode/support.h
Normal file
62
lib/libsysdecode/support.h
Normal file
@ -0,0 +1,62 @@
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/*
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* Copyright (c) 2006 "David Kirchner" <dpk@dpk.net>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __SYSDECODE_SUPPORT_H__
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#define __SYSDECODE_SUPPORT_H__
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/*
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* This is taken from the xlat tables originally in truss which were
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* in turn taken from strace.
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*/
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struct name_table {
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uintmax_t val;
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const char *str;
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};
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/*
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* These are simple support macros. print_or utilizes a variable
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* defined in the calling function to track whether or not it should
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* print a logical-OR character ('|') before a string. if_print_or
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* simply handles the necessary "if" statement used in many lines
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* of this file.
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*/
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#define print_or(fp,str,orflag) do { \
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if (orflag) fputc(fp, '|'); else orflag = true; \
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fprintf(fp, str); } \
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while (0)
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#define if_print_or(fp,i,flag,orflag) do { \
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if ((i & flag) == flag) \
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print_or(fp,#flag,orflag); } \
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while (0)
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const char *lookup_value(struct name_table *, uintmax_t);
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void print_integer(FILE *, int, int);
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bool print_mask_0(FILE *, struct name_table *, int, int *);
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bool print_mask_0ul(FILE *, struct name_table *, u_long, u_long *);
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bool print_mask_int(FILE *, struct name_table *, int, int *);
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void print_mask_part(FILE *, struct name_table *, uintmax_t *, bool *);
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bool print_value(FILE *, struct name_table *, uintmax_t);
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#endif /* !__SYSDECODE_SUPPORT_H__ */
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