S_openn_setup(pTHX_ GV *gv, char *mode, PerlIO **saveifp, PerlIO **saveofp,
int *savefd, char *savetype)
{
- dVAR;
IO * const io = GvIOn(gv);
PERL_ARGS_ASSERT_OPENN_SETUP;
if (result == EOF && old_fd > PL_maxsysfd) {
/* Why is this not Perl_warn*() call ? */
PerlIO_printf(Perl_error_log,
- "Warning: unable to close filehandle %"HEKf" properly.\n",
+ "Warning: unable to close filehandle %" HEKf
+ " properly.\n",
HEKfARG(GvENAME_HEK(gv))
);
}
int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
I32 num_svs)
{
- dVAR;
+ PERL_ARGS_ASSERT_DO_OPENN;
+
+ if (as_raw) {
+ /* sysopen style args, i.e. integer mode and permissions */
+
+ if (num_svs != 0) {
+ Perl_croak(aTHX_ "panic: sysopen with multiple args, num_svs=%ld",
+ (long) num_svs);
+ }
+ return do_open_raw(gv, oname, len, rawmode, rawperm, NULL);
+ }
+ return do_open6(gv, oname, len, supplied_fp, svp, num_svs);
+}
+
+bool
+Perl_do_open_raw(pTHX_ GV *gv, const char *oname, STRLEN len,
+ int rawmode, int rawperm, Stat_t *statbufp)
+{
PerlIO *saveifp;
PerlIO *saveofp;
int savefd;
IO * const io = openn_setup(gv, mode, &saveifp, &saveofp, &savefd, &savetype);
int writing = 0;
PerlIO *fp;
- int fd;
- bool was_fdopen = FALSE;
- char *type = NULL;
- PERL_ARGS_ASSERT_DO_OPENN;
+ PERL_ARGS_ASSERT_DO_OPEN_RAW;
- if (as_raw) {
+ /* For ease of blame back to 5.000, keep the existing indenting. */
+ {
/* sysopen style args, i.e. integer mode and permissions */
STRLEN ix = 0;
const int appendtrunc =
int ismodifying;
SV *namesv;
- if (num_svs != 0) {
- Perl_croak(aTHX_ "panic: sysopen with multiple args, num_svs=%ld",
- (long) num_svs);
- }
/* It's not always
O_RDONLY 0
IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
namesv = newSVpvn_flags(oname, len, SVs_TEMP);
- type = NULL;
- fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, 1, &namesv);
+ fp = PerlIO_openn(aTHX_ NULL, mode, -1, rawmode, rawperm, NULL, 1, &namesv);
}
- else {
+ return openn_cleanup(gv, io, fp, mode, oname, saveifp, saveofp, savefd,
+ savetype, writing, 0, NULL, statbufp);
+}
+
+bool
+Perl_do_open6(pTHX_ GV *gv, const char *oname, STRLEN len,
+ PerlIO *supplied_fp, SV **svp, U32 num_svs)
+{
+ PerlIO *saveifp;
+ PerlIO *saveofp;
+ int savefd;
+ char savetype;
+ char mode[PERL_MODE_MAX]; /* file mode ("r\0", "rb\0", "ab\0" etc.) */
+ IO * const io = openn_setup(gv, mode, &saveifp, &saveofp, &savefd, &savetype);
+ int writing = 0;
+ PerlIO *fp;
+ bool was_fdopen = FALSE;
+ char *type = NULL;
+
+ PERL_ARGS_ASSERT_DO_OPEN6;
+
+ /* For ease of blame back to 5.000, keep the existing indenting. */
+ {
/* Regular (non-sys) open */
char *name;
STRLEN olen = len;
STRLEN nlen = 0;
/* New style explicit name, type is just mode and layer info */
#ifdef USE_STDIO
- if (SvROK(*svp) && !strchr(oname,'&')) {
+ if (SvROK(*svp) && !memchr(oname, '&', len)) {
if (ckWARN(WARN_IO))
Perl_warner(aTHX_ packWARN(WARN_IO),
"Can't open a reference");
SETERRNO(EINVAL, LIB_INVARG);
+ fp = NULL;
goto say_false;
}
#endif /* USE_STDIO */
p = (SvOK(*svp) || SvGMAGICAL(*svp)) ? SvPV(*svp, nlen) : NULL;
- if (p && !IS_SAFE_PATHNAME(p, nlen, "open"))
