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]>,
Hao Xu <[email protected]>,
Pavel Begunkov <[email protected]>,
io-uring Mailing List <[email protected]>,
GNU/Weeb Mailing List <[email protected]>
Subject: [PATCH liburing v5 03/10] arch: syscall: Add `__sys_read()` syscall
Date: Tue, 5 Jul 2022 14:43:53 +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.
Reviewed-by: Alviro Iskandar Setiawan <[email protected]>
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 d38b5f3..df90e0d 100644
--- a/src/arch/syscall-defs.h
+++ b/src/arch/syscall-defs.h
@@ -17,6 +17,11 @@ static inline int __sys_open(const char *pathname, int flags, mode_t mode)
#endif
}
+static inline ssize_t __sys_read(int fd, void *buffer, size_t size)
+{
+ return (ssize_t) __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:[~2022-07-05 7:45 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-05 7:43 [PATCH liburing v5 00/10] aarch64 support Ammar Faizi
2022-07-05 7:43 ` [PATCH liburing v5 01/10] CHANGELOG: Fixup missing space Ammar Faizi
2022-07-05 7:43 ` [PATCH liburing v5 02/10] arch: syscall: Add `__sys_open()` syscall Ammar Faizi
2022-07-05 7:43 ` Ammar Faizi [this message]
2022-07-05 7:43 ` [PATCH liburing v5 04/10] arch: Remove `__INTERNAL__LIBURING_LIB_H` checks Ammar Faizi
2022-07-05 7:43 ` [PATCH liburing v5 05/10] arch/aarch64: lib: Add `get_page_size()` function Ammar Faizi
2022-07-05 7:43 ` [PATCH liburing v5 06/10] lib: Style fixup for #if / #elif / #else / #endif Ammar Faizi
2022-07-05 7:43 ` [PATCH liburing v5 07/10] lib: Enable nolibc support for aarch64 Ammar Faizi
2022-07-05 7:43 ` [PATCH liburing v5 08/10] test: Add nolibc test Ammar Faizi
2022-07-05 7:43 ` [PATCH liburing v5 09/10] .github: Enable aarch64 nolibc build for GitHub bot Ammar Faizi
2022-07-05 7:44 ` [PATCH liburing v5 10/10] CHANGELOG: Note about aarch64 support Ammar Faizi
2022-07-05 14:26 ` [PATCH liburing v5 00/10] " Jens Axboe
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