From 20e9f7de41e12510886c5b7be6bf28e0be5221af Mon Sep 17 00:00:00 2001
From: Andrea Mazzoleni <amadvance@gmail.com>
Date: Sun, 23 Oct 2016 22:03:02 +0200
Subject: [PATCH] Ignore fadvise if it return ENOSYS

This happens in ARM platform because fadvise is
differently implemented by the kernel and glibc
may not support it yet.
---
 cmdline/stream.c  | 10 ++++++++++
 cmdline/support.c | 12 ++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/cmdline/stream.c b/cmdline/stream.c
index c5ced0c7..81834043 100644
--- a/cmdline/stream.c
+++ b/cmdline/stream.c
@@ -47,11 +47,16 @@ STREAM* sopen_read(const char* file)
 #if HAVE_POSIX_FADVISE
 	/* advise sequential access */
 	ret = posix_fadvise(s->handle[0].f, 0, 0, POSIX_FADV_SEQUENTIAL);
+	if (ret == ENOSYS) {
+		/* call is not supported, like in armhf, see posix_fadvise manpage */
+		ret = 0;
+	}
 	if (ret != 0) {
 		/* LCOV_EXCL_START */
 		close(s->handle[0].f);
 		free(s->handle);
 		free(s);
+		errno = ret; /* posix_fadvise return the error code */
 		return 0;
 		/* LCOV_EXCL_STOP */
 	}
@@ -116,9 +121,14 @@ int sopen_multi_file(STREAM* s, unsigned i, const char* file)
 #if HAVE_POSIX_FADVISE
 	/* advise sequential access */
 	ret = posix_fadvise(f, 0, 0, POSIX_FADV_SEQUENTIAL);
+	if (ret == ENOSYS) {
+		/* call is not supported, like in armhf, see posix_fadvise manpage */
+		ret = 0;
+	}
 	if (ret != 0) {
 		/* LCOV_EXCL_START */
 		close(f);
+		errno = ret; /* posix_fadvise return the error code */
 		return -1;
 		/* LCOV_EXCL_STOP */
 	}
diff --git a/cmdline/support.c b/cmdline/support.c
index b82b4391..8d4c7f56 100644
--- a/cmdline/support.c
+++ b/cmdline/support.c
@@ -940,6 +940,10 @@ int advise_open(struct advise_struct* advise, int f)
 
 		/* advise sequential access */
 		ret = posix_fadvise(f, 0, 0, POSIX_FADV_SEQUENTIAL);
+		if (ret == ENOSYS) {
+			/* call is not supported, like in armhf, see posix_fadvise manpage */
+			ret = 0;
+		}
 		if (ret != 0) {
 			/* LCOV_EXCL_START */
 			errno = ret; /* posix_fadvise return the error code */
@@ -1116,6 +1120,10 @@ int advise_write(struct advise_struct* advise, int f, data_off_t offset, data_of
 
 		/* flush the data from the cache */
 		ret = posix_fadvise(f, discard_offset, discard_size, POSIX_FADV_DONTNEED);
+		if (ret == ENOSYS) {
+			/* call is not supported, like in armhf, see posix_fadvise manpage */
+			ret = 0;
+		}
 		if (ret != 0) {
 			/* LCOV_EXCL_START */
 			errno = ret; /* posix_fadvise return the error code */
@@ -1143,6 +1151,10 @@ int advise_read(struct advise_struct* advise, int f, data_off_t offset, data_off
 
 		/* flush the data from the cache */
 		ret = posix_fadvise(f, offset, size, POSIX_FADV_DONTNEED);
+		if (ret == ENOSYS) {
+			/* call is not supported, like in armhf, see posix_fadvise manpage */
+			ret = 0;
+		}
 		if (ret != 0) {
 			/* LCOV_EXCL_START */
 			errno = ret; /* posix_fadvise return the error code */