+ if (p && !IS_SAFE_PATHNAME(p, nlen, "open")) {
+ fp = NULL;
goto say_false;
+ }
name = p ? savepvn(p, nlen) : savepvs("");
if (ckWARN(WARN_PIPE))
Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
errno = EPIPE;
+ fp = NULL;
goto say_false;
}
if (!(*name == '-' && name[1] == '\0') || num_svs)
if (num_svs) {
if (*type) {
if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
+ fp = NULL;
goto say_false;
}
}
else {
PerlIO *that_fp = NULL;
int wanted_fd;
+ UV uv;
if (num_svs > 1) {
/* diag_listed_as: More than one argument to '%s' open */
Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
wanted_fd = SvUV(*svp);
num_svs = 0;
}
- else if (isDIGIT(*type)) {
- wanted_fd = atoi(type);
+ else if (isDIGIT(*type)
+ && grok_atoUV(type, &uv, NULL)
+ && uv <= INT_MAX
+ ) {
+ wanted_fd = (int)uv;
}
else {
const IO* thatio;
#ifdef EINVAL
SETERRNO(EINVAL,SS_IVCHAN);
#endif
+ fp = NULL;
goto say_false;
}
if ((that_fp = IoIFP(thatio))) {
else if (IoTYPE(thatio) == IoTYPE_SOCKET)
IoTYPE(io) = IoTYPE_SOCKET;
}
- else
- wanted_fd = -1;
+ else {
+ SETERRNO(EBADF, RMS_IFI);
+ fp = NULL;
+ goto say_false;
+ }
}
if (!num_svs)
type = NULL;
if (ckWARN(WARN_PIPE))
Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
errno = EPIPE;
+ fp = NULL;
goto say_false;
}
if (!(*name == '-' && name[1] == '\0') || num_svs)
type++;
if (*type) {
if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
+ fp = NULL;
goto say_false;
}
}
}
}
}
+
+ say_false:
+ return openn_cleanup(gv, io, fp, mode, oname, saveifp, saveofp, savefd,
+ savetype, writing, was_fdopen, type, NULL);
+}
+
+/* Yes, this is ugly, but it's private, and I don't see a cleaner way to
+ simplify the two-headed public interface of do_openn. */
+static bool
+S_openn_cleanup(pTHX_ GV *gv, IO *io, PerlIO *fp, char *mode, const char *oname,
+ PerlIO *saveifp, PerlIO *saveofp, int savefd, char savetype,
+ int writing, bool was_fdopen, const char *type, Stat_t *statbufp)
+{
+ int fd;
+ Stat_t statbuf;
+
+ PERL_ARGS_ASSERT_OPENN_CLEANUP;
+
+ Zero(&statbuf, 1, Stat_t);
+
if (!fp) {
if (IoTYPE(io) == IoTYPE_RDONLY && ckWARN(WARN_NEWLINE)
- && strchr(oname, '\n')
+ && should_warn_nl(oname)
)
{
if ((IoTYPE(io) == IoTYPE_RDONLY) &&
(fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
Perl_warner(aTHX_ packWARN(WARN_IO),
- "Filehandle STD%s reopened as %"HEKf
+ "Filehandle STD%s reopened as %" HEKf
" only for input",
((fp == PerlIO_stdout()) ? "OUT" : "ERR"),
HEKfARG(GvENAME_HEK(gv)));
}
else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
Perl_warner(aTHX_ packWARN(WARN_IO),
- "Filehandle STDIN reopened as %"HEKf" only for output",
+ "Filehandle STDIN reopened as %" HEKf " only for output",
HEKfARG(GvENAME_HEK(gv))
);
}
}
fd = PerlIO_fileno(fp);
- /* If there is no fd (e.g. PerlIO::scalar) assume it isn't a
- * socket - this covers PerlIO::scalar - otherwise unless we "know" the
- * type probe for socket-ness.
+ /* Do NOT do: "if (fd < 0) goto say_false;" here. If there is no
+ * fd assume it isn't a socket - this covers PerlIO::scalar -
+ * otherwise unless we "know" the type probe for socket-ness.
