diff options
Diffstat (limited to 'lib/mlibc/options/posix/generic/fcntl-stubs.cpp')
-rw-r--r-- | lib/mlibc/options/posix/generic/fcntl-stubs.cpp | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/lib/mlibc/options/posix/generic/fcntl-stubs.cpp b/lib/mlibc/options/posix/generic/fcntl-stubs.cpp new file mode 100644 index 0000000..66e2d12 --- /dev/null +++ b/lib/mlibc/options/posix/generic/fcntl-stubs.cpp @@ -0,0 +1,108 @@ + +#include <errno.h> +#include <bits/ensure.h> +#include <fcntl.h> +#include <stdarg.h> + +#include <mlibc/debug.hpp> +#include <mlibc/posix-sysdeps.hpp> + +int creat(const char *pathname, mode_t mode) { + return open(pathname, O_CREAT|O_WRONLY|O_TRUNC, mode); +} + +int fallocate(int, int, off_t, off_t) { + mlibc::infoLogger() << "mlibc: fallocate() is a no-op" << frg::endlog; + errno = ENOSYS; + return -1; +} + +int fcntl(int fd, int command, ...) { + va_list args; + va_start(args, command); + int result; + MLIBC_CHECK_OR_ENOSYS(mlibc::sys_fcntl, -1); + if(int e = mlibc::sys_fcntl(fd, command, args, &result); e) { + errno = e; + return -1; + } + va_end(args); + return result; +} + +int openat(int dirfd, const char *pathname, int flags, ...) { + va_list args; + va_start(args, flags); + mode_t mode = 0; + int fd; + + if((flags & (O_CREAT | O_TMPFILE))) + mode = va_arg(args, mode_t); + + MLIBC_CHECK_OR_ENOSYS(mlibc::sys_openat, -1); + if(int e = mlibc::sys_openat(dirfd, pathname, flags, mode, &fd); e) { + errno = e; + return -1; + } + va_end(args); + return fd; +} + +int posix_fadvise(int fd, off_t offset, off_t length, int advice) { + if(!mlibc::sys_fadvise) { + mlibc::infoLogger() << "mlibc: fadvise() ignored due to missing sysdep" << frg::endlog; + return 0; + } + + // posix_fadvise() returns an error instead of setting errno. + return mlibc::sys_fadvise(fd, offset, length, advice); +} + +int posix_fallocate(int fd, off_t offset, off_t size) { + // posix_fallocate() returns an error instead of setting errno. + if(!mlibc::sys_fallocate) { + MLIBC_MISSING_SYSDEP(); + return ENOSYS; + } + return mlibc::sys_fallocate(fd, offset, size); +} + +// This is a linux extension +int name_to_handle_at(int, const char *, struct file_handle *, int *, int) { + __ensure(!"Not implemented"); + __builtin_unreachable(); +} + +int open_by_handle_at(int, struct file_handle *, int) { + __ensure(!"Not implemented"); + __builtin_unreachable(); +} + +ssize_t splice(int, off_t *, int, off_t *, size_t, unsigned int) { + __ensure(!"Not implemented"); + __builtin_unreachable(); +} + +ssize_t vmsplice(int, const struct iovec *, size_t, unsigned int) { + __ensure(!"Not implemented"); + __builtin_unreachable(); +} + +int open(const char *pathname, int flags, ...) { + mode_t mode = 0; + + if ((flags & O_CREAT) || (flags & O_TMPFILE)) { + va_list args; + va_start(args, flags); + mode = va_arg(args, mode_t); + va_end(args); + } + + int fd; + if(int e = mlibc::sys_open(pathname, flags, mode, &fd); e) { + errno = e; + return -1; + } + return fd; +} + |