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https://github.com/openembedded/meta-openembedded.git
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Andrea Adami
011383b95d
The syscall has been added to klibc. Signed-off-by: Andrea Adami <andrea.adami@gmail.com> Signed-off-by: Khem Raj <raj.khem@gmail.com>
72 lines
2.2 KiB
Diff
72 lines
2.2 KiB
Diff
From 45a80fe7d247898d83edfeabe32b9de80a50a6be Mon Sep 17 00:00:00 2001
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From: Andrea Adami <andrea.adami@gmail.com>
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Date: Fri, 31 Aug 2018 11:33:51 +0200
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Subject: [PATCH] kexec-syscall.h: work around missing syscall() wrapper
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Fix
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kexec-syscall.h: In function 'kexec_load':
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kexec-syscall.h:80:16: warning: implicit declaration of function 'syscall'
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Upstream-Status: Inappropriate [klibc specific]
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Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
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---
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kexec/kexec-syscall.h | 21 +++++++++++++++++++++
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1 file changed, 21 insertions(+)
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diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h
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index 33638c2..204007d 100644
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--- a/kexec/kexec-syscall.h
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+++ b/kexec/kexec-syscall.h
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@@ -74,11 +74,16 @@
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struct kexec_segment;
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+#ifndef __KLIBC__
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static inline long kexec_load(void *entry, unsigned long nr_segments,
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struct kexec_segment *segments, unsigned long flags)
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{
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return (long) syscall(__NR_kexec_load, entry, nr_segments, segments, flags);
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}
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+#else
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+extern long kexec_load(void *entry, unsigned long nr_segments,
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+ struct kexec_segment *segments, unsigned long flags);
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+#endif
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static inline int is_kexec_file_load_implemented(void) {
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if (__NR_kexec_file_load != 0xffffffff)
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@@ -86,6 +91,21 @@ static inline int is_kexec_file_load_implemented(void) {
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return 0;
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}
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+#ifdef __KLIBC__
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+/* Stub provided by klibc only for the following archs */
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+#if defined (__x86_64__) || defined (__powerpc_64__) || defined (__s390x__)
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+extern long kexec_file_load(int kernel_fd, int initrd_fd,
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+ unsigned long cmdline_len, const char *cmdline_ptr,
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+ unsigned long flags);
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+#else
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+static inline long kexec_file_load(int kernel_fd, int initrd_fd,
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+ unsigned long cmdline_len, const char *cmdline_ptr,
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+ unsigned long flags)
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+{
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+ return -1;
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+}
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+#endif
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+#else
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static inline long kexec_file_load(int kernel_fd, int initrd_fd,
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unsigned long cmdline_len, const char *cmdline_ptr,
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unsigned long flags)
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@@ -93,6 +113,7 @@ static inline long kexec_file_load(int kernel_fd, int initrd_fd,
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return (long) syscall(__NR_kexec_file_load, kernel_fd, initrd_fd,
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cmdline_len, cmdline_ptr, flags);
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}
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+#endif
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#define KEXEC_ON_CRASH 0x00000001
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#define KEXEC_PRESERVE_CONTEXT 0x00000002
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--
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2.7.4
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