*/
if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
- if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
+ if (PerlLIO_fstat(fd,&statbuf) < 0) {
/* If PerlIO claims to have fd we had better be able to fstat() it. */
(void) PerlIO_close(fp);
goto say_false;
}
#ifndef PERL_MICRO
- if (S_ISSOCK(PL_statbuf.st_mode))
+ if (S_ISSOCK(statbuf.st_mode))
IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
#ifdef HAS_SOCKET
else if (
- !(PL_statbuf.st_mode & S_IFMT)
+ !(statbuf.st_mode & S_IFMT)
&& IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
&& IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
) { /* on OS's that return 0 on fstat()ed pipe */
is assigned to (say) STDOUT - for now let dup2() fail
and provide the error
*/
- if (PerlLIO_dup2(fd, savefd) < 0) {
+ if (fd < 0) {
+ SETERRNO(EBADF,RMS_IFI);
+ goto say_false;
+ } else if (PerlLIO_dup2(fd, savefd) < 0) {
(void)PerlIO_close(fp);
goto say_false;
}
if (was_fdopen) {
/* need to close fp without closing underlying fd */
int ofd = PerlIO_fileno(fp);
- int dupfd = PerlLIO_dup(ofd);
+ int dupfd = ofd >= 0 ? PerlLIO_dup(ofd) : -1;
#if defined(HAS_FCNTL) && defined(F_SETFD)
- /* Assume if we have F_SETFD we have F_GETFD */
- int coe = fcntl(ofd,F_GETFD);
+ /* Assume if we have F_SETFD we have F_GETFD. */
+ /* Get a copy of all the fd flags. */
+ int fd_flags = ofd >= 0 ? fcntl(ofd, F_GETFD) : -1;
+ if (fd_flags < 0) {
+ if (dupfd >= 0)
+ PerlLIO_close(dupfd);
+ goto say_false;
+ }
#endif
+ if (ofd < 0 || dupfd < 0) {
+ if (dupfd >= 0)
+ PerlLIO_close(dupfd);
+ goto say_false;
+ }
PerlIO_close(fp);
- PerlLIO_dup2(dupfd,ofd);
+ PerlLIO_dup2(dupfd, ofd);
#if defined(HAS_FCNTL) && defined(F_SETFD)
- /* The dup trick has lost close-on-exec on ofd */
- fcntl(ofd,F_SETFD, coe);
+ /* The dup trick has lost close-on-exec on ofd,
+ * and possibly any other flags, so restore them. */
+ if (fcntl(ofd,F_SETFD, fd_flags) < 0) {
+ if (dupfd >= 0)
+ PerlLIO_close(dupfd);
+ goto say_false;
+ }
#endif
PerlLIO_close(dupfd);
}
PerlIO_clearerr(fp);
fd = PerlIO_fileno(fp);
}
-#if defined(HAS_FCNTL) && defined(F_SETFD)
- if (fd >= 0) {
- dSAVE_ERRNO;
- fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
- RESTORE_ERRNO;
+#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
+ if (fd >= 0 && fd > PL_maxsysfd && fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
+ PerlLIO_close(fd);
+ goto say_false;
}
#endif
IoIFP(io) = fp;
IoFLAGS(io) &= ~IOf_NOLINE;
if (writing) {
if (IoTYPE(io) == IoTYPE_SOCKET
- || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
+ || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(statbuf.st_mode)) ) {
char *s = mode;
if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC)
s++;
*s = 'w';
if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,NULL))) {
PerlIO_close(fp);
- IoIFP(io) = NULL;
goto say_false;
}
}
else
IoOFP(io) = fp;
}
+ if (statbufp)
+ *statbufp = statbuf;
+
return TRUE;
-say_false:
+ say_false:
IoIFP(io) = saveifp;
IoOFP(io) = saveofp;
IoTYPE(io) = savetype;
return FALSE;
}
+/* Open a temp file in the same directory as an original name.
+*/
+
+static bool
+S_openindirtemp(pTHX_ GV *gv, SV *orig_name, SV *temp_out_name) {
+ int fd;
+ PerlIO *fp;
+ const char *p = SvPV_nolen(orig_name);
+ const char *sep;
+
+ /* look for the last directory separator */
+ sep = strrchr(p, '/');
+
+#ifdef DOSISH
+ {
+ const char *sep2;
+ if ((sep2 = strrchr(sep ? sep : p, '\\')))
+ sep = sep2;
+ }
+#endif
+#ifdef VMS
+ if (!sep) {
+ const char *openp = strchr(p, '[');
+ if (openp)
+ sep = strchr(openp, ']');
+ else {
+ sep = strchr(p, ':');
+ }
+ }
+#endif
+ if (sep) {
+ sv_setpvn(temp_out_name, p, sep - p + 1);
+ sv_catpvs(temp_out_name, "XXXXXXXX");
+ }
+ else
+ sv_setpvs(temp_out_name, "XXXXXXXX");
+
+ {
+ int old_umask = umask(0177);
+ fd = Perl_my_mkstemp(SvPVX(temp_out_name));
+ umask(old_umask);
+ }
+
+ if (fd < 0)
+ return FALSE;
+
+ fp = PerlIO_fdopen(fd, "w+");
+ if (!fp)
+ return FALSE;
+
+ return do_openn(gv, "+>&", 3, 0, 0, 0, fp, NULL, 0);
+}
+
+#if defined(HAS_UNLINKAT) && defined(HAS_RENAMEAT) && defined(HAS_FCHMODAT) && \
+ (defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)) && !defined(NO_USE_ATFUNCTIONS) && \
+ defined(HAS_LINKAT)
+# define ARGV_USE_ATFUNCTIONS
+#endif
+
+/* Win32 doesn't necessarily return useful information
+ * in st_dev, st_ino.
