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Cleanup: Remove unused uu_pname code

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Coverity caught a possible NULL pointer dereference in dead code. We can
delete it all.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Chunwei Chen <david.chen@nutanix.com>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #13900
This commit is contained in:
Richard Yao 2022-09-19 20:33:52 -04:00 committed by GitHub
parent f272960d52
commit e8bdc74528
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 0 additions and 309 deletions
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33
include/libuutil.h
View File

@ -56,13 +56,6 @@ extern "C" {
#define UU_ERROR_SYSTEM 99 /* underlying system error */
#define UU_ERROR_UNKNOWN 100 /* error status not known */
/*
* Standard program exit codes.
*/
#define UU_EXIT_OK (*(uu_exit_ok()))
#define UU_EXIT_FATAL (*(uu_exit_fatal()))
#define UU_EXIT_USAGE (*(uu_exit_usage()))
/*
* Exit status profiles.
*/
@ -75,32 +68,6 @@ extern "C" {
uint32_t uu_error(void);
const char *uu_strerror(uint32_t);
/*
* Program notification functions.
*/
extern void uu_alt_exit(int);
extern const char *uu_setpname(char *);
extern const char *uu_getpname(void);
extern void uu_warn(const char *, ...)
__attribute__((format(printf, 1, 2)));
extern void uu_vwarn(const char *, va_list)
__attribute__((format(printf, 1, 0)));
extern __attribute__((noreturn)) void uu_die(const char *, ...)
__attribute__((format(printf, 1, 2)));
extern __attribute__((noreturn)) void uu_vdie(const char *, va_list)
__attribute__((format(printf, 1, 0)));
extern __attribute__((noreturn)) void uu_xdie(int, const char *, ...)
__attribute__((format(printf, 2, 3)));
extern __attribute__((noreturn)) void uu_vxdie(int, const char *, va_list)
__attribute__((format(printf, 2, 0)));
/*
* Exit status functions (not to be used directly)
*/
extern int *uu_exit_ok(void);
extern int *uu_exit_fatal(void);
extern int *uu_exit_usage(void);
/*
* Identifier test flags and function.
*/

1
lib/libuutil/Makefile.am
View File

@ -9,7 +9,6 @@ libuutil_la_SOURCES = \
%D%/uu_ident.c \
%D%/uu_list.c \
%D%/uu_misc.c \
%D%/uu_pname.c \
%D%/uu_string.c
libuutil_la_LIBADD = \

73
lib/libuutil/libuutil.abi
View File

@ -1744,79 +1744,6 @@
<return type-id='48b5725f'/>
</function-decl>
</abi-instr>
<abi-instr address-size='64' path='uu_pname.c' language='LANG_C99'>
<class-decl name='__va_list_tag' size-in-bits='192' is-struct='yes' visibility='default' id='d5027220'>
<data-member access='public' layout-offset-in-bits='0'>
<var-decl name='gp_offset' type-id='f0981eeb' visibility='default'/>
</data-member>
<data-member access='public' layout-offset-in-bits='32'>
<var-decl name='fp_offset' type-id='f0981eeb' visibility='default'/>
</data-member>
<data-member access='public' layout-offset-in-bits='64'>
<var-decl name='overflow_arg_area' type-id='eaa32e2f' visibility='default'/>
</data-member>
<data-member access='public' layout-offset-in-bits='128'>
<var-decl name='reg_save_area' type-id='eaa32e2f' visibility='default'/>
</data-member>
</class-decl>
<pointer-type-def type-id='d5027220' size-in-bits='64' id='b7f2d5e6'/>
<pointer-type-def type-id='95e97e5e' size-in-bits='64' id='7292109c'/>
<var-decl name='uu_exit_ok_value' type-id='95e97e5e' mangled-name='uu_exit_ok_value' visibility='default' elf-symbol-id='uu_exit_ok_value'/>
<var-decl name='uu_exit_fatal_value' type-id='95e97e5e' mangled-name='uu_exit_fatal_value' visibility='default' elf-symbol-id='uu_exit_fatal_value'/>
<var-decl name='uu_exit_usage_value' type-id='95e97e5e' mangled-name='uu_exit_usage_value' visibility='default' elf-symbol-id='uu_exit_usage_value'/>
<function-decl name='uu_exit_ok' mangled-name='uu_exit_ok' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_exit_ok'>
<return type-id='7292109c'/>
</function-decl>
<function-decl name='uu_exit_fatal' mangled-name='uu_exit_fatal' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_exit_fatal'>
<return type-id='7292109c'/>
</function-decl>
<function-decl name='uu_exit_usage' mangled-name='uu_exit_usage' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_exit_usage'>
<return type-id='7292109c'/>
</function-decl>
<function-decl name='uu_alt_exit' mangled-name='uu_alt_exit' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_alt_exit'>
<parameter type-id='95e97e5e' name='profile'/>
<return type-id='48b5725f'/>
</function-decl>
<function-decl name='uu_vwarn' mangled-name='uu_vwarn' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_vwarn'>
<parameter type-id='80f4b756' name='format'/>
<parameter type-id='b7f2d5e6' name='alist'/>
<return type-id='48b5725f'/>
</function-decl>
<function-decl name='uu_warn' mangled-name='uu_warn' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_warn'>
<parameter type-id='80f4b756' name='format'/>
<parameter is-variadic='yes'/>
<return type-id='48b5725f'/>
</function-decl>
<function-decl name='uu_vdie' mangled-name='uu_vdie' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_vdie'>
<parameter type-id='80f4b756' name='format'/>
<parameter type-id='b7f2d5e6' name='alist'/>
<return type-id='48b5725f'/>
</function-decl>
<function-decl name='uu_die' mangled-name='uu_die' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_die'>
<parameter type-id='80f4b756' name='format'/>
<parameter is-variadic='yes'/>
<return type-id='48b5725f'/>
</function-decl>
<function-decl name='uu_vxdie' mangled-name='uu_vxdie' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_vxdie'>
<parameter type-id='95e97e5e' name='status'/>
<parameter type-id='80f4b756' name='format'/>
<parameter type-id='b7f2d5e6' name='alist'/>
<return type-id='48b5725f'/>
</function-decl>
<function-decl name='uu_xdie' mangled-name='uu_xdie' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_xdie'>
<parameter type-id='95e97e5e' name='status'/>
<parameter type-id='80f4b756' name='format'/>
<parameter is-variadic='yes'/>
<return type-id='48b5725f'/>
</function-decl>
<function-decl name='uu_setpname' mangled-name='uu_setpname' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_setpname'>
<parameter type-id='26a90f95' name='arg0'/>
<return type-id='80f4b756'/>
</function-decl>
<function-decl name='uu_getpname' mangled-name='uu_getpname' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='uu_getpname'>
<return type-id='80f4b756'/>
</function-decl>
</abi-instr>
<abi-instr address-size='64' path='uu_string.c' language='LANG_C99'>
<type-decl name='unnamed-enum-underlying-type-32' is-anonymous='yes' size-in-bits='32' alignment-in-bits='32' id='9cac1fee'/>
<enum-decl name='boolean_t' naming-typedef-id='c19b74c3' id='f58c8277'>

