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sfdisk: introduce get_ull() function 

Signed-off-by: Petr Uzel <petr.uzel@suse.cz>
This commit is contained in:
Petr Uzel 2011-09-19 15:29:13 +02:00 committed by Karel Zak
parent c4730f108e
commit b7767afc63
1 changed files with 38 additions and 0 deletions
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38
fdisk/sfdisk.c
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@ -1861,6 +1861,44 @@ get_ul(char *u, unsigned long *up, unsigned long def, int base) {
return 0;
}
/* read a number, use default if absent */
/* a sign gives an offset from the default */
static int
get_ull(char *u, unsigned long long *up, unsigned long long def, int base) {
char *nu;
int sign = 0;
unsigned long long val;
if (*u == '+') {
sign = 1;
u++;
} else if (*u == '-') {
sign = -1;
u++;
}
if (*u) {
errno = 0;
val = strtoull(u, &nu, base);
if (errno == ERANGE) {
do_warn(_("number too big\n"));
return -1;
}
if (*nu) {
do_warn(_("trailing junk after number\n"));
return -1;
}
if (sign == 1)
val = def + val;
else if (sign == -1)
val = def - val;
*up = val;
} else
*up = def;
return 0;
}
/* There are two common ways to structure extended partitions:
as nested boxes, and as a chain. Sometimes the partitions
must be given in order. Sometimes all logical partitions