globals.c revision d29b2c4438482eb00488be49a1f5d6835f455546
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <strings.h>
#include <sys/machelf.h>
#include "_conv.h"
#include "globals_msg.h"
/*
* Given an integer value, generate an ASCII representation of it.
*
* entry:
* inv_buf - Buffer into which the resulting string is generated.
* value - Value to be formatted.
* fmt_flags - CONV_FMT_* values, used to specify formatting details.
*
* exit:
* The formatted string is placed into inv_buf. The pointer
* to the string is returned.
*/
const char *
conv_invalid_val(Conv_inv_buf_t *inv_buf, Xword value,
Conv_fmt_flags_t fmt_flags)
{
const char *fmt;
if (fmt_flags & CONV_FMT_DECIMAL) {
if (fmt_flags & CONV_FMT_SPACE)
fmt = MSG_ORIG(MSG_GBL_FMT_DECS);
else
fmt = MSG_ORIG(MSG_GBL_FMT_DEC);
} else {
if (fmt_flags & CONV_FMT_SPACE)
fmt = MSG_ORIG(MSG_GBL_FMT_HEXS);
else
fmt = MSG_ORIG(MSG_GBL_FMT_HEX);
}
(void) snprintf(inv_buf->buf, sizeof (inv_buf->buf), fmt, value);
return ((const char *)inv_buf->buf);
}
/*
* cef_cp() is used by conv_expn_field() to fill in the output buffer.
* A CONV_EXPN_FIELD_STATE variable is used to maintain the buffer state
* as the operation progresses.
*
* entry:
* arg - As passed to conv_expn_field().
* state - Variable used to maintain buffer state between calls.
* list_item - TRUE(1) if this is a list item, and FALSE(0)
* if it is something else.
* str - String to be added to the buffer.
*
* exit:
* On Success:
* buffer contains the output string, including a list
* separator if appropriate. state has been updated.
* TRUE(1) is returned.
* On Failure:
* Buffer contains the numeric representation for the flags,
* and FALSE(0) is returned.
*/
typedef struct {
char *cur; /* Current output position in buf */
size_t room; /* # of bytes left in buf */
int list_cnt; /* # of list items output into buf */
const char *sep_str; /* String used as list separator */
int sep_str_len; /* strlen(sep_str) */
} CONV_EXPN_FIELD_STATE;
static int
cef_cp(CONV_EXPN_FIELD_ARG *arg, CONV_EXPN_FIELD_STATE *state,
int list_item, const char *str)
{
Conv_inv_buf_t inv_buf;
int n;
if (list_item) { /* This is a list item */
/*
* If list is non-empty, and the buffer has room,
* then insert the separator.
*/
if (state->list_cnt != 0) {
if (state->sep_str_len < state->room) {
(void) memcpy(state->cur, state->sep_str,
state->sep_str_len);
state->cur += state->sep_str_len;
state->room -= state->sep_str_len;
} else {
/* Ensure code below will catch lack of room */
state->room = 0;
}
}
state->list_cnt++;
}
n = strlen(str);
if (n < state->room) {
(void) memcpy(state->cur, str, n);
state->cur += n;
state->room -= n;
return (TRUE);
}
/* Buffer too small. Fill in the numeric value and report failure */
(void) conv_invalid_val(&inv_buf, arg->oflags, 0);
(void) strlcpy(arg->buf, inv_buf.buf, arg->bufsize);
return (FALSE);
}
/*
* Provide a focal point for expanding bit-fields values into
* their corresponding strings.
*
* entry:
* arg - Specifies the operation to be carried out. See the
* definition of CONV_EXPN_FIELD_ARG in conv.h for details.
*
* exit:
* arg->buf contains the formatted result. True (1) is returned if there
* was no error, and False (0) if the buffer was too small. In the failure
* case, arg->buf contains a numeric representation of the value.
*/
int
conv_expn_field(CONV_EXPN_FIELD_ARG *arg, Conv_fmt_flags_t fmt_flags)
{
const Val_desc *vde;
CONV_EXPN_FIELD_STATE state;
Xword rflags = arg->rflags;
const char **lead_str;
/* Initialize buffer state */
state.cur = arg->buf;
state.room = arg->bufsize;
state.list_cnt = 0;
state.sep_str = arg->sep ? arg->sep : MSG_ORIG(MSG_GBL_SEP);
state.sep_str_len = strlen(state.sep_str);
/* Prefix string */
if ((fmt_flags & CONV_FMT_NOBKT) == 0)
if (!cef_cp(arg, &state, FALSE,
(arg->prefix ? arg->prefix : MSG_ORIG(MSG_GBL_OSQBRKT))))
return (FALSE);
/* Any strings in the lead_str array go at the head of the list */
lead_str = arg->lead_str;
if (lead_str) {
while (*lead_str) {
if (!cef_cp(arg, &state, TRUE, *lead_str++))
return (FALSE);
}
}
/*
* Traverse the callers Val_desc array and determine if the value
* corresponds to any array item and add those that are to the list.
*/
for (vde = arg->vdp; vde->v_msg; vde++) {
if (arg->oflags & vde->v_val) {
if (!cef_cp(arg, &state, TRUE, vde->v_msg))
return (FALSE);
/* Indicate this item has been collected */
rflags &= ~(vde->v_val);
}
}
/*
* If any flags remain, then they are unidentified. Add the numeric
* representation of these flags to the users output buffer.
*/
if (rflags) {
Conv_inv_buf_t inv_buf;
(void) conv_invalid_val(&inv_buf, rflags, fmt_flags);
if (!cef_cp(arg, &state, TRUE, inv_buf.buf))
return (FALSE);
}
/* Suffix string */
if ((fmt_flags & CONV_FMT_NOBKT) == 0)
if (!cef_cp(arg, &state, FALSE,
(arg->suffix ? arg->suffix : MSG_ORIG(MSG_GBL_CSQBRKT))))
return (FALSE);
/* Terminate the buffer */
*state.cur = '\0';
return (TRUE);
}