From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965131AbbKCU26 (ORCPT ); Tue, 3 Nov 2015 15:28:58 -0500 Received: from mga03.intel.com ([134.134.136.65]:18465 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964859AbbKCUXO (ORCPT ); Tue, 3 Nov 2015 15:23:14 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,239,1444719600"; d="scan'208";a="677670376" From: Octavian Purdila To: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org, thehajime@gmail.com, Octavian Purdila Subject: [RFC PATCH 16/28] lkl tools: host lib: add lkl_strerror and lkl_printf Date: Tue, 3 Nov 2015 22:20:47 +0200 Message-Id: <1446582059-17355-17-git-send-email-octavian.purdila@intel.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1446582059-17355-1-git-send-email-octavian.purdila@intel.com> References: <1446582059-17355-1-git-send-email-octavian.purdila@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add basic utility functions for getting a string from a kernel error code and a fprintf like function that uses the host print operation. The latter is useful for informing the user about errors that occur in the host library. Signed-off-by: Octavian Purdila --- tools/lkl/include/lkl.h | 8 ++ tools/lkl/include/lkl_host.h | 7 ++ tools/lkl/lib/utils.c | 177 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 192 insertions(+) create mode 100644 tools/lkl/lib/utils.c diff --git a/tools/lkl/include/lkl.h b/tools/lkl/include/lkl.h index 2de5ed4..958614d 100644 --- a/tools/lkl/include/lkl.h +++ b/tools/lkl/include/lkl.h @@ -12,4 +12,12 @@ static inline long lkl_sys_lseek(unsigned int fd, __lkl__kernel_loff_t off, return lkl_sys_llseek(fd, off >> 32, off & 0xffffffff, res, whence); } +/** + * lkl_strerror - returns a string describing the given error code + * + * @err - error code + * @returns - string for the given error code + */ +const char *lkl_strerror(int err); + #endif diff --git a/tools/lkl/include/lkl_host.h b/tools/lkl/include/lkl_host.h index 8ee9ba0..9f1c270 100644 --- a/tools/lkl/include/lkl_host.h +++ b/tools/lkl/include/lkl_host.h @@ -6,4 +6,11 @@ extern struct lkl_host_operations lkl_host_ops; +/** + * lkl_printf - print a message via the host print operation + * + * @fmt - printf like format string + */ +int lkl_printf(const char *fmt, ...); + #endif diff --git a/tools/lkl/lib/utils.c b/tools/lkl/lib/utils.c new file mode 100644 index 0000000..f8b676f --- /dev/null +++ b/tools/lkl/lib/utils.c @@ -0,0 +1,177 @@ +#include +#include +#include + +static const char * const lkl_err_strings[] = { + "Success", + "Operation not permitted", + "No such file or directory", + "No such process", + "Interrupted system call", + "I/O error", + "No such device or address", + "Argument list too long", + "Exec format error", + "Bad file number", + "No child processes", + "Try again", + "Out of memory", + "Permission denied", + "Bad address", + "Block device required", + "Device or resource busy", + "File exists", + "Cross-device link", + "No such device", + "Not a directory", + "Is a directory", + "Invalid argument", + "File table overflow", + "Too many open files", + "Not a typewriter", + "Text file busy", + "File too large", + "No space left on device", + "Illegal seek", + "Read-only file system", + "Too many links", + "Broken pipe", + "Math argument out of domain of func", + "Math result not representable", + "Resource deadlock would occur", + "File name too long", + "No record locks available", + "Invalid system call number", + "Directory not empty", + "Too many symbolic links encountered", + "Bad error code", /* EWOULDBLOCK is EAGAIN */ + "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 error code", /* EDEADLOCK is EDEADLK */ + "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", + "Not a data 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", + "Illegal byte sequence", + "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 on transport endpoint", + "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 because of 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 file handle", + "Structure needs cleaning", + "Not a XENIX named type file", + "No XENIX semaphores available", + "Is a named type file", + "Remote I/O error", + "Quota exceeded", + "No medium found", + "Wrong medium type", + "Operation Canceled", + "Required key not available", + "Key has expired", + "Key has been revoked", + "Key was rejected by service", + "Owner died", + "State not recoverable", + "Operation not possible due to RF-kill", + "Memory page has hardware error", +}; + +const char *lkl_strerror(int err) +{ + if (err < 0) + err = -err; + + if (err >= sizeof(lkl_err_strings) / sizeof(const char *)) + return "Bad error code"; + + return lkl_err_strings[err]; +} + +int lkl_printf(const char *fmt, ...) +{ + char *buffer; + va_list args, copy; + int n; + + va_start(args, fmt); + va_copy(copy, args); + n = vsnprintf(NULL, 0, fmt, copy); + va_end(copy); + + buffer = lkl_host_ops.mem_alloc(n + 1); + if (!buffer) { + va_end(args); + return 0; + } + vsnprintf(buffer, n + 1, fmt, args); + va_end(args); + + lkl_host_ops.print(buffer, n); + + lkl_host_ops.mem_free(buffer); + + return n; +} -- 2.1.0