+ */
+#ifndef DOSISH
+# define ARGV_USE_STAT_INO
+#endif
+
+#define ARGVMG_BACKUP_NAME 0
+#define ARGVMG_TEMP_NAME 1
+#define ARGVMG_ORIG_NAME 2
+#define ARGVMG_ORIG_MODE 3
+#define ARGVMG_ORIG_PID 4
+
+/* we store the entire stat_t since the ino_t and dev_t values might
+ not fit in an IV. I could have created a new structure and
+ transferred them across, but this seemed too much effort for very
+ little win.
+
+ We store it even when the *at() functions are available, since
+ while the C runtime might have definitions for these functions, the
+ operating system or a specific filesystem might not implement them.
+ eg. NetBSD 6 implements linkat() but only where the fds are AT_FDCWD.
+ */
+#ifdef ARGV_USE_STAT_INO
+# define ARGVMG_ORIG_CWD_STAT 5
+#endif
+
+#ifdef ARGV_USE_ATFUNCTIONS
+# define ARGVMG_ORIG_DIRP 6
+#endif
+
+#ifdef ENOTSUP
+#define NotSupported(e) ((e) == ENOSYS || (e) == ENOTSUP)
+#else
+#define NotSupported(e) ((e) == ENOSYS)
+#endif
+
+static int
+S_argvout_free(pTHX_ SV *io, MAGIC *mg) {
+ PERL_UNUSED_ARG(io);
+
+ /* note this can be entered once the file has been
+ successfully deleted too */
+ assert(IoTYPE(io) != IoTYPE_PIPE);
+
+ /* mg_obj can be NULL if a thread is created with the handle open, in which
+ case we leave any clean up to the parent thread */
+ if (mg->mg_obj && IoIFP(io)) {
+ SV **pid_psv;
+#ifdef ARGV_USE_ATFUNCTIONS
+ SV **dir_psv;
+ DIR *dir;
+#endif
+ PerlIO *iop = IoIFP(io);
+
+ assert(SvTYPE(mg->mg_obj) == SVt_PVAV);
+
+ pid_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_PID, FALSE);
+
+ assert(pid_psv && *pid_psv);
+
+ if (SvIV(*pid_psv) == (IV)PerlProc_getpid()) {
+ /* if we get here the file hasn't been closed explicitly by the
+ user and hadn't been closed implicitly by nextargv(), so
+ abandon the edit */
+ SV **temp_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_TEMP_NAME, FALSE);
+ const char *temp_pv = SvPVX(*temp_psv);
+
+ assert(temp_psv && *temp_psv && SvPOK(*temp_psv));
+ (void)PerlIO_close(iop);
+ IoIFP(io) = IoOFP(io) = NULL;
+#ifdef ARGV_USE_ATFUNCTIONS
+ dir_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_DIRP, FALSE);
+ assert(dir_psv && *dir_psv && SvIOK(*dir_psv));
+ dir = INT2PTR(DIR *, SvIV(*dir_psv));
+ if (dir) {
+ if (unlinkat(my_dirfd(dir), temp_pv, 0) < 0 &&
+ NotSupported(errno))
+ (void)UNLINK(temp_pv);
+ closedir(dir);
+ }
+#else
+ (void)UNLINK(temp_pv);
+#endif
+ }
+ }
+
+ return 0;
+}
+
+static int
+S_argvout_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) {
+ PERL_UNUSED_ARG(param);
+
+ /* ideally we could just remove the magic from the SV but we don't get the SV here */
+ SvREFCNT_dec(mg->mg_obj);
+ mg->mg_obj = NULL;
+
+ return 0;
+}
+
+/* Magic of this type has an AV containing the following:
+ 0: name of the backup file (if any)
+ 1: name of the temp output file
+ 2: name of the original file
+ 3: file mode of the original file
+ 4: pid of the process we opened at, to prevent doing the renaming
+ etc in both the child and the parent after a fork
+
+If we have useful inode/device ids in stat_t we also keep:
+ 5: a stat of the original current working directory
+
+If we have unlinkat(), renameat(), fchmodat(), dirfd() we also keep:
+ 6: the DIR * for the current directory when we open the file, stored as an IV
+ */
+
+static const MGVTBL argvout_vtbl =
+ {
+ NULL, /* svt_get */
+ NULL, /* svt_set */
+ NULL, /* svt_len */
+ NULL, /* svt_clear */
+ S_argvout_free, /* svt_free */
+ NULL, /* svt_copy */
