diff options
| -rw-r--r-- | include/linux/string_helpers.h | 1 | ||||
| -rw-r--r-- | lib/string_helpers.c | 39 |
2 files changed, 22 insertions, 18 deletions
diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h index e93fbb5b0c01..3fb88a1e9898 100644 --- a/include/linux/string_helpers.h +++ b/include/linux/string_helpers.h @@ -31,6 +31,7 @@ enum string_size_units { int string_get_size(u64 size, u64 blk_size, const enum string_size_units units, char *buf, int len); +int parse_int_array(const char *buf, size_t count, int **array); int parse_int_array_user(const char __user *from, size_t count, int **array); #define UNESCAPE_SPACE BIT(0) diff --git a/lib/string_helpers.c b/lib/string_helpers.c index 91fa37b5c510..ffb8ead6d4cd 100644 --- a/lib/string_helpers.c +++ b/lib/string_helpers.c @@ -138,6 +138,25 @@ int string_get_size(u64 size, u64 blk_size, const enum string_size_units units, } EXPORT_SYMBOL(string_get_size); +int parse_int_array(const char *buf, size_t count, int **array) +{ + int *ints, nints; + + get_options(buf, 0, &nints); + if (!nints) + return -ENOENT; + + ints = kcalloc(nints + 1, sizeof(*ints), GFP_KERNEL); + if (!ints) + return -ENOMEM; + + get_options(buf, nints + 1, ints); + *array = ints; + + return 0; +} +EXPORT_SYMBOL(parse_int_array); + /** * parse_int_array_user - Split string into a sequence of integers * @from: The user space buffer to read from @@ -153,30 +172,14 @@ EXPORT_SYMBOL(string_get_size); */ int parse_int_array_user(const char __user *from, size_t count, int **array) { - int *ints, nints; char *buf; - int ret = 0; + int ret; buf = memdup_user_nul(from, count); if (IS_ERR(buf)) return PTR_ERR(buf); - get_options(buf, 0, &nints); - if (!nints) { - ret = -ENOENT; - goto free_buf; - } - - ints = kcalloc(nints + 1, sizeof(*ints), GFP_KERNEL); - if (!ints) { - ret = -ENOMEM; - goto free_buf; - } - - get_options(buf, nints + 1, ints); - *array = ints; - -free_buf: + ret = parse_int_array(buf, count, array); kfree(buf); return ret; } |