[linux] Add most of the linux api

Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/arch/x86/core/linux/linux_api.c b/src/arch/x86/core/linux/linux_api.c
new file mode 100644 (file)
index 0000000..e578687
--- /dev/null
+++ b/src/arch/x86/core/linux/linux_api.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2010 Piotr Jaroszyński <p.jaroszynski@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+FILE_LICENCE(GPL2_OR_LATER);
+
+/** @file
+ *
+ * Implementation of most of the linux API.
+ */
+
+#include <linux_api.h>
+
+#include <stdarg.h>
+#include <asm/unistd.h>
+#include <string.h>
+
+int linux_open(const char *pathname, int flags)
+{
+       return linux_syscall(__NR_open, pathname, flags);
+}
+
+int linux_close(int fd)
+{
+       return linux_syscall(__NR_close, fd);
+}
+
+ssize_t linux_read(int fd, void *buf, size_t count)
+{
+       return linux_syscall(__NR_read, fd, buf, count);
+}
+
+ssize_t linux_write(int fd, const void *buf, size_t count)
+{
+       return linux_syscall(__NR_write, fd, buf, count);
+}
+
+int linux_fcntl(int fd, int cmd, ...)
+{
+       long arg;
+       va_list list;
+
+       va_start(list, cmd);
+       arg = va_arg(list, long);
+       va_end(list);
+
+       return linux_syscall(__NR_fcntl, fd, cmd, arg);
+}
+
+int linux_ioctl(int fd, int request, ...)
+{
+       void *arg;
+       va_list list;
+
+       va_start(list, request);
+       arg = va_arg(list, void *);
+       va_end(list);
+
+       return linux_syscall(__NR_ioctl, fd, request, arg);
+}
+
+int linux_poll(struct pollfd *fds, nfds_t nfds, int timeout)
+{
+       return linux_syscall(__NR_poll, fds, nfds, timeout);
+}
+
+int linux_nanosleep(const struct timespec *req, struct timespec *rem)
+{
+       return linux_syscall(__NR_nanosleep, req, rem);
+}
+
+int linux_usleep(useconds_t usec)
+{
+       struct timespec ts = {
+               .tv_sec = (long) (usec / 1000000),
+               .tv_nsec = (long) (usec % 1000000) * 1000ul
+       };
+
+       return linux_nanosleep(&ts, NULL);
+}
+
+int linux_gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+       return linux_syscall(__NR_gettimeofday, tv, tz);
+}
+
+void *linux_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset)
+{
+       return (void *)linux_syscall(__SYSCALL_mmap, addr, length, prot, flags, fd, offset);
+}
+
+void *linux_mremap(void *old_address, size_t old_size, size_t new_size, int flags)
+{
+       return (void *)linux_syscall(__NR_mremap, old_address, old_size, new_size, flags);
+}
+
+int linux_munmap(void *addr, size_t length)
+{
+       return linux_syscall(__NR_munmap, addr, length);
+}

diff --git a/src/arch/x86/core/linux/linux_strerror.c b/src/arch/x86/core/linux/linux_strerror.c
new file mode 100644 (file)
index 0000000..24c9b77
--- /dev/null
+++ b/src/arch/x86/core/linux/linux_strerror.c
@@ -0,0 +1,169 @@
+/*
+ * Copyright (C) 2010 Piotr Jaroszyński <p.jaroszynski@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+FILE_LICENCE(GPL2_OR_LATER);
+
+/** @file
+ *
+ * linux_strerror implementation
+ */
+
+#include <linux_api.h>
+#include <stdio.h>
+
+/** Error names from glibc */
+static const char *errors[] = {
+       "Success",
+       "Operation not permitted",
+       "No such file or directory",
+       "No such process",
+       "Interrupted system call",
+       "Input/output error",
+       "No such device or address",
+       "Argument list too long",
+       "Exec format error",
+       "Bad file descriptor",
+       "No child processes",
+       "Resource temporarily unavailable",
+       "Cannot allocate memory",
+       "Permission denied",
+       "Bad address",
+       "Block device required",
+       "Device or resource busy",
+       "File exists",
+       "Invalid cross-device link",
+       "No such device",
+       "Not a directory",
+       "Is a directory",
+       "Invalid argument",
+       "Too many open files in system",
