From 1e66df3ee301209f4a38df097d7cc5cb9b367a3f Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Tue, 17 Jul 2007 18:37:02 -0700 Subject: add kstrndup Add a kstrndup function, modelled on strndup. Like strndup this returns a string copied into its own allocated memory, but it copies no more than the specified number of bytes from the source. Remove private strndup() from irda code. Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Chris Wright Cc: Andrew Morton Cc: Randy Dunlap Cc: YOSHIFUJI Hideaki Cc: Akinobu Mita Cc: Arnaldo Carvalho de Melo Cc: Al Viro Cc: Panagiotis Issaris Cc: Rene Scharfe --- net/irda/irias_object.c | 43 +++++-------------------------------------- 1 file changed, 5 insertions(+), 38 deletions(-) (limited to 'net/irda') diff --git a/net/irda/irias_object.c b/net/irda/irias_object.c index 4adaae242b9e..cf302457097b 100644 --- a/net/irda/irias_object.c +++ b/net/irda/irias_object.c @@ -36,39 +36,6 @@ hashbin_t *irias_objects; */ struct ias_value irias_missing = { IAS_MISSING, 0, 0, 0, {0}}; -/* - * Function strndup (str, max) - * - * My own kernel version of strndup! - * - * Faster, check boundary... Jean II - */ -static char *strndup(char *str, size_t max) -{ - char *new_str; - int len; - - /* Check string */ - if (str == NULL) - return NULL; - /* Check length, truncate */ - len = strlen(str); - if(len > max) - len = max; - - /* Allocate new string */ - new_str = kmalloc(len + 1, GFP_ATOMIC); - if (new_str == NULL) { - IRDA_WARNING("%s: Unable to kmalloc!\n", __FUNCTION__); - return NULL; - } - - /* Copy and truncate */ - memcpy(new_str, str, len); - new_str[len] = '\0'; - - return new_str; -} /* * Function ias_new_object (name, id) @@ -90,7 +57,7 @@ struct ias_object *irias_new_object( char *name, int id) } obj->magic = IAS_OBJECT_MAGIC; - obj->name = strndup(name, IAS_MAX_CLASSNAME); + obj->name = kstrndup(name, IAS_MAX_CLASSNAME, GFP_ATOMIC); if (!obj->name) { IRDA_WARNING("%s(), Unable to allocate name!\n", __FUNCTION__); @@ -360,7 +327,7 @@ void irias_add_integer_attrib(struct ias_object *obj, char *name, int value, } attrib->magic = IAS_ATTRIB_MAGIC; - attrib->name = strndup(name, IAS_MAX_ATTRIBNAME); + attrib->name = kstrndup(name, IAS_MAX_ATTRIBNAME, GFP_ATOMIC); /* Insert value */ attrib->value = irias_new_integer_value(value); @@ -404,7 +371,7 @@ void irias_add_octseq_attrib(struct ias_object *obj, char *name, __u8 *octets, } attrib->magic = IAS_ATTRIB_MAGIC; - attrib->name = strndup(name, IAS_MAX_ATTRIBNAME); + attrib->name = kstrndup(name, IAS_MAX_ATTRIBNAME, GFP_ATOMIC); attrib->value = irias_new_octseq_value( octets, len); if (!attrib->name || !attrib->value) { @@ -446,7 +413,7 @@ void irias_add_string_attrib(struct ias_object *obj, char *name, char *value, } attrib->magic = IAS_ATTRIB_MAGIC; - attrib->name = strndup(name, IAS_MAX_ATTRIBNAME); + attrib->name = kstrndup(name, IAS_MAX_ATTRIBNAME, GFP_ATOMIC); attrib->value = irias_new_string_value(value); if (!attrib->name || !attrib->value) { @@ -506,7 +473,7 @@ struct ias_value *irias_new_string_value(char *string) value->type = IAS_STRING; value->charset = CS_ASCII; - value->t.string = strndup(string, IAS_MAX_STRING); + value->t.string = kstrndup(string, IAS_MAX_STRING, GFP_ATOMIC); if (!value->t.string) { IRDA_WARNING("%s: Unable to kmalloc!\n", __FUNCTION__); kfree(value); -- cgit v1.2.3-59-g8ed1b