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Format ttydev as (signed) long long, not unsigned.

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Now that we parse ttydev as a long long it makes more sense to
format it the same way.  This completely avoids the sign extension
issue on systems where dev_t is signed.
This commit is contained in:
Todd C. Miller 2024-08-14 07:53:00 -06:00
parent 6b90acbfb7
commit cc8c43c4d6
5 changed files with 7 additions and 58 deletions
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3
config.h.in
View File

@ -1293,9 +1293,6 @@
/* Define to 1 if you want sudo to set $HOME in shell mode. */
#undef SHELL_SETS_HOME
/* The size of 'dev_t', as computed by sizeof. */
#undef SIZEOF_DEV_T
/* The size of 'id_t', as computed by sizeof. */
#undef SIZEOF_ID_T

35
configure vendored
View File

@ -21003,41 +21003,6 @@ printf "%s\n" "$ac_cv_sizeof_long_long" >&6; }
printf "%s\n" "#define SIZEOF_LONG_LONG $ac_cv_sizeof_long_long" >>confdefs.h
# The cast to long int works around a bug in the HP C Compiler
# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
# declarations like 'int a3[[(sizeof (unsigned char)) >= 0]];'.
# This bug is HP SR number 8606223364.
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of dev_t" >&5
printf %s "checking size of dev_t... " >&6; }
if test ${ac_cv_sizeof_dev_t+y}
then :
printf %s "(cached) " >&6
else case e in #(
e) if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (dev_t))" "ac_cv_sizeof_dev_t" "$ac_includes_default"
then :
else case e in #(
e) if test "$ac_cv_type_dev_t" = yes; then
{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
as_fn_error 77 "cannot compute sizeof (dev_t)
See 'config.log' for more details" "$LINENO" 5; }
else
ac_cv_sizeof_dev_t=0
fi ;;
esac
fi
;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_dev_t" >&5
printf "%s\n" "$ac_cv_sizeof_dev_t" >&6; }
printf "%s\n" "#define SIZEOF_DEV_T $ac_cv_sizeof_dev_t" >>confdefs.h
# The cast to long int works around a bug in the HP C Compiler
# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
# declarations like 'int a3[[(sizeof (unsigned char)) >= 0]];'.

1
configure.ac
View File

@ -2507,7 +2507,6 @@ SUDO_SOCK_SA_LEN
SUDO_SOCK_SIN_LEN
AC_CHECK_SIZEOF([long])
AC_CHECK_SIZEOF([long long])
AC_CHECK_SIZEOF([dev_t])
AC_CHECK_SIZEOF([id_t])
AC_CHECK_SIZEOF([time_t])
AC_CHECK_SIZEOF([uid_t])

16
src/regress/ttyname/check_ttyname.c
View File

@ -1,7 +1,7 @@
/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2013-2020, 2022 Todd C. Miller <Todd.Miller@sudo.ws>
* Copyright (c) 2013-2020, 2022, 2024 Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -88,8 +88,7 @@ main(int argc, char *argv[])
/* Lookup tty name using kernel info if possible. */
ttydev = get_process_ttyname(pathbuf, sizeof(pathbuf));
if (ttydev != (dev_t)-1) {
char numbuf[STRLEN_MAX_UNSIGNED(unsigned long long) + 1];
unsigned long long ullval;
char numbuf[STRLEN_MAX_SIGNED(long long) + 1];
const char *errstr;
dev_t newdev;
@ -98,20 +97,15 @@ main(int argc, char *argv[])
/* Check that we can format a dev_t as a string and parse it. */
ntests++;
#if SIZEOF_DEV_T == SIZEOF_LONG
ullval = (unsigned long)ttydev;
#else
ullval = (unsigned long long)ttydev;
#endif
(void)snprintf(numbuf, sizeof(numbuf), "%llu", ullval);
(void)snprintf(numbuf, sizeof(numbuf), "%lld", (long long)ttydev);
newdev = sudo_strtonum(numbuf, LLONG_MIN, LLONG_MAX, &errstr);
if (errstr != NULL) {
printf("%s: FAIL unable to parse device number %s: %s",
getprogname(), numbuf, errstr);
errors++;
} else if (ttydev != newdev) {
printf("%s: FAIL device mismatch for %s, %s != %llu",
getprogname(), pathbuf, numbuf, ullval);
printf("%s: FAIL device mismatch for %s, %s != %lld",
getprogname(), pathbuf, numbuf, (long long)ttydev);
errors++;
}
}

10
src/sudo.c
View File

@ -1,7 +1,7 @@
/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2009-2023 Todd C. Miller <Todd.Miller@sudo.ws>
* Copyright (c) 2009-2024 Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -620,13 +620,7 @@ get_user_info(struct user_details *ud)
ttydev = get_process_ttyname(path, sizeof(path));
if (ttydev != (dev_t)-1) {
int len;
#if SIZEOF_DEV_T == SIZEOF_LONG
len = asprintf(&info[++i], "ttydev=%lu", (unsigned long)ttydev);
#else
len = asprintf(&info[++i], "ttydev=%llu", (unsigned long long)ttydev);
#endif
if (len == -1)
if (asprintf(&info[++i], "ttydev=%lld", (long long)ttydev) == -1)
goto oom;
info[++i] = sudo_new_key_val("tty", path);
if (info[i] == NULL)