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fs.c: use statfs/statvfs

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* ext/-test-/file/fs.c (get_fsname): return filesystem name by
  statfs/statvfs.  [ruby-core:68624] [Bug #10998]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50071 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-03-24 08:30:15 +00:00
parent 8ea6b7a137
commit acae106c7c
3 changed files with 66 additions and 38 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Tue Mar 24 17:30:12 2015 Nobuyoshi Nakada <nobu@ruby-lang.org>
* ext/-test-/file/fs.c (get_fsname): return filesystem name by
statfs/statvfs. [ruby-core:68624] [Bug #10998]
Tue Mar 24 16:46:02 2015 NAKAMURA Usaku <usa@ruby-lang.org>
* tool/redmine-backporter.rb: now doesn't required spaces just after

14
ext/-test-/file/extconf.rb
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@ -1,4 +1,18 @@
$INCFLAGS << " -I$(topdir) -I$(top_srcdir)"
headers = %w[sys/param.h sys/mount.h sys/vfs.h].select {|h| have_header(h)}
if have_type("struct statfs", headers)
have_struct_member("struct statfs", "f_fstypename", headers)
have_struct_member("struct statfs", "f_type", headers)
end
headers = %w[sys/statvfs.h]
if have_type("struct statvfs", headers)
have_struct_member("struct statvfs", "f_fstypename", headers)
have_struct_member("struct statvfs", "f_basetype", headers)
have_struct_member("struct statvfs", "f_type", headers)
end
$srcs = Dir[File.join($srcdir, "*.{#{SRC_EXT.join(%q{,})}}")]
inits = $srcs.map {|s| File.basename(s, ".*")}
inits.delete("init")

85
ext/-test-/file/fs.c
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@ -1,55 +1,64 @@
#include "ruby/ruby.h"
#include "ruby/io.h"
#ifdef __linux__
# define HAVE_GETMNTENT
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
#ifdef HAVE_GETMNTENT
# include <stdio.h>
# include <mntent.h>
#if defined HAVE_STRUCT_STATFS_F_FSTYPENAME
typedef struct statfs statfs_t;
# define STATFS(f, s) statfs((f), (s))
# define HAVE_STRUCT_STATFS_T_F_FSTYPENAME 1
#elif defined(HAVE_STRUCT_STATVFS_F_FSTYPENAME) /* NetBSD */
typedef struct statvfs statfs_t;
# define STATFS(f, s) statvfs((f), (s))
# define HAVE_STRUCT_STATFS_T_F_FSTYPENAME 1
#elif defined(HAVE_STRUCT_STATVFS_F_BASETYPE) /* AIX, HP-UX, Solaris */
typedef struct statvfs statfs_t;
# define STATFS(f, s) statvfs((f), (s))
# define HAVE_STRUCT_STATFS_T_F_FSTYPENAME 1
# define f_fstypename f_basetype
#elif defined HAVE_STRUCT_STATFS_F_TYPE
typedef struct statfs statfs_t;
# define STATFS(f, s) statfs((f), (s))
#elif defined HAVE_STRUCT_STATVFS_F_TYPE
typedef struct statvfs statfs_t;
# define STATFS(f, s) statvfs((f), (s))
#endif
VALUE
get_fsname(VALUE self, VALUE str)
{
#ifdef HAVE_GETMNTENT
const char *path;
struct mntent mntbuf;
static const int buflen = 4096;
char *buf = alloca(buflen);
int len = 0;
FILE *fp;
#define FSNAME_LEN 100
char name[FSNAME_LEN] = "";
#ifdef STATFS
statfs_t st;
# define CSTR(s) rb_str_new_cstr(s)
FilePathValue(str);
path = RSTRING_PTR(str);
fp = setmntent("/etc/mtab", "r");
if (!fp) rb_sys_fail("setmntent(/etb/mtab)");;
while (getmntent_r(fp, &mntbuf, buf, buflen)) {
int i;
char *mnt_dir = mntbuf.mnt_dir;
for (i=0; mnt_dir[i]; i++) {
if (mnt_dir[i] != path[i]) {
goto next_entry;
}
}
if (i >= len) {
len = i;
strlcpy(name, mntbuf.mnt_type, FSNAME_LEN);
}
next_entry:
;
str = rb_str_encode_ospath(str);
if (STATFS(StringValueCStr(str), &st) == -1) {
rb_sys_fail_str(str);
}
# ifdef HAVE_STRUCT_STATFS_T_F_FSTYPENAME
if (st.f_fstypename[0])
return CSTR(st.f_fstypename);
# endif
switch (st.f_type) {
case 0x9123683E: /* BTRFS_SUPER_MAGIC */
return CSTR("btrfs");
case 0x7461636f: /* OCFS2_SUPER_MAGIC */
return CSTR("ocfs");
case 0xEF53: /* EXT2_SUPER_MAGIC EXT3_SUPER_MAGIC EXT4_SUPER_MAGIC */
return CSTR("ext4");
case 0x58465342: /* XFS_SUPER_MAGIC */
return CSTR("xfs");
case 0x01021994: /* TMPFS_MAGIC */
return CSTR("tmpfs");
}
endmntent(fp);
if (!len) rb_sys_fail("no matching entry");;
return rb_str_new_cstr(name);
#else
return Qnil;
#endif
return Qnil;
}
void