38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
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From f424f5b774b7cb0fd7939d28e68db6fa977baea1 Mon Sep 17 00:00:00 2001
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From: Colin Ian King <colin.i.king@gmail.com>
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Date: Mon, 21 Nov 2022 12:45:11 +0000
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Subject: [PATCH 2/3] stress-shm: skip stressor if /dev/shm is not mounted with
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tmpfs on linux
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Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
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---
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stress-shm.c | 12 ++++++++++++
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1 file changed, 12 insertions(+)
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diff --git a/stress-shm.c b/stress-shm.c
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index 91bcd961aeb1..4e6327ac97d4 100644
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--- a/stress-shm.c
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+++ b/stress-shm.c
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@@ -122,6 +122,18 @@ static int stress_shm_posix_child(
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const size_t page_size = args->page_size;
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struct sigaction sa;
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+#if defined(__linux__)
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+ /*
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+ * /dev/shm should be mounted with tmpfs and
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+ * be writeable, if not shm_open will fail
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+ */
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+ if (access("/dev/shm", W_OK) < 0) {
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+ pr_inf("%s: cannot access /dev/shm for writes, errno=%d (%s) skipping stressor\n",
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+ args->name, errno, strerror(errno));
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+ return EXIT_NO_RESOURCE;
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+ }
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+#endif
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+
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addrs = calloc(shm_posix_objects, sizeof(*addrs));
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if (!addrs) {
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pr_fail("%s: calloc on addrs failed, out of memory\n", args->name);
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--
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2.38.1
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