Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
120
lib/cmdline.c
Normal file
120
lib/cmdline.c
Normal file
@@ -0,0 +1,120 @@
|
||||
/*
|
||||
* linux/lib/cmdline.c
|
||||
* Helper functions generally used for parsing kernel command line
|
||||
* and module options.
|
||||
*
|
||||
* Code and copyrights come from init/main.c and arch/i386/kernel/setup.c.
|
||||
*
|
||||
* This source code is licensed under the GNU General Public License,
|
||||
* Version 2. See the file COPYING for more details.
|
||||
*
|
||||
* GNU Indent formatting options for this file: -kr -i8 -npsl -pcs
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/string.h>
|
||||
|
||||
|
||||
/**
|
||||
* get_option - Parse integer from an option string
|
||||
* @str: option string
|
||||
* @pint: (output) integer value parsed from @str
|
||||
*
|
||||
* Read an int from an option string; if available accept a subsequent
|
||||
* comma as well.
|
||||
*
|
||||
* Return values:
|
||||
* 0 : no int in string
|
||||
* 1 : int found, no subsequent comma
|
||||
* 2 : int found including a subsequent comma
|
||||
*/
|
||||
|
||||
int get_option (char **str, int *pint)
|
||||
{
|
||||
char *cur = *str;
|
||||
|
||||
if (!cur || !(*cur))
|
||||
return 0;
|
||||
*pint = simple_strtol (cur, str, 0);
|
||||
if (cur == *str)
|
||||
return 0;
|
||||
if (**str == ',') {
|
||||
(*str)++;
|
||||
return 2;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/**
|
||||
* get_options - Parse a string into a list of integers
|
||||
* @str: String to be parsed
|
||||
* @nints: size of integer array
|
||||
* @ints: integer array
|
||||
*
|
||||
* This function parses a string containing a comma-separated
|
||||
* list of integers. The parse halts when the array is
|
||||
* full, or when no more numbers can be retrieved from the
|
||||
* string.
|
||||
*
|
||||
* Return value is the character in the string which caused
|
||||
* the parse to end (typically a null terminator, if @str is
|
||||
* completely parseable).
|
||||
*/
|
||||
|
||||
char *get_options(const char *str, int nints, int *ints)
|
||||
{
|
||||
int res, i = 1;
|
||||
|
||||
while (i < nints) {
|
||||
res = get_option ((char **)&str, ints + i);
|
||||
if (res == 0)
|
||||
break;
|
||||
i++;
|
||||
if (res == 1)
|
||||
break;
|
||||
}
|
||||
ints[0] = i - 1;
|
||||
return (char *)str;
|
||||
}
|
||||
|
||||
/**
|
||||
* memparse - parse a string with mem suffixes into a number
|
||||
* @ptr: Where parse begins
|
||||
* @retptr: (output) Pointer to next char after parse completes
|
||||
*
|
||||
* Parses a string into a number. The number stored at @ptr is
|
||||
* potentially suffixed with %K (for kilobytes, or 1024 bytes),
|
||||
* %M (for megabytes, or 1048576 bytes), or %G (for gigabytes, or
|
||||
* 1073741824). If the number is suffixed with K, M, or G, then
|
||||
* the return value is the number multiplied by one kilobyte, one
|
||||
* megabyte, or one gigabyte, respectively.
|
||||
*/
|
||||
|
||||
unsigned long long memparse (char *ptr, char **retptr)
|
||||
{
|
||||
unsigned long long ret = simple_strtoull (ptr, retptr, 0);
|
||||
|
||||
switch (**retptr) {
|
||||
case 'G':
|
||||
case 'g':
|
||||
ret <<= 10;
|
||||
case 'M':
|
||||
case 'm':
|
||||
ret <<= 10;
|
||||
case 'K':
|
||||
case 'k':
|
||||
ret <<= 10;
|
||||
(*retptr)++;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
EXPORT_SYMBOL(memparse);
|
||||
EXPORT_SYMBOL(get_option);
|
||||
EXPORT_SYMBOL(get_options);
|
||||
Reference in New Issue
Block a user