support/sys-stat.c

   1 /*
   2  * <sys/stat.h> wrapper functions.
   3  *
   4  * Authors:
   5  *   Jonathan Pryor (jonpryor@vt.edu)
   6  *
   7  * Copyright (C) 2004-2006 Jonathan Pryor
   8  */
   9
  10 #ifndef _GNU_SOURCE
  11 #define _GNU_SOURCE
  12 #endif /* ndef _GNU_SOURCE */
  13
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16 #ifdef HAVE_UNISTD_H
  17 #include <unistd.h>
  18 #endif
  19 #include <fcntl.h>
  20 #include <errno.h>
  21
  22 #include "map.h"
  23 #include "mph.h"
  24
  25 G_BEGIN_DECLS
  26
  27 int
  28 Mono_Posix_FromStat (struct Mono_Posix_Stat *from, void *_to)
  29 {
  30         struct stat *to = _to;
  31         memset (to, 0, sizeof(*to));
  32
  33         to->st_dev         = from->st_dev;
  34         to->st_ino         = from->st_ino;
  35
  36         unsigned int to_st_mode;
  37         if (Mono_Posix_FromFilePermissions (from->st_mode, &to_st_mode) != 0) {
  38                 return -1;
  39         }
  40
  41         to->st_mode        = to_st_mode;
  42         to->st_nlink       = from->st_nlink;
  43         to->st_uid         = from->st_uid;
  44         to->st_gid         = from->st_gid;
  45         to->st_rdev        = from->st_rdev;
  46         to->st_size        = from->st_size;
  47 #ifndef HOST_WIN32
  48         to->st_blksize     = from->st_blksize;
  49         to->st_blocks      = from->st_blocks;
  50 #endif
  51         to->st_atime       = from->st_atime_;
  52         to->st_mtime       = from->st_mtime_;
  53         to->st_ctime       = from->st_ctime_;
  54 #ifdef HAVE_STRUCT_STAT_ST_ATIM
  55         to->st_atim.tv_nsec = from->st_atime_nsec;
  56 #endif
  57 #ifdef HAVE_STRUCT_STAT_ST_MTIM
  58         to->st_mtim.tv_nsec = from->st_mtime_nsec;
  59 #endif
  60 #ifdef HAVE_STRUCT_STAT_ST_CTIM
  61         to->st_ctim.tv_nsec = from->st_ctime_nsec;
  62 #endif
  63
  64         return 0;
  65 }
  66
  67 int
  68 Mono_Posix_ToStat (void *_from, struct Mono_Posix_Stat *to)
  69 {
  70         struct stat *from = _from;
  71         memset (to, 0, sizeof(*to));
  72
  73         to->st_dev        = from->st_dev;
  74         to->st_ino        = from->st_ino;
  75         if (Mono_Posix_ToFilePermissions (from->st_mode, &to->st_mode) != 0) {
  76                 return -1;
  77         }
  78         to->st_nlink      = from->st_nlink;
  79         to->st_uid        = from->st_uid;
  80         to->st_gid        = from->st_gid;
  81         to->st_rdev       = from->st_rdev;
  82         to->st_size       = from->st_size;
  83 #ifndef HOST_WIN32
  84         to->st_blksize    = from->st_blksize;
  85         to->st_blocks     = from->st_blocks;
  86 #endif
  87         to->st_atime_     = from->st_atime;
  88         to->st_mtime_     = from->st_mtime;
  89         to->st_ctime_     = from->st_ctime;
  90 #ifdef HAVE_STRUCT_STAT_ST_ATIM
  91         to->st_atime_nsec = from->st_atim.tv_nsec;
  92 #endif
  93 #ifdef HAVE_STRUCT_STAT_ST_MTIM
  94         to->st_mtime_nsec = from->st_mtim.tv_nsec;
  95 #endif
  96 #ifdef HAVE_STRUCT_STAT_ST_CTIM
  97         to->st_ctime_nsec = from->st_ctim.tv_nsec;
  98 #endif
  99
 100         return 0;
 101 }
 102
 103 gint32
 104 Mono_Posix_Syscall_stat (const char *file_name, struct Mono_Posix_Stat *buf)
 105 {
 106         int r;
 107         struct stat _buf;
 108
 109         if (buf == NULL) {
 110                 errno = EFAULT;
 111                 return -1;
 112         }
 113         r = stat (file_name, &_buf);
 114         if (r != -1 && Mono_Posix_ToStat (&_buf, buf) == -1)
 115                 r = -1;
 116         return r;
 117 }
 118
 119 gint32
 120 Mono_Posix_Syscall_fstat (int filedes, struct Mono_Posix_Stat *buf)
 121 {
