From: Ammar Faizi <[email protected]>
To: Jens Axboe <[email protected]>
Cc: Ammar Faizi <[email protected]>,
Alviro Iskandar Setiawan <[email protected]>,
Fernanda Ma'rouf <[email protected]>,
Pavel Begunkov <[email protected]>,
Hao Xu <[email protected]>,
io-uring Mailing List <[email protected]>,
GNU/Weeb Mailing List <[email protected]>
Subject: [PATCH liburing v1 4/9] arch: syscall: Add `__sys_read()` syscall
Date: Wed, 29 Jun 2022 07:27:48 +0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
From: Ammar Faizi <[email protected]>
A prep patch to support aarch64 nolibc. We will use this to get the
page size by reading /proc/self/auxv.
Signed-off-by: Ammar Faizi <[email protected]>
---
src/arch/generic/syscall.h | 7 +++++++
src/arch/syscall-defs.h | 5 +++++
2 files changed, 12 insertions(+)
diff --git a/src/arch/generic/syscall.h b/src/arch/generic/syscall.h
index 71b2234..22252a1 100644
--- a/src/arch/generic/syscall.h
+++ b/src/arch/generic/syscall.h
@@ -50,6 +50,13 @@ static inline int __sys_open(const char *pathname, int flags, mode_t mode)
return (ret < 0) ? -errno : ret;
}
+static inline ssize_t __sys_read(int fd, void *buffer, size_t size)
+{
+ ssize_t ret;
+ ret = read(fd, buffer, size);
+ return (ret < 0) ? -errno : ret;
+}
+
static inline void *__sys_mmap(void *addr, size_t length, int prot, int flags,
int fd, off_t offset)
{
diff --git a/src/arch/syscall-defs.h b/src/arch/syscall-defs.h
index 0f67446..4b5ba40 100644
--- a/src/arch/syscall-defs.h
+++ b/src/arch/syscall-defs.h
@@ -10,6 +10,11 @@ static inline int __sys_open(const char *pathname, int flags, mode_t mode)
return (int) __do_syscall3(__NR_open, pathname, flags, mode);
}
+static inline int __sys_read(int fd, void *buffer, size_t size)
+{
+ return (int) __do_syscall3(__NR_read, fd, buffer, size);
+}
+
static inline void *__sys_mmap(void *addr, size_t length, int prot, int flags,
int fd, off_t offset)
{
--
Ammar Faizi
next prev parent reply other threads:[~2022-06-29 0:28 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-29 0:27 [PATCH liburing v1 0/9] aarch64 nolibc support Ammar Faizi
2022-06-29 0:27 ` [PATCH liburing v1 1/9] CHANGELOG: Fixup missing space Ammar Faizi
2022-06-29 0:27 ` [PATCH liburing v1 2/9] setup: Handle `get_page_size()` failure (for aarch64 nolibc support) Ammar Faizi
2022-06-29 0:50 ` Alviro Iskandar Setiawan
2022-06-29 1:00 ` Ammar Faizi
2022-06-29 15:00 ` Jens Axboe
2022-06-29 15:17 ` Ammar Faizi
2022-06-29 0:27 ` [PATCH liburing v1 3/9] arch: syscall: Add `__sys_open()` syscall Ammar Faizi
2022-06-29 0:27 ` Ammar Faizi [this message]
2022-06-29 0:27 ` [PATCH liburing v1 5/9] arch/arm64: Rename aarch64 directory to arm64 Ammar Faizi
2022-06-29 14:48 ` Jens Axboe
2022-06-29 14:51 ` Ammar Faizi
2022-06-29 0:27 ` [PATCH liburing v1 6/9] arch: syscall: Remove `__INTERNAL__LIBURING_SYSCALL_H` checks Ammar Faizi
2022-06-29 0:27 ` [PATCH liburing v1 7/9] arch/arm64: Add `get_page_size()` function Ammar Faizi
2022-06-29 0:31 ` Ammar Faizi
2022-06-29 14:49 ` Jens Axboe
2022-06-29 14:52 ` Ammar Faizi
2022-06-29 0:27 ` [PATCH liburing v1 8/9] arch: Enable nolibc support for arm64 Ammar Faizi
2022-06-29 0:27 ` [PATCH liburing v1 9/9] .github: Enable aarch64 nolibc build for GitHub bot Ammar Faizi
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