/* * linux/lib/kasprintf.c * * Copyright (C) 1991, 1992 Linus Torvalds */ #include #include #include #include #include /* 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); rx-pump-back'>packet-rx-pump-back net-next plumbingsTobias Klauser
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authorLinus Torvalds <torvalds@linux-foundation.org>2017-01-15 12:38:53 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-15 12:38:53 -0800
commit2d5a7101a140adcf7a5d8677649847fbb2dd5a2f (patch)
tree02e3532964dd4c42aa6ea2187fee67e6dfee36dd /include/math-emu/double.h
parent7f138b9706f5f3528d598aefd35337d54a8c1afb (diff)
parentc7334ce814f7e5d8fc1f9b3126cda0640c2f81b3 (diff)
Merge tag 'driver-core-4.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fix from Greg KH: "Here is a single patch being reverted to remove a feature that was added in 4.10-rc1 that isn't quite ready for release. It will be redone as a debugfs file instead of a sysfs file in the future" * tag 'driver-core-4.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: Revert "driver core: Add deferred_probe attribute to devices in sysfs"
Diffstat (limited to 'include/math-emu/double.h')