From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001 From: Vladimir Azarov Date: Tue, 1 Oct 2024 15:47:05 +0200 Subject: Initial version --- src/stdio/fopen.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 src/stdio/fopen.c (limited to 'src/stdio/fopen.c') diff --git a/src/stdio/fopen.c b/src/stdio/fopen.c new file mode 100644 index 0000000..80bc341 --- /dev/null +++ b/src/stdio/fopen.c @@ -0,0 +1,31 @@ +#include "stdio_impl.h" +#include +#include +#include + +FILE *fopen(const char *restrict filename, const char *restrict mode) +{ + FILE *f; + int fd; + int flags; + + /* Check for valid initial mode character */ + if (!strchr("rwa", *mode)) { + errno = EINVAL; + return 0; + } + + /* Compute the flags to pass to open() */ + flags = __fmodeflags(mode); + + fd = sys_open(filename, flags, 0666); + if (fd < 0) return 0; + if (flags & O_CLOEXEC) + __syscall(SYS_fcntl, fd, F_SETFD, FD_CLOEXEC); + + f = __fdopen(fd, mode); + if (f) return f; + + __syscall(SYS_close, fd); + return 0; +} -- cgit v1.2.3