support/macros.c

   1 #include "mph.h"
   2 #include <sys/types.h>
   3 #include <sys/wait.h>
   4 #include <sys/stat.h>
   5 #include <unistd.h>
   6 #include <pwd.h>
   7 #include <grp.h>
   8 #include <errno.h>
   9 #include <dirent.h>
  10 #include <string.h>
  11 #include <glib.h>
  12 #include "mph.h" /* Don't remove or move after map.h! Works around issues with Android SDK unified headers */
  13 #include "map.h"
  14
  15 int wifexited (int status)
  16 {
  17         return WIFEXITED (status);
  18 }
  19
  20 int wexitstatus (int status)
  21 {
  22         return WEXITSTATUS (status);
  23 }
  24
  25 int wifsignaled (int status)
  26 {
  27         return WIFSIGNALED (status);
  28 }
  29
  30 int wtermsig (int status)
  31 {
  32         return WTERMSIG (status);
  33 }
  34
  35 int wifstopped (int status)
  36 {
  37         return WIFSTOPPED (status);
  38 }
  39
  40 int wstopsig (int status)
  41 {
  42         return WSTOPSIG (status);
  43 }
  44
  45 int helper_Mono_Posix_Stat(const char *filename, int dereference,
  46         int *device,
  47         int *inode,
  48         int *mode,
  49         int *nlinks,
  50         int *uid,
  51         int *gid,
  52         int *rdev,
  53         gint64 *size,
  54         gint64 *blksize,
  55         gint64 *blocks,
  56         gint64 *atime,
  57         gint64 *mtime,
  58         gint64 *ctime
  59         ) {
  60         int ret;
  61         struct stat buf;
  62
  63         if (!dereference)
  64                 ret = stat(filename, &buf);
  65         else
  66                 ret = lstat(filename, &buf);
  67
  68         if (ret) return ret;
  69
  70         *device = buf.st_dev;
  71         *inode = buf.st_ino;
  72         *mode = buf.st_mode;
  73         *nlinks = buf.st_nlink;
  74         *uid = buf.st_uid;
  75         *gid = buf.st_gid;
  76         *rdev = buf.st_rdev;
  77         *size = buf.st_size;
  78         *blksize = buf.st_blksize;
  79         *blocks = buf.st_blocks;
  80         *atime = buf.st_atime;
  81         *mtime = buf.st_mtime;
  82         *ctime = buf.st_ctime;
  83         return 0;
  84 }
  85
  86 char *helper_Mono_Posix_GetUserName(int uid) {
  87         struct passwd *p = getpwuid(uid);
  88         if (p == NULL) return NULL;
  89         return strdup (p->pw_name);
  90 }
  91 char *helper_Mono_Posix_GetGroupName(int gid) {
  92         struct group *p = getgrgid(gid);
  93         if (p == NULL) return NULL;
  94         return strdup (p->gr_name);
  95 }
  96
  97 char *helper_Mono_Posix_readdir(void *dir) {
  98         struct dirent* e = readdir((DIR*) dir);
  99         if (e == NULL) return NULL;
 100         return strdup (e->d_name);
 101 }
 102
 103 #if HAVE_GETPWNAM_R
 104 int helper_Mono_Posix_getpwnamuid (int mode, char *in_name, int in_uid,
 105         char **account,
 106         char **password,
 107         int *uid,
 108         int *gid,
 109         char **name,
 110         char **home,
 111         char **shell);
 112
 113 int helper_Mono_Posix_getpwnamuid (int mode, char *in_name, int in_uid,
 114         char **account,
 115         char **password,
 116         int *uid,
 117         int *gid,
 118         char **name,
 119         char **home,
 120         char **shell
 121         ) {
 122
 123         struct passwd pw, *pwp;
 124         char buf[4096];
 125         int ret;
 126
 127         if (mode == 0)
 128                 ret = getpwnam_r (in_name, &pw, buf, 4096, &pwp);
 129         else
 130                 ret = getpwuid_r (in_uid, &pw, buf, 4096, &pwp);
 131
 132         if (ret == 0 && pwp == NULL) {
 133                 // Don't know why this happens, but it does.
 134                 // ret == 0, errno == 0, but no record was found.
 135                 ret = ENOENT;
 136         }
 137
 138         if (ret) {
 139                 *account = NULL; // prevent marshalling unset pointers
 140                 *password = NULL;
 141                 *uid = 0;
 142                 *gid = 0;
 143                 *name = NULL;
 144                 *home = NULL;
 145                 *shell = NULL;
 146                 return ret;
 147         }
 148
 149         *account = pwp->pw_name;
 150         *password = pwp->pw_passwd;
 151         *uid = pwp->pw_uid;
 152         *gid = pwp->pw_gid;
 153         *name = pwp->pw_gecos;
 154         *home = pwp->pw_dir;
 155         *shell = pwp->pw_shell;
 156
 157         return 0;
 158 }
 159 #endif  /* def HAVE_GETPWNAM_R */
 160