+ S_argvout_dup, /* svt_dup */
+ NULL /* svt_local */
+ };
+
PerlIO *
-Perl_nextargv(pTHX_ GV *gv)
+Perl_nextargv(pTHX_ GV *gv, bool nomagicopen)
{
- dVAR;
- SV *sv;
-#ifndef FLEXFILENAMES
- int filedev;
- int fileino;
-#endif
- Uid_t fileuid;
- Gid_t filegid;
IO * const io = GvIOp(gv);
+ SV *const old_out_name = PL_inplace ? newSVsv(GvSV(gv)) : NULL;
PERL_ARGS_ASSERT_NEXTARGV;
+ if (old_out_name)
+ SAVEFREESV(old_out_name);
+
if (!PL_argvoutgv)
PL_argvoutgv = gv_fetchpvs("ARGVOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
- if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
+ if (io && (IoFLAGS(io) & (IOf_ARGV|IOf_START)) == (IOf_ARGV|IOf_START)) {
IoFLAGS(io) &= ~IOf_START;
if (PL_inplace) {
assert(PL_defoutgv);
SvREFCNT_inc_simple_NN(PL_defoutgv));
}
}
- if (PL_filemode & (S_ISUID|S_ISGID)) {
- PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
-#ifdef HAS_FCHMOD
- if (PL_lastfd != -1)
- (void)fchmod(PL_lastfd,PL_filemode);
-#else
- (void)PerlLIO_chmod(PL_oldname,PL_filemode);
-#endif
+
+ {
+ IO * const io = GvIOp(PL_argvoutgv);
+ if (io && IoIFP(io) && old_out_name) {
+ do_close(PL_argvoutgv, FALSE);
+ }
}
+
PL_lastfd = -1;
PL_filemode = 0;
if (!GvAV(gv))
return NULL;
while (av_tindex(GvAV(gv)) >= 0) {
STRLEN oldlen;
- sv = av_shift(GvAV(gv));
+ SV *const sv = av_shift(GvAV(gv));
SAVEFREESV(sv);
SvTAINTED_off(GvSVn(gv)); /* previous tainting irrelevant */
sv_setsv(GvSVn(gv),sv);
SvSETMAGIC(GvSV(gv));
PL_oldname = SvPVx(GvSV(gv), oldlen);
- if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,NULL)) {
- if (PL_inplace) {
+ if (LIKELY(!PL_inplace)) {
+ if (nomagicopen
+ ? do_open6(gv, "<", 1, NULL, &GvSV(gv), 1)
+ : do_open6(gv, PL_oldname, oldlen, NULL, NULL, 0)
+ ) {
+ return IoIFP(GvIOp(gv));
+ }
+ }
+ else {
+ Stat_t statbuf;
+ /* This very long block ends with return IoIFP(GvIOp(gv));
+ Both this block and the block above fall through on open
+ failure to the warning code, and then the while loop above tries
+ the next entry. */
+ if (do_open_raw(gv, PL_oldname, oldlen, O_RDONLY, 0, &statbuf)) {
+#ifndef FLEXFILENAMES
+ int filedev;
+ int fileino;
+#endif
+#ifdef ARGV_USE_ATFUNCTIONS
+ DIR *curdir;
+#endif
+ Uid_t fileuid;
+ Gid_t filegid;
+ AV *magic_av = NULL;
+ SV *temp_name_sv = NULL;
+ MAGIC *mg;
+
TAINT_PROPER("inplace open");
if (oldlen == 1 && *PL_oldname == '-') {
setdefout(gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL,
return IoIFP(GvIOp(gv));
}
#ifndef FLEXFILENAMES
- filedev = PL_statbuf.st_dev;
- fileino = PL_statbuf.st_ino;
+ filedev = statbuf.st_dev;
+ fileino = statbuf.st_ino;
#endif
- PL_filemode = PL_statbuf.st_mode;
- fileuid = PL_statbuf.st_uid;
- filegid = PL_statbuf.st_gid;
+ PL_filemode = statbuf.st_mode;
+ fileuid = statbuf.st_uid;
+ filegid = statbuf.st_gid;
if (!S_ISREG(PL_filemode)) {
Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
"Can't do inplace edit: %s is not a regular file",
do_close(gv,FALSE);
continue;
}
+ magic_av = newAV();
if (*PL_inplace && strNE(PL_inplace, "*")) {
const char *star = strchr(PL_inplace, '*');
if (star) {
const char *begin = PL_inplace;
- sv_setpvs(sv, "");
+ SvPVCLEAR(sv);
do {
sv_catpvn(sv, begin, star - begin);
sv_catpvn(sv, PL_oldname, oldlen);
sv_catpv(sv,PL_inplace);
}
#ifndef FLEXFILENAMES
- if ((PerlLIO_stat(SvPVX_const(sv),&PL_statbuf) >= 0
- && PL_statbuf.st_dev == filedev
- && PL_statbuf.st_ino == fileino)
+ if ((PerlLIO_stat(SvPVX_const(sv),&statbuf) >= 0
+ && statbuf.st_dev == filedev
+ && statbuf.st_ino == fileino)
#ifdef DJGPP
|| ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
#endif
)
{
Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
- "Can't do inplace edit: %"SVf" would not be unique",
+ "Can't do inplace edit: %"
+ SVf " would not be unique",
SVfARG(sv));
- do_close(gv,FALSE);
- continue;
+ goto cleanup_argv;
}
#endif
-#ifdef HAS_RENAME
-#if !defined(DOSISH) && !defined(__CYGWIN__)
- if (PerlLIO_rename(PL_oldname,SvPVX_const(sv)) < 0) {
- Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
- "Can't rename %s to %"SVf": %s, skipping file",
- PL_oldname, SVfARG(sv), Strerror(errno));
- do_close(gv,FALSE);
- continue;
- }
-#else
- do_close(gv,FALSE);
- (void)PerlLIO_unlink(SvPVX_const(sv));
- (void)PerlLIO_rename(PL_oldname,SvPVX_const(sv));
- do_open(gv,(char*)SvPVX_const(sv),SvCUR(sv),TRUE,O_RDONLY,0,NULL);
-#endif /* DOSISH */
-#else
- (void)UNLINK(SvPVX_const(sv));
- if (link(PL_oldname,SvPVX_const(sv)) < 0) {
- Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
- "Can't rename %s to %"SVf": %s, skipping file",
- PL_oldname, SVfARG(sv), Strerror(errno) );
- do_close(gv,FALSE);
- continue;
- }
- (void)UNLINK(PL_oldname);
-#endif
- }
- else {
-#if !defined(DOSISH) && !defined(AMIGAOS)
-# ifndef VMS /* Don't delete; use automatic file versioning */
- if (UNLINK(PL_oldname) < 0) {
- Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
- "Can't remove %s: %s, skipping file",
- PL_oldname, Strerror(errno) );
- do_close(gv,FALSE);
- continue;
- }
-# endif
-#else
- Perl_croak(aTHX_ "Can't do inplace edit without backup");
-#endif
+ av_store(magic_av, ARGVMG_BACKUP_NAME, newSVsv(sv));
}
sv_setpvn(sv,PL_oldname,oldlen);
SETERRNO(0,0); /* in case sprintf set errno */
- if (!Perl_do_openn(aTHX_ PL_argvoutgv, (char*)SvPVX_const(sv),
- SvCUR(sv), TRUE,
-#ifdef VMS
- O_WRONLY|O_CREAT|O_TRUNC,0,
-#else
- O_WRONLY|O_CREAT|OPEN_EXCL,0600,
-#endif
- NULL, NULL, 0)) {
- Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
+ temp_name_sv = newSV(0);
+ if (!S_openindirtemp(aTHX_ PL_argvoutgv, GvSV(gv), temp_name_sv)) {
+ SvREFCNT_dec(temp_name_sv);
+ /* diag_listed_as: Can't do inplace edit on %s: %s */
+ Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: Cannot make temp name: %s",
PL_oldname, Strerror(errno) );
- do_close(gv,FALSE);
- continue;
+#ifndef FLEXFILENAMES
+ cleanup_argv:
+#endif
+ do_close(gv,FALSE);
+ SvREFCNT_dec(magic_av);
+ continue;
}
+ av_store(magic_av, ARGVMG_TEMP_NAME, temp_name_sv);
+ av_store(magic_av, ARGVMG_ORIG_NAME, newSVsv(sv));
+ av_store(magic_av, ARGVMG_ORIG_MODE, newSVuv(PL_filemode));
+ av_store(magic_av, ARGVMG_ORIG_PID, newSViv((IV)PerlProc_getpid()));
+#if defined(ARGV_USE_ATFUNCTIONS)
+ curdir = opendir(".");
+ av_store(magic_av, ARGVMG_ORIG_DIRP, newSViv(PTR2IV(curdir)));
+#elif defined(ARGV_USE_STAT_INO)
+ if (PerlLIO_stat(".", &statbuf) >= 0) {
+ av_store(magic_av, ARGVMG_ORIG_CWD_STAT,
+ newSVpvn((char *)&statbuf, sizeof(statbuf)));
+ }
+#endif
setdefout(PL_argvoutgv);
+ sv_setsv(GvSVn(PL_argvoutgv), temp_name_sv);
+ mg = sv_magicext((SV*)GvIOp(PL_argvoutgv), (SV*)magic_av, PERL_MAGIC_uvar, &argvout_vtbl, NULL, 0);
+ mg->mg_flags |= MGf_DUP;
+ SvREFCNT_dec(magic_av);
PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
- (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
+ if (PL_lastfd >= 0) {
+ (void)PerlLIO_fstat(PL_lastfd,&statbuf);
#ifdef HAS_FCHMOD
- (void)fchmod(PL_lastfd,PL_filemode);
+ (void)fchmod(PL_lastfd,PL_filemode);
#else
- (void)PerlLIO_chmod(PL_oldname,PL_filemode);
+ (void)PerlLIO_chmod(PL_oldname,PL_filemode);
#endif
- if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
- int rc = 0;
+ if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) {
+ /* XXX silently ignore failures */
#ifdef HAS_FCHOWN
- rc = fchown(PL_lastfd,fileuid,filegid);
-#else
-#ifdef HAS_CHOWN
- rc = PerlLIO_chown(PL_oldname,fileuid,filegid);
+ PERL_UNUSED_RESULT(fchown(PL_lastfd,fileuid,filegid));
+#elif defined(HAS_CHOWN)
+ PERL_UNUSED_RESULT(PerlLIO_chown(PL_oldname,fileuid,filegid));
#endif
-#endif
- /* XXX silently ignore failures */
- PERL_UNUSED_VAR(rc);
- }
- }
- return IoIFP(GvIOp(gv));
- }
- else {
- if (ckWARN_d(WARN_INPLACE)) {
- const int eno = errno;
- if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
- && !S_ISREG(PL_statbuf.st_mode))
- {
- Perl_warner(aTHX_ packWARN(WARN_INPLACE),
- "Can't do inplace edit: %s is not a regular file",
- PL_oldname);
+ }
}
- else
- Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
- PL_oldname, Strerror(eno));
+ return IoIFP(GvIOp(gv));
}
+ } /* successful do_open_raw(), PL_inplace non-NULL */
+
+ if (ckWARN_d(WARN_INPLACE)) {
+ const int eno = errno;
+ Stat_t statbuf;
+ if (PerlLIO_stat(PL_oldname, &statbuf) >= 0
+ && !S_ISREG(statbuf.st_mode)) {
+ Perl_warner(aTHX_ packWARN(WARN_INPLACE),
+ "Can't do inplace edit: %s is not a regular file",
+ PL_oldname);
+ }
+ else {
+ Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
+ PL_oldname, Strerror(eno));
+ }
}
}
if (io && (IoFLAGS(io) & IOf_ARGV))
IoFLAGS(io) |= IOf_START;
if (PL_inplace) {
- (void)do_close(PL_argvoutgv,FALSE);
if (io && (IoFLAGS(io) & IOf_ARGV)
&& PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
{
return NULL;
}
+#ifdef ARGV_USE_ATFUNCTIONS
+# if defined(__FreeBSD__)
+
+/* FreeBSD 11 renameat() mis-behaves strangely with absolute paths in cases where the
+ * equivalent rename() succeeds
+ */
+static int
+S_my_renameat(int olddfd, const char *oldpath, int newdfd, const char *newpath) {
+ /* this is intended only for use in Perl_do_close() */
+ assert(olddfd == newdfd);
+ assert(PERL_FILE_IS_ABSOLUTE(oldpath) == PERL_FILE_IS_ABSOLUTE(newpath));
+ if (PERL_FILE_IS_ABSOLUTE(oldpath)) {
+ return PerlLIO_rename(oldpath, newpath);
+ }
+ else {
+ return renameat(olddfd, oldpath, newdfd, newpath);
+ }
+}
+
+# else
+# define S_my_renameat(dh1, pv1, dh2, pv2) renameat((dh1), (pv1), (dh2), (pv2))
+# endif /* if defined(__FreeBSD__) */
+#endif
+
+static bool
+S_dir_unchanged(pTHX_ const char *orig_pv, MAGIC *mg) {
+ Stat_t statbuf;
+
+#ifdef ARGV_USE_STAT_INO
+ SV **stat_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_CWD_STAT, FALSE);
+ Stat_t *orig_cwd_stat = stat_psv && *stat_psv ? (Stat_t *)SvPVX(*stat_psv) : NULL;
+
+ /* if the path is absolute the possible moving of cwd (which the file
+ might be in) isn't our problem.
+ This code tries to be reasonably balanced about detecting a changed
+ CWD, if we have the information needed to check that curdir has changed, we
+ check it
+ */
+ if (!PERL_FILE_IS_ABSOLUTE(orig_pv)
+ && orig_cwd_stat
+ && PerlLIO_stat(".", &statbuf) >= 0
+ && ( statbuf.st_dev != orig_cwd_stat->st_dev
+ || statbuf.st_ino != orig_cwd_stat->st_ino)) {
+ Perl_croak(aTHX_ "Cannot complete in-place edit of %s: %s",
+ orig_pv, "Current directory has changed");
+ }
+#else
+ SV **temp_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_TEMP_NAME, FALSE);
+
+ /* Some platforms don't have useful st_ino etc, so just
+ check we can see the work file.
