diff options
Diffstat (limited to 'newlib/libc/reent/open64r.c')
| -rw-r--r-- | newlib/libc/reent/open64r.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/newlib/libc/reent/open64r.c b/newlib/libc/reent/open64r.c new file mode 100644 index 000000000..d5ec7bcc5 --- /dev/null +++ b/newlib/libc/reent/open64r.c @@ -0,0 +1,69 @@ +#ifdef __LARGE64_FILES + +/* Reentrant versions of open system call. */ + +#include <reent.h> +#include <unistd.h> +#include <fcntl.h> +#include <_syslist.h> + +/* Some targets provides their own versions of this functions. Those + targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */ + +#ifdef _REENT_ONLY +#ifndef REENTRANT_SYSCALLS_PROVIDED +#define REENTRANT_SYSCALLS_PROVIDED +#endif +#endif + +#ifndef REENTRANT_SYSCALLS_PROVIDED + +/* We use the errno variable used by the system dependent layer. */ +#undef errno +extern int errno; + +/* +FUNCTION + <<_open64_r>>---Reentrant version of open64 + +INDEX + _open64_r + +ANSI_SYNOPSIS + #include <reent.h> + int _open64_r(struct _reent *<[ptr]>, + const char *<[file]>, int <[flags]>, int <[mode]>); + +TRAD_SYNOPSIS + #include <reent.h> + int _open64_r(<[ptr]>, <[file]>, <[flags]>, <[mode]>) + struct _reent *<[ptr]>; + char *<[file]>; + int <[flags]>; + int <[mode]>; + +DESCRIPTION + This is a reentrant version of <<open64>>. It + takes a pointer to the global data block, which holds + <<errno>>. This function only exists on systems with + large file support. +*/ + +int +_open64_r (ptr, file, flags, mode) + struct _reent *ptr; + _CONST char *file; + int flags; + int mode; +{ + int ret; + + errno = 0; + if ((ret = _open64 (file, flags, mode)) == -1 && errno != 0) + ptr->_errno = errno; + return ret; +} + +#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */ + +#endif /* __LARGE64_FILES */ |