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 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 #include <unistd.h>
  17 #include <fcntl.h>
  18 #include <errno.h>
  19
  20 #include "map.h"
  21 #include "mph.h"
  22
  23 G_BEGIN_DECLS
  24
  25 struct Mono_Posix_Syscall_Stat {
  26         /* dev_t */     mph_dev_t     st_dev;     /* device */
  27         /* ino_t */     mph_ino_t     st_ino;     /* inode */
  28         /* mode_t */    guint32       st_mode;    /* protection */
  29                         guint32       _padding_;  /* structure padding */
  30         /* nlink_t */   mph_nlink_t   st_nlink;   /* number of hard links */
  31         /* uid_t */     mph_uid_t     st_uid;     /* user ID of owner */
  32         /* gid_t */     mph_gid_t     st_gid;     /* group ID of owner */
  33         /* dev_t */     mph_dev_t     st_rdev;    /* device type (if inode device) */
  34         /* off_t */     mph_off_t     st_size;    /* total size, in bytes */
  35         /* blksize_t */ mph_blksize_t st_blksize; /* blocksize for filesystem I/O */
  36         /* blkcnt_t */  mph_blkcnt_t  st_blocks;  /* number of blocks allocated */
  37
  38         /* st_atime, st_mtime, and st_ctime are macros (!), so use a slightly
  39          * different name to appease CPP */
  40
  41         /* time_t */    mph_time_t    st_atime_;  /* time of last access */
  42         /* time_t */    mph_time_t    st_mtime_;  /* time of last modification */
  43         /* time_t */    mph_time_t    st_ctime_;  /* time of last status change */
  44 };
  45
  46 static int
  47 copy_stat (struct Mono_Posix_Syscall_Stat *to, struct stat *from)
  48 {
  49         if (Mono_Posix_ToFilePermissions (from->st_mode, &to->st_mode) == -1)
  50                 return -1;
  51         to->st_dev      = from->st_dev;
  52         to->st_ino      = from->st_ino;
  53         to->st_nlink    = from->st_nlink;
  54         to->st_uid      = from->st_uid;
  55         to->st_gid      = from->st_gid;
  56         to->st_rdev     = from->st_rdev;
  57         to->st_size     = from->st_size;
  58         to->st_blksize  = from->st_blksize;
  59         to->st_blocks   = from->st_blocks;
  60         to->st_atime_   = from->st_atime;
  61         to->st_mtime_   = from->st_mtime;
  62         to->st_ctime_   = from->st_ctime;
  63         return 0;
  64 }
  65
  66 gint32
  67 Mono_Posix_Syscall_stat (const char *file_name, struct Mono_Posix_Syscall_Stat *buf)
  68 {
  69         int r;
  70         struct stat _buf;
  71
  72         if (buf == NULL) {
  73                 errno = EFAULT;
  74                 return -1;
  75         }
  76         r = stat (file_name, &_buf);
  77         if (r != -1 && copy_stat (buf, &_buf) == -1)
  78                 r = -1;
  79         return r;
  80 }
  81
  82 gint32
  83 Mono_Posix_Syscall_fstat (int filedes, struct Mono_Posix_Syscall_Stat *buf)
  84 {
  85         int r;
  86         struct stat _buf;
  87
  88         if (buf == NULL) {
  89                 errno = EFAULT;
  90                 return -1;
  91         }
  92         r = fstat (filedes, &_buf);
  93         if (r != -1 && copy_stat (buf, &_buf) == -1)
  94                 r = -1;
  95         return r;
  96 }
  97
  98 gint32
  99 Mono_Posix_Syscall_lstat (const char *file_name, struct Mono_Posix_Syscall_Stat *buf)
 100 {
 101         int r;
 102         struct stat _buf;
 103
 104         if (buf == NULL) {
 105                 errno = EFAULT;
 106                 return -1;
 107         }
 108         r = lstat (file_name, &_buf);
 109         if (r != -1 && copy_stat (buf, &_buf) == -1)
 110                 r = -1;
 111         return r;
 112 }
 113
 114 gint32
 115 Mono_Posix_Syscall_mknod (const char *pathname, guint32 mode, mph_dev_t dev)
 116 {
 117         if (Mono_Posix_FromFilePermissions (mode, &mode) == -1)
 118                 return -1;
 119         return mknod (pathname, mode, dev);
 120 }
 121
 122 G_END_DECLS
 123
 124 /*
 125  * vim: noexpandtab
 126  */