202
lib/libuutil/uu_pname.c
View File

@ -1,202 +0,0 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 https://opensource.org/licenses/CDDL-1.0.
* 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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include "libuutil_common.h"
#include <libintl.h>
#include <limits.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <errno.h>
#include <wchar.h>
#include <unistd.h>
static const char *pname;
static __attribute__((noreturn)) void
uu_die_internal(int status, const char *format, va_list alist);
int uu_exit_ok_value = EXIT_SUCCESS;
int uu_exit_fatal_value = EXIT_FAILURE;
int uu_exit_usage_value = 2;
int *
uu_exit_ok(void)
{
return (&uu_exit_ok_value);
}
int *
uu_exit_fatal(void)
{
return (&uu_exit_fatal_value);
}
int *
uu_exit_usage(void)
{
return (&uu_exit_usage_value);
}
void
uu_alt_exit(int profile)
{
switch (profile) {
case UU_PROFILE_DEFAULT:
uu_exit_ok_value = EXIT_SUCCESS;
uu_exit_fatal_value = EXIT_FAILURE;
uu_exit_usage_value = 2;
break;
case UU_PROFILE_LAUNCHER:
uu_exit_ok_value = EXIT_SUCCESS;
uu_exit_fatal_value = 124;
uu_exit_usage_value = 125;
break;
}
}
static __attribute__((format(printf, 2, 0))) void
uu_warn_internal(int err, const char *format, va_list alist)
{
if (pname != NULL)
(void) fprintf(stderr, "%s: ", pname);
if (format != NULL)
(void) vfprintf(stderr, format, alist);
if (strrchr(format, '\n') == NULL)
(void) fprintf(stderr, ": %s\n", strerror(err));
}
void
uu_vwarn(const char *format, va_list alist)
{
uu_warn_internal(errno, format, alist);
}
void
uu_warn(const char *format, ...)
{
va_list alist;
va_start(alist, format);
uu_warn_internal(errno, format, alist);
va_end(alist);
}
static __attribute__((format(printf, 2, 0))) __attribute__((noreturn)) void
uu_die_internal(int status, const char *format, va_list alist)
{
uu_warn_internal(errno, format, alist);
#ifdef DEBUG
{
char *cp;
if (!issetugid()) {
cp = getenv("UU_DIE_ABORTS");
if (cp != NULL && *cp != '\0')
abort();
}
}
#endif
exit(status);
}
void
uu_vdie(const char *format, va_list alist)
{
uu_die_internal(UU_EXIT_FATAL, format, alist);
}
void
uu_die(const char *format, ...)
{
va_list alist;
va_start(alist, format);
uu_die_internal(UU_EXIT_FATAL, format, alist);
va_end(alist);
}
void
uu_vxdie(int status, const char *format, va_list alist)
{
uu_die_internal(status, format, alist);
}
void
uu_xdie(int status, const char *format, ...)
{
va_list alist;
va_start(alist, format);
uu_die_internal(status, format, alist);
va_end(alist);
}
const char *
uu_setpname(char *arg0)
{
/*
* Having a NULL argv[0], while uncommon, is possible. It
* makes more sense to handle this event in uu_setpname rather
* than in each of its consumers.
*/
if (arg0 == NULL) {
pname = getexecname();
if (pname == NULL)
pname = "unknown_command";
return (pname);
}
/*
* Guard against '/' at end of command invocation.
*/
for (;;) {
char *p = strrchr(arg0, '/');
if (p == NULL) {
pname = arg0;
break;
} else {
if (*(p + 1) == '\0') {
*p = '\0';
continue;
}
pname = p + 1;
break;
}
}
return (pname);
}
const char *
uu_getpname(void)
{
return (pname);
}