__bitmap_parselist
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Name

__bitmap_parselist — convert list format ASCII string to bitmap

Synopsis

int __bitmap_parselist (const char * buf,
 unsigned int buflen,
 int is_user,
 unsigned long * maskp,
 int nmaskbits);
 

Arguments

buf

read nul-terminated user string from this buffer

buflen

buffer size in bytes. If string is smaller than this then it must be terminated with a \0.

is_user

location of buffer, 0 indicates kernel space

maskp

write resulting mask here

nmaskbits

number of bits in mask to be written

Description

Input format is a comma-separated list of decimal numbers and ranges. Consecutively set bits are shown as two hyphen-separated decimal numbers, the smallest and largest bit numbers set in the range.

Returns 0 on success, -errno on invalid input strings.

Error values

-EINVAL: second number in range smaller than first -EINVAL: invalid character in string -ERANGE: bit number specified too large for mask

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