The branch main has been updated by imp: URL: https://cgit.FreeBSD.org/src/commit/?id=76949f503f008b28865bd0fd026a550a3cb48619
commit 76949f503f008b28865bd0fd026a550a3cb48619 Author: Warner Losh <[email protected]> AuthorDate: 2022-06-27 23:49:21 +0000 Commit: Warner Losh <[email protected]> CommitDate: 2022-07-15 18:00:50 +0000 kboot: Implement munmap(2) Define host_munmap so we can use it in the x86 code to find things for the BIOS/CMS boot path and unmap after we find it. Sponsored by: Netflix --- stand/kboot/arch/amd64/syscall_nr.h | 1 + stand/kboot/arch/powerpc64/syscall_nr.h | 1 + stand/kboot/host_syscall.h | 1 + stand/kboot/host_syscalls.c | 6 ++++++ 4 files changed, 9 insertions(+) diff --git a/stand/kboot/arch/amd64/syscall_nr.h b/stand/kboot/arch/amd64/syscall_nr.h index c22c80ea7cb9..7813eff92890 100644 --- a/stand/kboot/arch/amd64/syscall_nr.h +++ b/stand/kboot/arch/amd64/syscall_nr.h @@ -4,6 +4,7 @@ #define SYS_kexec_load 246 #define SYS_lseek 8 #define SYS_mmap 9 +#define SYS_munmap 11 #define SYS_newfstat 5 #define SYS_newfstatat 262 #define SYS_openat 257 diff --git a/stand/kboot/arch/powerpc64/syscall_nr.h b/stand/kboot/arch/powerpc64/syscall_nr.h index aa94e6a82bb7..9471fd48ceb2 100644 --- a/stand/kboot/arch/powerpc64/syscall_nr.h +++ b/stand/kboot/arch/powerpc64/syscall_nr.h @@ -5,6 +5,7 @@ #define SYS_kexec_load 268 #define SYS_llseek 140 #define SYS_mmap 90 +#define SYS_munmap 91 #define SYS_newfstat SYS_fstat #define SYS_newfstatat 291 #define SYS_openat 286 diff --git a/stand/kboot/host_syscall.h b/stand/kboot/host_syscall.h index 6ff20f7ba393..8007f29feb9d 100644 --- a/stand/kboot/host_syscall.h +++ b/stand/kboot/host_syscall.h @@ -96,6 +96,7 @@ int host_gettimeofday(struct host_timeval *a, void *b); int host_kexec_load(uint32_t start, int nsegs, uint32_t segs, uint32_t flags); ssize_t host_llseek(int fd, int32_t offset_high, int32_t offset_lo, uint64_t *result, int whence); void *host_mmap(void *addr, size_t len, int prot, int flags, int fd, off_t off); +int host_munmap(void *addr, size_t len); int host_open(const char *path, int flags, int mode); ssize_t host_read(int fd, void *buf, size_t nbyte); int host_reboot(int, int, int, uintptr_t); diff --git a/stand/kboot/host_syscalls.c b/stand/kboot/host_syscalls.c index 9cc6c6cd873e..3cfccdc0c718 100644 --- a/stand/kboot/host_syscalls.c +++ b/stand/kboot/host_syscalls.c @@ -57,6 +57,12 @@ host_mmap(void *addr, size_t len, int prot, int flags, int fd, off_t off) return (void *)host_syscall(SYS_mmap, (uintptr_t)addr, len, prot, flags, fd, off); } +int +host_munmap(void *addr, size_t len) +{ + return host_syscall(SYS_munmap, (uintptr_t)addr, len); +} + int host_open(const char *path, int flags, int mode) {
