https://github.com/torvalds/linux
Revision 846e8dd47c264e0b359afed28ea88e0acdee6818 authored by Greg Kroah-Hartman on 25 September 2018, 16:14:14 UTC, committed by Greg Kroah-Hartman on 25 September 2018, 16:14:14 UTC
James writes: "SCSI fixes on 20180925 Nine obvious bug fixes mostly in individual drivers. The target fix is of particular importance because it's CVE related." * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: sd: don't crash the host on invalid commands scsi: ipr: System hung while dlpar adding primary ipr adapter back scsi: target: iscsi: Use bin2hex instead of a re-implementation scsi: target: iscsi: Use hex2bin instead of a re-implementation scsi: lpfc: Synchronize access to remoteport via rport scsi: ufs: Disable blk-mq for now scsi: sd: Contribute to randomness when running rotational device scsi: ibmvscsis: Ensure partition name is properly NUL terminated scsi: ibmvscsis: Fix a stringop-overflow warning
Tip revision: 846e8dd47c264e0b359afed28ea88e0acdee6818 authored by Greg Kroah-Hartman on 25 September 2018, 16:14:14 UTC
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Tip revision: 846e8dd
kasprintf.c
// SPDX-License-Identifier: GPL-2.0
/*
* linux/lib/kasprintf.c
*
* Copyright (C) 1991, 1992 Linus Torvalds
*/
#include <stdarg.h>
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/string.h>
/* Simplified asprintf. */
char *kvasprintf(gfp_t gfp, const char *fmt, va_list ap)
{
unsigned int first, second;
char *p;
va_list aq;
va_copy(aq, ap);
first = vsnprintf(NULL, 0, fmt, aq);
va_end(aq);
p = kmalloc_track_caller(first+1, gfp);
if (!p)
return NULL;
second = vsnprintf(p, first+1, fmt, ap);
WARN(first != second, "different return values (%u and %u) from vsnprintf(\"%s\", ...)",
first, second, fmt);
return p;
}
EXPORT_SYMBOL(kvasprintf);
/*
* If fmt contains no % (or is exactly %s), use kstrdup_const. If fmt
* (or the sole vararg) points to rodata, we will then save a memory
* allocation and string copy. In any case, the return value should be
* freed using kfree_const().
*/
const char *kvasprintf_const(gfp_t gfp, const char *fmt, va_list ap)
{
if (!strchr(fmt, '%'))
return kstrdup_const(fmt, gfp);
if (!strcmp(fmt, "%s"))
return kstrdup_const(va_arg(ap, const char*), gfp);
return kvasprintf(gfp, fmt, ap);
}
EXPORT_SYMBOL(kvasprintf_const);
char *kasprintf(gfp_t gfp, const char *fmt, ...)
{
va_list ap;
char *p;
va_start(ap, fmt);
p = kvasprintf(gfp, fmt, ap);
va_end(ap);
return p;
}
EXPORT_SYMBOL(kasprintf);
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