 122         int r;
 123         struct stat _buf;
 124
 125         if (buf == NULL) {
 126                 errno = EFAULT;
 127                 return -1;
 128         }
 129         r = fstat (filedes, &_buf);
 130         if (r != -1 && Mono_Posix_ToStat (&_buf, buf) == -1)
 131                 r = -1;
 132         return r;
 133 }
 134
 135 #ifndef HOST_WIN32
 136 gint32
 137 Mono_Posix_Syscall_lstat (const char *file_name, struct Mono_Posix_Stat *buf)
 138 {
 139         int r;
 140         struct stat _buf;
 141
 142         if (buf == NULL) {
 143                 errno = EFAULT;
 144                 return -1;
 145         }
 146         r = lstat (file_name, &_buf);
 147         if (r != -1 && Mono_Posix_ToStat (&_buf, buf) == -1)
 148                 r = -1;
 149         return r;
 150 }
 151 #endif
 152
 153 #ifdef HAVE_FSTATAT
 154 gint32
 155 Mono_Posix_Syscall_fstatat (gint32 dirfd, const char *file_name, struct Mono_Posix_Stat *buf, gint32 flags)
 156 {
 157         int r;
 158         struct stat _buf;
 159
 160         if (Mono_Posix_FromAtFlags (flags, &flags) == -1)
 161                 return -1;
 162
 163         if (buf == NULL) {
 164                 errno = EFAULT;
 165                 return -1;
 166         }
 167         r = fstatat (dirfd, file_name, &_buf, flags);
 168         if (r != -1 && Mono_Posix_ToStat (&_buf, buf) == -1)
 169                 r = -1;
 170         return r;
 171 }
 172 #endif
 173
 174 #ifndef HOST_WIN32
 175 gint32
 176 Mono_Posix_Syscall_mknod (const char *pathname, guint32 mode, mph_dev_t dev)
 177 {
 178         if (Mono_Posix_FromFilePermissions (mode, &mode) == -1)
 179                 return -1;
 180         return mknod (pathname, mode, dev);
 181 }
 182 #endif
 183
 184 #ifdef HAVE_MKNODAT
 185 gint32
 186 Mono_Posix_Syscall_mknodat (int dirfd, const char *pathname, guint32 mode, mph_dev_t dev)
 187 {
 188         if (Mono_Posix_FromFilePermissions (mode, &mode) == -1)
 189                 return -1;
 190         return mknodat (dirfd, pathname, mode, dev);
 191 }
 192 #endif
 193
 194 G_END_DECLS
 195
 196 gint64
 197 Mono_Posix_Syscall_get_utime_now ()
 198 {
 199 #ifdef UTIME_NOW
 200         return UTIME_NOW;
 201 #else
 202         return -1;
 203 #endif
 204 }
 205
 206 gint64
 207 Mono_Posix_Syscall_get_utime_omit ()
 208 {
 209 #ifdef UTIME_OMIT
 210         return UTIME_OMIT;
 211 #else
 212         return -1;
 213 #endif
 214 }
 215
 216 #if defined(HAVE_FUTIMENS) || defined(HAVE_UTIMENSAT)
 217 static inline struct timespec*
 218 copy_utimens (struct timespec* to, struct Mono_Posix_Timespec *from)
 219 {
 220         if (from) {
 221                 to[0].tv_sec  = from[0].tv_sec;
 222                 to[0].tv_nsec = from[0].tv_nsec;
 223                 to[1].tv_sec  = from[1].tv_sec;
 224                 to[1].tv_nsec = from[1].tv_nsec;
 225                 return to;
 226         }
 227
 228         return NULL;
 229 }
 230 #endif
 231
 232 #ifdef HAVE_FUTIMENS
 233 gint32
 234 Mono_Posix_Syscall_futimens(int fd, struct Mono_Posix_Timespec *tv)
 235 {
 236         struct timespec _tv[2];
 237         struct timespec *ptv;
 238
 239         ptv = copy_utimens (_tv, tv);
 240
 241         return futimens (fd, ptv);
 242 }
 243 #endif /* def HAVE_FUTIMENS */
 244
 245 #ifdef HAVE_UTIMENSAT
 246 gint32
 247 Mono_Posix_Syscall_utimensat(int dirfd, const char *pathname, struct Mono_Posix_Timespec *tv, int flags)
 248 {
 249         struct timespec _tv[2];
 250         struct timespec *ptv;
 251
 252         ptv = copy_utimens (_tv, tv);
 253
 254         return utimensat (dirfd, pathname, ptv, flags);
 255 }
 256 #endif /* def HAVE_UTIMENSAT */
 257
 258
 259 /*
 260  * vim: noexpandtab
 261  */