linux-kernel - [PATCH 09/13] tools/nolibc: sys_poll: riscv: use __NR_ppoll

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Message-Id: <ec5af2ae25264eddce4b50380bfd24f9490eca75.1684949268.git.falcon@tinylab.org>
Date:   Thu, 25 May 2023 01:57:24 +0800
From:   Zhangjin Wu <falcon@...ylab.org>
To:     w@....eu
Cc:     falcon@...ylab.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-riscv@...ts.infradead.org,
        palmer@...belt.com, paul.walmsley@...ive.com, thomas@...ch.de
Subject: [PATCH 09/13] tools/nolibc: sys_poll: riscv: use __NR_ppoll_time64 for rv32

rv32 uses the generic include/uapi/asm-generic/unistd.h and it has no
__NR_ppoll after kernel commit d4c08b9776b3 ("riscv: Use latest system
call ABI"), use __NR_ppoll_time64 instead.

Signed-off-by: Zhangjin Wu <falcon@...ylab.org>
---
 tools/include/nolibc/std.h   | 1 +
 tools/include/nolibc/sys.h   | 7 ++++++-
 tools/include/nolibc/types.h | 6 ++++++
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/tools/include/nolibc/std.h b/tools/include/nolibc/std.h
index 83c0b0cb9564..221385c0e823 100644
--- a/tools/include/nolibc/std.h
+++ b/tools/include/nolibc/std.h
@@ -32,6 +32,7 @@ typedef   signed long         off_t;
 typedef   signed long     blksize_t;
 typedef   signed long      blkcnt_t;
 typedef   signed long        time_t;
+typedef     long long       time64_t;
 typedef     long long        loff_t;
 
 #endif /* _NOLIBC_STD_H */
diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index 0ff77c0a06d7..08d38175bd7b 100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -923,8 +923,13 @@ int pivot_root(const char *new, const char *old)
 static __attribute__((unused))
 int sys_poll(struct pollfd *fds, int nfds, int timeout)
 {
-#if defined(__NR_ppoll)
+#if defined(__NR_ppoll) || defined(__NR_ppoll_time64)
+#ifdef __NR_ppoll
 	struct timespec t;
+#else
+	struct timespec64 t;
+#define __NR_ppoll __NR_ppoll_time64
+#endif
 
 	if (timeout >= 0) {
 		t.tv_sec  = timeout / 1000;
diff --git a/tools/include/nolibc/types.h b/tools/include/nolibc/types.h
index 15b0baffd336..ee914391439c 100644
--- a/tools/include/nolibc/types.h
+++ b/tools/include/nolibc/types.h
@@ -203,6 +203,12 @@ struct stat {
 	time_t    st_ctime;   /* time of last status change */
 };
 
+/* needed by time64 syscalls */
+struct timespec64 {
+	time64_t	tv_sec;		/* seconds */
+	long		tv_nsec;	/* nanoseconds */
+};
+
 /* WARNING, it only deals with the 4096 first majors and 256 first minors */
 #define makedev(major, minor) ((dev_t)((((major) & 0xfff) << 8) | ((minor) & 0xff)))
 #define major(dev) ((unsigned int)(((dev) >> 8) & 0xfff))
-- 
2.25.1