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https://github.com/Motorhead1991/qemu.git
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9a0dd4b3e4
Improve tracing of 9p 'Topen' request type by showing open() flags as human-readable text. E.g. trace output: v9fs_open tag 0 id 12 fid 2 mode 100352 would become: v9fs_open tag=0 id=12 fid=2 mode=100352(RDONLY|NONBLOCK|DIRECTORY| TMPFILE|NDELAY) Therefor add a new utility function qemu_open_flags_tostr() that converts numeric open() flags from host's native O_* flag constants to a string presentation. 9p2000.L and 9p2000.u protocol variants use different numeric 'mode' constants for 'Topen' requests. Instead of writing string conversion code for both protocol variants, use the already existing conversion functions that convert the mode flags from respective protocol constants to host's native open() numeric flag constants and pass that result to the new string conversion function qemu_open_flags_tostr(). Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com> Message-Id: <E1tTgDR-000oRr-9g@kylie.crudebyte.com>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "qemu/osdep.h"
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#include "9p-util.h"
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#include <glib/gstrfuncs.h>
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char *qemu_open_flags_tostr(int flags)
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{
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int acc = flags & O_ACCMODE;
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return g_strconcat(
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(acc == O_WRONLY) ? "WRONLY" : (acc == O_RDONLY) ? "RDONLY" : "RDWR",
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(flags & O_CREAT) ? "|CREAT" : "",
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(flags & O_EXCL) ? "|EXCL" : "",
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(flags & O_NOCTTY) ? "|NOCTTY" : "",
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(flags & O_TRUNC) ? "|TRUNC" : "",
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(flags & O_APPEND) ? "|APPEND" : "",
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(flags & O_NONBLOCK) ? "|NONBLOCK" : "",
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(flags & O_DSYNC) ? "|DSYNC" : "",
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#ifdef O_DIRECT
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(flags & O_DIRECT) ? "|DIRECT" : "",
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#endif
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(flags & O_LARGEFILE) ? "|LARGEFILE" : "",
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(flags & O_DIRECTORY) ? "|DIRECTORY" : "",
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(flags & O_NOFOLLOW) ? "|NOFOLLOW" : "",
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#ifdef O_NOATIME
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(flags & O_NOATIME) ? "|NOATIME" : "",
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#endif
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#ifdef O_CLOEXEC
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(flags & O_CLOEXEC) ? "|CLOEXEC" : "",
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#endif
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#ifdef __O_SYNC
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(flags & __O_SYNC) ? "|SYNC" : "",
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#else
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((flags & O_SYNC) == O_SYNC) ? "|SYNC" : "",
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#endif
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#ifdef O_PATH
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(flags & O_PATH) ? "|PATH" : "",
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#endif
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#ifdef __O_TMPFILE
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(flags & __O_TMPFILE) ? "|TMPFILE" : "",
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#elif defined(O_TMPFILE)
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((flags & O_TMPFILE) == O_TMPFILE) ? "|TMPFILE" : "",
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#endif
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/* O_NDELAY is usually just an alias of O_NONBLOCK */
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#if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK
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(flags & O_NDELAY) ? "|NDELAY" : "",
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#endif
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NULL /* always last (required NULL termination) */
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);
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}
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