table of contents
| __BITMAP_PARSELIST(9) | Basic Kernel Library Functions | __BITMAP_PARSELIST(9) |
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
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |