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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2009-07-14 07:13:11 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2009-07-14 07:13:11 +0000 |
commit | 9681409e3691037c11c19052295616454f74c936 (patch) | |
tree | ebb308e156ad0b3b74c4f65a9ff54d7c0b1da15c /io.c | |
parent | ed586352292f331f2166205c0d7b99b69eab4ba4 (diff) | |
download | ruby-9681409e3691037c11c19052295616454f74c936.tar.gz |
* io.c (rb_io_initialize): check if the descriptor can be accessed
in the specified open mode. [ruby-dev:38571]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24102 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'io.c')
-rw-r--r-- | io.c | 22 |
1 files changed, 17 insertions, 5 deletions
@@ -6342,7 +6342,11 @@ rb_io_initialize(int argc, VALUE *argv, VALUE io) int fd, fmode, oflags = O_RDONLY; convconfig_t convconfig; VALUE opt; +#if defined(HAVE_FCNTL) && defined(F_GETFL) + int ofmode; +#else struct stat st; +#endif rb_secure(4); @@ -6351,15 +6355,23 @@ rb_io_initialize(int argc, VALUE *argv, VALUE io) rb_io_extract_modeenc(&vmode, 0, opt, &oflags, &fmode, &convconfig); fd = NUM2INT(fnum); +#if defined(HAVE_FCNTL) && defined(F_GETFL) + oflags = fcntl(fd, F_GETFL); + if (oflags == -1) rb_sys_fail(0); +#else if (fstat(fd, &st) == -1) rb_sys_fail(0); +#endif UPDATE_MAXFD(fd); - if (NIL_P(vmode)) { #if defined(HAVE_FCNTL) && defined(F_GETFL) - oflags = fcntl(fd, F_GETFL); - if (oflags == -1) rb_sys_fail(0); - fmode = rb_io_oflags_fmode(oflags); -#endif + ofmode = rb_io_oflags_fmode(oflags); + if (NIL_P(vmode)) { + fmode = ofmode; + } + else if ((~ofmode & fmode) & FMODE_READWRITE) { + VALUE error = INT2FIX(EINVAL); + rb_exc_raise(rb_class_new_instance(1, &error, rb_eSystemCallError)); } +#endif MakeOpenFile(io, fp); fp->fd = fd; fp->mode = fmode; |