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sandbox: Support file truncation with os_open()

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At present files are not truncated on writing. This is a useful feature.
Add support for this.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2018-10-01 11:55:07 -06:00
parent cdd140af5c
commit 50b288aca3
2 changed files with 3 additions and 0 deletions
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2
arch/sandbox/cpu/os.c
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@@ -85,6 +85,8 @@ int os_open(const char *pathname, int os_flags)
if (os_flags & OS_O_CREAT)
flags |= O_CREAT;
if (os_flags & OS_O_TRUNC)
flags |= O_TRUNC;
return open(pathname, flags, 0777);
}

1
include/os.h
View File

@@ -75,6 +75,7 @@ int os_open(const char *pathname, int flags);
#define OS_O_RDWR 2
#define OS_O_MASK 3 /* Mask for read/write flags */
#define OS_O_CREAT 0100
#define OS_O_TRUNC 01000
/**
* Access to the OS close() system call