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Define bb_xgetlarg as a standard interface for extracting
numbers from getopt which includes careful error checking. -Erik
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@ -121,6 +121,7 @@ int recursive_action(const char *fileName, int recurse, int followLinks, int dep
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void* userData);
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extern int parse_mode( const char* s, mode_t* theMode);
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extern long bb_xgetlarg(char *arg, int base, long lower, long upper);
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extern int get_kernel_revision(void);
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@ -43,7 +43,7 @@ LIBBB_SRC:= \
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setup_environment.c simplify_path.c syscalls.c syslog_msg_with_name.c \
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time_string.c trim.c u_signal_names.c vdprintf.c verror_msg.c \
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vherror_msg.c vperror_msg.c wfopen.c xconnect.c xgetcwd.c xfuncs.c \
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xgethostbyname.c xgethostbyname2.c xreadlink.c xregcomp.c
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xgethostbyname.c xgethostbyname2.c xreadlink.c xregcomp.c bb_xgetlarg.c
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LIBBB_OBJS=$(patsubst %.c,$(LIBBB_DIR)%.o, $(LIBBB_SRC))
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28
libbb/bb_xgetlarg.c
Normal file
28
libbb/bb_xgetlarg.c
Normal file
@ -0,0 +1,28 @@
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/* vi: set sw=4 ts=4: */
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/*
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* Copyright (C) 2003 Erik Andersen <andersee@debian.org>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include <errno.h>
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#include <assert.h>
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#include "busybox.h"
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extern long bb_xgetlarg(char *arg, int base, long lower, long upper)
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{
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long result;
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char *endptr;
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int errno_save = errno;
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assert(arg!=NULL);
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errno = 0;
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result = strtol(arg, &endptr, base);
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if (errno != 0 || *endptr!='\0' || result < lower || result > upper)
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show_usage();
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errno = errno_save;
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return result;
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}
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