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git://sourceware.org/git/newlib-cygwin.git
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96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
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/*
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* hl_fstat.c -- provide _fstat().
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*
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* Copyright (c) 2024 Synopsys Inc.
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*
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*/
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#include <errno.h>
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#include <stdarg.h>
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#include <stdint.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "hl_toolchain.h"
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#include "hl_api.h"
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/* Hostlink IO version of struct stat. */
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struct _hl_stat {
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uint32_t hl_dev; /* ID of device containing file. */
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uint16_t hl_ino; /* inode number. */
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uint16_t hl_mode; /* File type and access mode. */
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int16_t hl_nlink; /* Number of hard links. */
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int16_t hl_uid; /* Owner's UID. */
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int16_t hl_gid; /* Owner's GID. */
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uint8_t hl_pad[2]; /* Padding to match simulator struct. */
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uint32_t hl_rdev; /* Device ID (if special file). */
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int32_t hl_size; /* Size in bytes. */
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int32_t hl_atime; /* Access time. */
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int32_t hl_mtime; /* Modification time. */
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int32_t hl_ctime; /* Creation time. */
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} __packed;
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/* Map Hostlink version of stat struct into newlib's one. */
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static __always_inline void
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_hl_fstat_map (const struct _hl_stat *hl_stat, struct stat *stat)
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{
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stat->st_dev = hl_stat->hl_dev;
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stat->st_ino = hl_stat->hl_ino;
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stat->st_mode = hl_stat->hl_mode;
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stat->st_nlink = hl_stat->hl_nlink;
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stat->st_uid = hl_stat->hl_uid;
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stat->st_gid = hl_stat->hl_gid;
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stat->st_rdev = hl_stat->hl_rdev;
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stat->st_size = hl_stat->hl_size;
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stat->st_atime = hl_stat->hl_atime;
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stat->st_mtime = hl_stat->hl_mtime;
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stat->st_ctime = hl_stat->hl_ctime;
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}
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/* Get host file info. Implements HL_GNUIO_EXT_FSTAT. */
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static __always_inline int
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_hl_fstat (int fd, struct stat *buf)
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{
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struct _hl_stat hl_stat;
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int32_t ret;
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uint32_t host_errno;
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/* Special version of hostlink - retuned values are passed
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* through inargs.
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*/
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host_errno = _user_hostlink (HL_GNUIO_EXT_VENDOR_ID, HL_GNUIO_EXT_FSTAT,
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"iii",
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(uint32_t) fd,
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(uint32_t) &hl_stat,
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(uint32_t) &ret);
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if (ret < 0)
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{
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errno = host_errno;
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return ret;
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}
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_hl_fstat_map (&hl_stat, buf);
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_hl_delete ();
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return ret;
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}
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int
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_fstat (int fd, struct stat *buf)
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{
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return _hl_fstat (fd, buf);
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}
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