Date: Mon, 24 Aug 2020 17:25:26 +0000 (UTC) From: Edward Tomasz Napierala <trasz@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r364715 - in stable/12/sys: amd64/linux amd64/linux32 arm64/linux compat/linux i386/linux sys vm Message-ID: <202008241725.07OHPQmO012470@repo.freebsd.org>
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Author: trasz Date: Mon Aug 24 17:25:26 2020 New Revision: 364715 URL: https://svnweb.freebsd.org/changeset/base/364715 Log: MFC r362440: Add linux_madvise(2) instead of having Linux apps call the native FreeBSD madvise(2) directly. While some of the flag values match, most don't. PR: kern/230160 Sponsored by: The FreeBSD Foundation Modified: stable/12/sys/amd64/linux/linux_machdep.c stable/12/sys/amd64/linux/syscalls.master stable/12/sys/amd64/linux32/linux32_machdep.c stable/12/sys/amd64/linux32/syscalls.master stable/12/sys/arm64/linux/linux_machdep.c stable/12/sys/arm64/linux/syscalls.master stable/12/sys/compat/linux/linux_mmap.c stable/12/sys/compat/linux/linux_mmap.h stable/12/sys/i386/linux/linux_machdep.c stable/12/sys/i386/linux/syscalls.master stable/12/sys/sys/syscallsubr.h stable/12/sys/vm/vm_mmap.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/amd64/linux/linux_machdep.c ============================================================================== --- stable/12/sys/amd64/linux/linux_machdep.c Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/amd64/linux/linux_machdep.c Mon Aug 24 17:25:26 2020 (r364715) @@ -141,6 +141,13 @@ linux_mprotect(struct thread *td, struct linux_mprotec } int +linux_madvise(struct thread *td, struct linux_madvise_args *uap) +{ + + return (linux_madvise_common(td, PTROUT(uap->addr), uap->len, uap->behav)); +} + +int linux_iopl(struct thread *td, struct linux_iopl_args *args) { int error; Modified: stable/12/sys/amd64/linux/syscalls.master ============================================================================== --- stable/12/sys/amd64/linux/syscalls.master Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/amd64/linux/syscalls.master Mon Aug 24 17:25:26 2020 (r364715) @@ -94,7 +94,7 @@ l_size_t len, l_int fl); } 27 AUE_MINCORE STD { int linux_mincore(l_ulong start, \ l_size_t len, u_char *vec); } -28 AUE_MADVISE NOPROTO { int madvise(void *addr, size_t len, \ +28 AUE_MADVISE STD { int linux_madvise(void *addr, size_t len, \ int behav); } 29 AUE_NULL STD { int linux_shmget(l_key_t key, l_size_t size, \ l_int shmflg); } Modified: stable/12/sys/amd64/linux32/linux32_machdep.c ============================================================================== --- stable/12/sys/amd64/linux32/linux32_machdep.c Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/amd64/linux32/linux32_machdep.c Mon Aug 24 17:25:26 2020 (r364715) @@ -469,6 +469,13 @@ linux_mprotect(struct thread *td, struct linux_mprotec } int +linux_madvise(struct thread *td, struct linux_madvise_args *uap) +{ + + return (linux_madvise_common(td, PTROUT(uap->addr), uap->len, uap->behav)); +} + +int linux_iopl(struct thread *td, struct linux_iopl_args *args) { int error; Modified: stable/12/sys/amd64/linux32/syscalls.master ============================================================================== --- stable/12/sys/amd64/linux32/syscalls.master Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/amd64/linux32/syscalls.master Mon Aug 24 17:25:26 2020 (r364715) @@ -389,7 +389,7 @@ char *put_old); } 218 AUE_MINCORE STD { int linux_mincore(l_ulong start, \ l_size_t len, u_char *vec); } -219 AUE_MADVISE NOPROTO { int madvise(void *addr, size_t len, \ +219 AUE_MADVISE STD { int linux_madvise(void *addr, size_t len, \ int behav); } 220 AUE_GETDIRENTRIES STD { int linux_getdents64(l_uint fd, \ void *dirent, l_uint count); } Modified: stable/12/sys/arm64/linux/linux_machdep.c ============================================================================== --- stable/12/sys/arm64/linux/linux_machdep.c Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/arm64/linux/linux_machdep.c Mon Aug 24 17:25:26 2020 (r364715) @@ -104,6 +104,13 @@ linux_mprotect(struct thread *td, struct linux_mprotec uap->prot)); } +int +linux_madvise(struct thread *td, struct linux_madvise_args *uap) +{ + + return (linux_madvise_common(td, PTROUT(uap->addr), uap->len, uap->behav)); +} + /* LINUXTODO: implement arm64 linux_rt_sigsuspend */ int linux_rt_sigsuspend(struct thread *td, struct linux_rt_sigsuspend_args *uap) Modified: stable/12/sys/arm64/linux/syscalls.master ============================================================================== --- stable/12/sys/arm64/linux/syscalls.master Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/arm64/linux/syscalls.master Mon Aug 24 17:25:26 2020 (r364715) @@ -1310,8 +1310,9 @@ u_char *vec ); } -233 AUE_MADVISE NOPROTO { - int madvise(void *addr, +233 AUE_MADVISE STD { + int linux_madvise( + void *addr, size_t len, int behav ); Modified: stable/12/sys/compat/linux/linux_mmap.c ============================================================================== --- stable/12/sys/compat/linux/linux_mmap.c Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/compat/linux/linux_mmap.c Mon Aug 24 17:25:26 2020 (r364715) @@ -233,6 +233,62 @@ linux_mprotect_common(struct thread *td, uintptr_t add return (kern_mprotect(td, addr, len, prot)); } +int +linux_madvise_common(struct thread *td, uintptr_t addr, size_t len, int behav) +{ + + switch (behav) { + case LINUX_MADV_NORMAL: + return (kern_madvise(td, addr, len, MADV_NORMAL)); + case LINUX_MADV_RANDOM: + return (kern_madvise(td, addr, len, MADV_RANDOM)); + case LINUX_MADV_SEQUENTIAL: + return (kern_madvise(td, addr, len, MADV_SEQUENTIAL)); + case LINUX_MADV_WILLNEED: + return (kern_madvise(td, addr, len, MADV_WILLNEED)); + case LINUX_MADV_DONTNEED: + return (kern_madvise(td, addr, len, MADV_DONTNEED)); + case LINUX_MADV_FREE: + return (kern_madvise(td, addr, len, MADV_FREE)); + case LINUX_MADV_REMOVE: + linux_msg(curthread, "unsupported madvise MADV_REMOVE"); + return (EINVAL); + case LINUX_MADV_DONTFORK: + return (kern_minherit(td, addr, len, INHERIT_NONE)); + case LINUX_MADV_DOFORK: + return (kern_minherit(td, addr, len, INHERIT_COPY)); + case LINUX_MADV_MERGEABLE: + linux_msg(curthread, "unsupported madvise MADV_MERGEABLE"); + return (EINVAL); + case LINUX_MADV_UNMERGEABLE: + /* We don't merge anyway. */ + return (0); + case LINUX_MADV_HUGEPAGE: + /* Ignored; on FreeBSD huge pages are always on. */ + return (0); + case LINUX_MADV_NOHUGEPAGE: + linux_msg(curthread, "unsupported madvise MADV_NOHUGEPAGE"); + return (EINVAL); + case LINUX_MADV_DONTDUMP: + return (kern_madvise(td, addr, len, MADV_NOCORE)); + case LINUX_MADV_DODUMP: + return (kern_madvise(td, addr, len, MADV_CORE)); + case LINUX_MADV_WIPEONFORK: + return (kern_minherit(td, addr, len, INHERIT_ZERO)); + case LINUX_MADV_KEEPONFORK: + return (kern_minherit(td, addr, len, INHERIT_COPY)); + case LINUX_MADV_HWPOISON: + linux_msg(curthread, "unsupported madvise MADV_HWPOISON"); + return (EINVAL); + case LINUX_MADV_SOFT_OFFLINE: + linux_msg(curthread, "unsupported madvise MADV_SOFT_OFFLINE"); + return (EINVAL); + default: + linux_msg(curthread, "unsupported madvise behav %d", behav); + return (EINVAL); + } +} + #if defined(__amd64__) static void linux_fixup_prot(struct thread *td, int *prot) Modified: stable/12/sys/compat/linux/linux_mmap.h ============================================================================== --- stable/12/sys/compat/linux/linux_mmap.h Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/compat/linux/linux_mmap.h Mon Aug 24 17:25:26 2020 (r364715) @@ -45,8 +45,29 @@ #define LINUX_PROT_GROWSDOWN 0x01000000 #define LINUX_PROT_GROWSUP 0x02000000 +#define LINUX_MADV_NORMAL 0 +#define LINUX_MADV_RANDOM 1 +#define LINUX_MADV_SEQUENTIAL 2 +#define LINUX_MADV_WILLNEED 3 +#define LINUX_MADV_DONTNEED 4 +#define LINUX_MADV_FREE 8 +#define LINUX_MADV_REMOVE 9 +#define LINUX_MADV_DONTFORK 10 +#define LINUX_MADV_DOFORK 11 +#define LINUX_MADV_MERGEABLE 12 +#define LINUX_MADV_UNMERGEABLE 13 +#define LINUX_MADV_HUGEPAGE 14 +#define LINUX_MADV_NOHUGEPAGE 15 +#define LINUX_MADV_DONTDUMP 16 +#define LINUX_MADV_DODUMP 17 +#define LINUX_MADV_WIPEONFORK 18 +#define LINUX_MADV_KEEPONFORK 19 +#define LINUX_MADV_HWPOISON 100 +#define LINUX_MADV_SOFT_OFFLINE 101 + int linux_mmap_common(struct thread *, uintptr_t, size_t, int, int, int, off_t); int linux_mprotect_common(struct thread *, uintptr_t, size_t, int); +int linux_madvise_common(struct thread *, uintptr_t, size_t, int); #endif /* _LINUX_MMAP_H_ */ Modified: stable/12/sys/i386/linux/linux_machdep.c ============================================================================== --- stable/12/sys/i386/linux/linux_machdep.c Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/i386/linux/linux_machdep.c Mon Aug 24 17:25:26 2020 (r364715) @@ -354,6 +354,13 @@ linux_mprotect(struct thread *td, struct linux_mprotec } int +linux_madvise(struct thread *td, struct linux_madvise_args *uap) +{ + + return (linux_madvise_common(td, PTROUT(uap->addr), uap->len, uap->behav)); +} + +int linux_ioperm(struct thread *td, struct linux_ioperm_args *args) { int error; Modified: stable/12/sys/i386/linux/syscalls.master ============================================================================== --- stable/12/sys/i386/linux/syscalls.master Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/i386/linux/syscalls.master Mon Aug 24 17:25:26 2020 (r364715) @@ -392,7 +392,7 @@ char *put_old); } 218 AUE_MINCORE STD { int linux_mincore(l_ulong start, \ l_size_t len, u_char *vec); } -219 AUE_MADVISE NOPROTO { int madvise(void *addr, size_t len, \ +219 AUE_MADVISE STD { int linux_madvise(void *addr, size_t len, \ int behav); } 220 AUE_GETDIRENTRIES STD { int linux_getdents64(l_uint fd, \ void *dirent, l_uint count); } Modified: stable/12/sys/sys/syscallsubr.h ============================================================================== --- stable/12/sys/sys/syscallsubr.h Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/sys/syscallsubr.h Mon Aug 24 17:25:26 2020 (r364715) @@ -170,6 +170,8 @@ int kern_lutimes(struct thread *td, char *path, enum u struct timeval *tptr, enum uio_seg tptrseg); int kern_madvise(struct thread *td, uintptr_t addr, size_t len, int behav); int kern_mincore(struct thread *td, uintptr_t addr, size_t len, char *vec); +int kern_minherit(struct thread *td, uintptr_t addr, size_t len, + int inherit); int kern_mkdirat(struct thread *td, int fd, char *path, enum uio_seg segflg, int mode); int kern_mkfifoat(struct thread *td, int fd, char *path, Modified: stable/12/sys/vm/vm_mmap.c ============================================================================== --- stable/12/sys/vm/vm_mmap.c Mon Aug 24 17:21:26 2020 (r364714) +++ stable/12/sys/vm/vm_mmap.c Mon Aug 24 17:25:26 2020 (r364715) @@ -645,13 +645,21 @@ struct minherit_args { int sys_minherit(struct thread *td, struct minherit_args *uap) { + + return (kern_minherit(td, (uintptr_t)uap->addr, uap->len, + uap->inherit)); +} + +int +kern_minherit(struct thread *td, uintptr_t addr0, size_t len, int inherit0) +{ vm_offset_t addr; vm_size_t size, pageoff; vm_inherit_t inherit; - addr = (vm_offset_t)uap->addr; - size = uap->len; - inherit = uap->inherit; + addr = (vm_offset_t)addr0; + size = len; + inherit = inherit0; pageoff = (addr & PAGE_MASK); addr -= pageoff;
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