1*4882a593SmuzhiyunFrom ab24f236cbc0aa8a3eadde5d71d9d7ea1d979a51 Mon Sep 17 00:00:00 2001 2*4882a593SmuzhiyunFrom: Andrea Adami <andrea.adami@gmail.com> 3*4882a593SmuzhiyunDate: Fri, 31 Aug 2018 11:33:51 +0200 4*4882a593SmuzhiyunSubject: [PATCH] kexec-syscall.h: work around missing syscall() wrapper 5*4882a593Smuzhiyun 6*4882a593SmuzhiyunFix 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun kexec-syscall.h: In function 'kexec_load': 9*4882a593Smuzhiyun kexec-syscall.h:80:16: warning: implicit declaration of function 'syscall' 10*4882a593Smuzhiyun 11*4882a593SmuzhiyunUpstream-Status: Inappropriate [klibc specific] 12*4882a593SmuzhiyunSigned-off-by: Andrea Adami <andrea.adami@gmail.com> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun--- 15*4882a593Smuzhiyun kexec/kexec-syscall.h | 21 +++++++++++++++++++++ 16*4882a593Smuzhiyun 1 file changed, 21 insertions(+) 17*4882a593Smuzhiyun 18*4882a593Smuzhiyundiff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h 19*4882a593Smuzhiyunindex b96e02a..2a3794d 100644 20*4882a593Smuzhiyun--- a/kexec/kexec-syscall.h 21*4882a593Smuzhiyun+++ b/kexec/kexec-syscall.h 22*4882a593Smuzhiyun@@ -77,11 +77,16 @@ 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun struct kexec_segment; 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun+#ifndef __KLIBC__ 27*4882a593Smuzhiyun static inline long kexec_load(void *entry, unsigned long nr_segments, 28*4882a593Smuzhiyun struct kexec_segment *segments, unsigned long flags) 29*4882a593Smuzhiyun { 30*4882a593Smuzhiyun return (long) syscall(__NR_kexec_load, entry, nr_segments, segments, flags); 31*4882a593Smuzhiyun } 32*4882a593Smuzhiyun+#else 33*4882a593Smuzhiyun+extern long kexec_load(void *entry, unsigned long nr_segments, 34*4882a593Smuzhiyun+ struct kexec_segment *segments, unsigned long flags); 35*4882a593Smuzhiyun+#endif 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun static inline int is_kexec_file_load_implemented(void) { 38*4882a593Smuzhiyun if (__NR_kexec_file_load != 0xffffffff) 39*4882a593Smuzhiyun@@ -89,6 +94,21 @@ static inline int is_kexec_file_load_implemented(void) { 40*4882a593Smuzhiyun return 0; 41*4882a593Smuzhiyun } 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun+#ifdef __KLIBC__ 44*4882a593Smuzhiyun+/* Stub provided by klibc only for the following archs */ 45*4882a593Smuzhiyun+#if defined (__x86_64__) || defined (__powerpc_64__) || defined (__s390x__) 46*4882a593Smuzhiyun+extern long kexec_file_load(int kernel_fd, int initrd_fd, 47*4882a593Smuzhiyun+ unsigned long cmdline_len, const char *cmdline_ptr, 48*4882a593Smuzhiyun+ unsigned long flags); 49*4882a593Smuzhiyun+#else 50*4882a593Smuzhiyun+static inline long kexec_file_load(int kernel_fd, int initrd_fd, 51*4882a593Smuzhiyun+ unsigned long cmdline_len, const char *cmdline_ptr, 52*4882a593Smuzhiyun+ unsigned long flags) 53*4882a593Smuzhiyun+{ 54*4882a593Smuzhiyun+ return -1; 55*4882a593Smuzhiyun+} 56*4882a593Smuzhiyun+#endif 57*4882a593Smuzhiyun+#else 58*4882a593Smuzhiyun static inline long kexec_file_load(int kernel_fd, int initrd_fd, 59*4882a593Smuzhiyun unsigned long cmdline_len, const char *cmdline_ptr, 60*4882a593Smuzhiyun unsigned long flags) 61*4882a593Smuzhiyun@@ -96,6 +116,7 @@ static inline long kexec_file_load(int kernel_fd, int initrd_fd, 62*4882a593Smuzhiyun return (long) syscall(__NR_kexec_file_load, kernel_fd, initrd_fd, 63*4882a593Smuzhiyun cmdline_len, cmdline_ptr, flags); 64*4882a593Smuzhiyun } 65*4882a593Smuzhiyun+#endif 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun #define KEXEC_ON_CRASH 0x00000001 68*4882a593Smuzhiyun #define KEXEC_PRESERVE_CONTEXT 0x00000002 69