diff options
| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-18 10:18:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-18 10:18:39 -0700 |
| commit | 5cc97bf2d8eaa6cab60727c3eba3e85e29062669 (patch) | |
| tree | 975976f2cb37b932d65440e6fb9960be93fc0bd7 /mm/util.c | |
| parent | 826ea8f22cf612d534f33c492c98f7895043bfd1 (diff) | |
| parent | dfdcdd42fdf63452ddd1bed6f49ae2a35dfb5d6c (diff) | |
Merge branch 'xen-upstream' of ssh://master.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
* 'xen-upstream' of ssh://master.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: (44 commits)
xen: disable all non-virtual drivers
xen: use iret directly when possible
xen: suppress abs symbol warnings for unused reloc pointers
xen: Attempt to patch inline versions of common operations
xen: Place vcpu_info structure into per-cpu memory
xen: handle external requests for shutdown, reboot and sysrq
xen: machine operations
xen: add virtual network device driver
xen: add virtual block device driver.
xen: add the Xenbus sysfs and virtual device hotplug driver
xen: Add grant table support
xen: use the hvc console infrastructure for Xen console
xen: hack to prevent bad segment register reload
xen: lazy-mmu operations
xen: Add support for preemption
xen: SMP guest support
xen: Implement sched_clock
xen: Account for stolen time
xen: ignore RW mapping of RO pages in pagetable_init
xen: Complete pagetable pinning
...
Diffstat (limited to 'mm/util.c')
| -rw-r--r-- | mm/util.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/mm/util.c b/mm/util.c index 78f3783bdcc..bf340d80686 100644 --- a/mm/util.c +++ b/mm/util.c @@ -6,7 +6,6 @@ /** * kstrdup - allocate space for and copy an existing string - * * @s: the string to duplicate * @gfp: the GFP mask used in the kmalloc() call when allocating memory */ @@ -27,6 +26,30 @@ char *kstrdup(const char *s, gfp_t gfp) EXPORT_SYMBOL(kstrdup); /** + * kstrndup - allocate space for and copy an existing string + * @s: the string to duplicate + * @max: read at most @max chars from @s + * @gfp: the GFP mask used in the kmalloc() call when allocating memory + */ +char *kstrndup(const char *s, size_t max, gfp_t gfp) +{ + size_t len; + char *buf; + + if (!s) + return NULL; + + len = strnlen(s, max); + buf = kmalloc_track_caller(len+1, gfp); + if (buf) { + memcpy(buf, s, len); + buf[len] = '\0'; + } + return buf; +} +EXPORT_SYMBOL(kstrndup); + +/** * kmemdup - duplicate region of memory * * @src: memory region to duplicate @@ -80,7 +103,6 @@ EXPORT_SYMBOL(krealloc); /* * strndup_user - duplicate an existing string from user space - * * @s: The string to duplicate * @n: Maximum number of bytes to copy, including the trailing NUL. */ |