+       "Too many open files",
+       "Inappropriate ioctl for device",
+       "Text file busy",
+       "File too large",
+       "No space left on device",
+       "Illegal seek",
+       "Read-only file system",
+       "Too many links",
+       "Broken pipe",
+       "Numerical argument out of domain",
+       "Numerical result out of range",
+       "Resource deadlock avoided",
+       "File name too long",
+       "No locks available",
+       "Function not implemented",
+       "Directory not empty",
+       "Too many levels of symbolic links",
+       "",
+       "No message of desired type",
+       "Identifier removed",
+       "Channel number out of range",
+       "Level 2 not synchronized",
+       "Level 3 halted",
+       "Level 3 reset",
+       "Link number out of range",
+       "Protocol driver not attached",
+       "No CSI structure available",
+       "Level 2 halted",
+       "Invalid exchange",
+       "Invalid request descriptor",
+       "Exchange full",
+       "No anode",
+       "Invalid request code",
+       "Invalid slot",
+       "",
+       "Bad font file format",
+       "Device not a stream",
+       "No data available",
+       "Timer expired",
+       "Out of streams resources",
+       "Machine is not on the network",
+       "Package not installed",
+       "Object is remote",
+       "Link has been severed",
+       "Advertise error",
+       "Srmount error",
+       "Communication error on send",
+       "Protocol error",
+       "Multihop attempted",
+       "RFS specific error",
+       "Bad message",
+       "Value too large for defined data type",
+       "Name not unique on network",
+       "File descriptor in bad state",
+       "Remote address changed",
+       "Can not access a needed shared library",
+       "Accessing a corrupted shared library",
+       ".lib section in a.out corrupted",
+       "Attempting to link in too many shared libraries",
+       "Cannot exec a shared library directly",
+       "Invalid or incomplete multibyte or wide character",
+       "Interrupted system call should be restarted",
+       "Streams pipe error",
+       "Too many users",
+       "Socket operation on non-socket",
+       "Destination address required",
+       "Message too long",
+       "Protocol wrong type for socket",
+       "Protocol not available",
+       "Protocol not supported",
+       "Socket type not supported",
+       "Operation not supported",
+       "Protocol family not supported",
+       "Address family not supported by protocol",
+       "Address already in use",
+       "Cannot assign requested address",
+       "Network is down",
+       "Network is unreachable",
+       "Network dropped connection on reset",
+       "Software caused connection abort",
+       "Connection reset by peer",
+       "No buffer space available",
+       "Transport endpoint is already connected",
+       "Transport endpoint is not connected",
+       "Cannot send after transport endpoint shutdown",
+       "Too many references: cannot splice",
+       "Connection timed out",
+       "Connection refused",
+       "Host is down",
+       "No route to host",
+       "Operation already in progress",
+       "Operation now in progress",
+       "Stale NFS file handle",
+       "Structure needs cleaning",
+       "Not a XENIX named type file",
+       "No XENIX semaphores available",
+       "Is a named type file",
+       "Remote I/O error",
+       "Disk quota exceeded",
+       "No medium found",
+       "Wrong medium type",
+};
+
+const char *linux_strerror(int errnum)
+{
+       static char errbuf[64];
+       static int errors_size = sizeof(errors) / sizeof(*errors);
+       
+       if (errnum >= errors_size || errnum < 0) {
+               snprintf(errbuf, sizeof(errbuf), "Error %#08x", errnum);
+               return errbuf;
+       } else {
+               return errors[errnum];
+       }
+}