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