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posix: device_io: implement fdopen()

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Implement fdopen(), as required by the POSIX_DEVICE_IO Option
Group.

Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
This commit is contained in:
Chris Friedt 2024-06-15 12:02:22 -04:00 • committed by Henrik Brix Andersen
commit 399458e3b4
2 changed files with 19 additions and 0 deletions
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12
lib/os/fdtable.c
View file

@ -16,6 +16,7 @@
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <zephyr/posix/fcntl.h>
#include <zephyr/kernel.h>
@ -397,6 +398,17 @@ int zvfs_close(int fd)
return res;
}
FILE *zvfs_fdopen(int fd, const char *mode)
{
ARG_UNUSED(mode);
if (_check_fd(fd) < 0) {
return NULL;
}
return (FILE *)&fdtable[fd];
}
int zvfs_fstat(int fd, struct stat *buf)
{
if (_check_fd(fd) < 0) {

7
lib/posix/options/device_io.c
View file

@ -5,6 +5,7 @@
*/
#include <stddef.h>
#include <stdio.h>
#include <stdint.h>
#include <zephyr/posix/poll.h>
@ -13,6 +14,7 @@
/* prototypes for external, not-yet-public, functions in fdtable.c or fs.c */
int zvfs_close(int fd);
FILE *zvfs_fdopen(int fd, const char *mode);
int zvfs_open(const char *name, int flags);
ssize_t zvfs_read(int fd, void *buf, size_t sz, size_t *from_offset);
ssize_t zvfs_write(int fd, const void *buf, size_t sz, size_t *from_offset);
@ -45,6 +47,11 @@ int close(int fd)
FUNC_ALIAS(close, _close, int);
#endif
FILE *fdopen(int fd, const char *mode)
{
return zvfs_fdopen(fd, mode);
}
int open(const char *name, int flags, ...)
{
/* FIXME: necessarily need to check for O_CREAT and unpack ... if set */