diff options
author | Eric Andersen <andersen@codepoet.org> | 2003-03-07 20:29:12 +0300 |
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committer | Eric Andersen <andersen@codepoet.org> | 2003-03-07 20:29:12 +0300 |
commit | a9c6bc41e99e0c28d524060805429c7b742546a7 (patch) | |
tree | d22470e744557d02a92e205de822fd418d3190b1 /libbb | |
parent | bae7c1ac240211bd3183d48888708bfbc4f96a6d (diff) |
Define bb_xgetlarg as a standard interface for extracting
numbers from getopt which includes careful error checking.
-Erik
Diffstat (limited to 'libbb')
-rw-r--r-- | libbb/Makefile.in | 2 | ||||
-rw-r--r-- | libbb/bb_xgetlarg.c | 28 |
2 files changed, 29 insertions, 1 deletions
diff --git a/libbb/Makefile.in b/libbb/Makefile.in index 08f8028d9..09c629eca 100644 --- a/libbb/Makefile.in +++ b/libbb/Makefile.in @@ -43,7 +43,7 @@ LIBBB_SRC:= \ setup_environment.c simplify_path.c syscalls.c syslog_msg_with_name.c \ time_string.c trim.c u_signal_names.c vdprintf.c verror_msg.c \ vherror_msg.c vperror_msg.c wfopen.c xconnect.c xgetcwd.c xfuncs.c \ - xgethostbyname.c xgethostbyname2.c xreadlink.c xregcomp.c + xgethostbyname.c xgethostbyname2.c xreadlink.c xregcomp.c bb_xgetlarg.c LIBBB_OBJS=$(patsubst %.c,$(LIBBB_DIR)%.o, $(LIBBB_SRC)) diff --git a/libbb/bb_xgetlarg.c b/libbb/bb_xgetlarg.c new file mode 100644 index 000000000..598b0b3d6 --- /dev/null +++ b/libbb/bb_xgetlarg.c @@ -0,0 +1,28 @@ +/* vi: set sw=4 ts=4: */ +/* + * Copyright (C) 2003 Erik Andersen <andersee@debian.org> + */ + + +#include <stdio.h> +#include <stdlib.h> +#include <getopt.h> +#include <errno.h> +#include <assert.h> + +#include "busybox.h" + +extern long bb_xgetlarg(char *arg, int base, long lower, long upper) +{ + long result; + char *endptr; + int errno_save = errno; + + assert(arg!=NULL); + errno = 0; + result = strtol(arg, &endptr, base); + if (errno != 0 || *endptr!='\0' || result < lower || result > upper) + show_usage(); + errno = errno_save; + return result; +} |