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authorEduardo Habkost <ehabkost@redhat.com>2013-02-04 16:27:45 -0200
committerAnthony Liguori <aliguori@us.ibm.com>2013-02-04 14:38:33 -0600
commite3f9fe2d404ca10153e95499ece111c077b6690a (patch)
tree1e7c9447e310d8ec6d1002f25dce0f25444b0ceb /include/qemu-common.h
parentff057ccb07f07ee8f34ae4104f7ba8c2dcbc3f9a (diff)
cutils: unsigned int parsing functions
There are lots of duplicate parsing code using strto*() in QEMU, and most of that code is broken in one way or another. Even the visitors code have duplicate integer parsing code[1]. This introduces functions to help parsing unsigned int values: parse_uint() and parse_uint_full(). Parsing functions for signed ints and floats will be submitted later. parse_uint_full() has all the checks made by opts_type_uint64() at opts-visitor.c: - Check for NULL (returns -EINVAL) - Check for negative numbers (returns -EINVAL) - Check for empty string (returns -EINVAL) - Check for overflow or other errno values set by strtoll() (returns -errno) - Check for end of string (reject invalid characters after number) (returns -EINVAL) parse_uint() does everything above except checking for the end of the string, so callers can continue parsing the remainder of string after the number. Unit tests included. [1] string-input-visitor.c:parse_int() could use the same parsing code used by opts-visitor.c:opts_type_int(), instead of duplicating that logic. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'include/qemu-common.h')
-rw-r--r--include/qemu-common.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/qemu-common.h b/include/qemu-common.h
index af2379ff38..80016adae3 100644
--- a/include/qemu-common.h
+++ b/include/qemu-common.h
@@ -173,6 +173,10 @@ int qemu_fdatasync(int fd);
int fcntl_setfl(int fd, int flag);
int qemu_parse_fd(const char *param);
+int parse_uint(const char *s, unsigned long long *value, char **endptr,
+ int base);
+int parse_uint_full(const char *s, unsigned long long *value, int base);
+
/*
* strtosz() suffixes used to specify the default treatment of an
* argument passed to strtosz() without an explicit suffix.