+ */
+ if (!PERL_FILE_IS_ABSOLUTE(orig_pv)
+ && PerlLIO_stat(SvPVX(*temp_psv), &statbuf) < 0) {
+ Perl_croak(aTHX_ "Cannot complete in-place edit of %" SVf ": %s",
+ orig_pv,
+ "Work file is missing - did you change directory?");
+ }
+#endif
+
+ return TRUE;
+}
+
+#define dir_unchanged(orig_psv, mg) \
+ S_dir_unchanged(aTHX_ (orig_psv), (mg))
+
/* explicit renamed to avoid C++ conflict -- kja */
bool
Perl_do_close(pTHX_ GV *gv, bool not_implicit)
{
- dVAR;
bool retval;
IO *io;
+ MAGIC *mg;
if (!gv)
gv = PL_argvgv;
}
return FALSE;
}
- retval = io_close(io, not_implicit);
+ if ((mg = mg_findext((SV*)io, PERL_MAGIC_uvar, &argvout_vtbl))
+ && mg->mg_obj) {
+ /* handle to an in-place edit work file */
+ SV **back_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_BACKUP_NAME, FALSE);
+ SV **temp_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_TEMP_NAME, FALSE);
+ /* PL_oldname may have been modified by a nested ARGV use at this point */
+ SV **orig_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_NAME, FALSE);
+ SV **mode_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_MODE, FALSE);
+ SV **pid_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_PID, FALSE);
+#if defined(ARGV_USE_ATFUNCTIONS)
+ SV **dir_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_DIRP, FALSE);
+ DIR *dir;
+ int dfd;
+#endif
+ UV mode;
+ int fd;
+
+ const char *orig_pv;
+
+ assert(temp_psv && *temp_psv);
+ assert(orig_psv && *orig_psv);
+ assert(mode_psv && *mode_psv);
+ assert(pid_psv && *pid_psv);
+#ifdef ARGV_USE_ATFUNCTIONS
+ assert(dir_psv && *dir_psv);
+ dir = INT2PTR(DIR *, SvIVX(*dir_psv));
+ dfd = my_dirfd(dir);
+#endif
+
+ orig_pv = SvPVX(*orig_psv);
+ mode = SvUV(*mode_psv);
+
+ if ((mode & (S_ISUID|S_ISGID)) != 0
+ && (fd = PerlIO_fileno(IoIFP(io))) >= 0) {
+ (void)PerlIO_flush(IoIFP(io));
+#ifdef HAS_FCHMOD
+ (void)fchmod(fd, mode);
+#else
+ (void)PerlLIO_chmod(orig_pv, mode);
+#endif
+ }
+
+ retval = io_close(io, NULL, not_implicit, FALSE);
+
+ if (SvIV(*pid_psv) != (IV)PerlProc_getpid()) {
+ /* this is a child process, don't duplicate our rename() etc
+ processing below */
+ goto freext;
+ }
+
+ if (retval) {
+#if defined(DOSISH) || defined(__CYGWIN__)
+ if (PL_argvgv && GvIOp(PL_argvgv)
+ && IoIFP(GvIOp(PL_argvgv))
+ && (IoFLAGS(GvIOp(PL_argvgv)) & (IOf_ARGV|IOf_START)) == IOf_ARGV) {
+ do_close(PL_argvgv, FALSE);
+ }
+#endif
+#ifndef ARGV_USE_ATFUNCTIONS
+ if (!dir_unchanged(orig_pv, mg))
+ goto abort_inplace;
+#endif
+ if (back_psv && *back_psv) {
+#if defined(HAS_LINK) && !defined(DOSISH) && !defined(__CYGWIN__) && defined(HAS_RENAME)
+ if (
+# ifdef ARGV_USE_ATFUNCTIONS
+ linkat(dfd, orig_pv, dfd, SvPVX(*back_psv), 0) < 0 &&
+ !(UNLIKELY(NotSupported(errno)) &&
+ dir_unchanged(orig_pv, mg) &&
+ link(orig_pv, SvPVX(*back_psv)) == 0)
+# else
+ link(orig_pv, SvPVX(*back_psv)) < 0
+# endif
+ )
+#endif
+ {
+#ifdef HAS_RENAME
+ if (
+# ifdef ARGV_USE_ATFUNCTIONS
+ S_my_renameat(dfd, orig_pv, dfd, SvPVX(*back_psv)) < 0 &&
+ !(UNLIKELY(NotSupported(errno)) &&
+ dir_unchanged(orig_pv, mg) &&
+ PerlLIO_rename(orig_pv, SvPVX(*back_psv)) == 0)
+# else
+ PerlLIO_rename(orig_pv, SvPVX(*back_psv)) < 0
+# endif
+ ) {
+ if (!not_implicit) {
+# ifdef ARGV_USE_ATFUNCTIONS
+ if (unlinkat(dfd, SvPVX_const(*temp_psv), 0) < 0 &&
+ UNLIKELY(NotSupported(errno)) &&
+ dir_unchanged(orig_pv, mg))
+ (void)UNLINK(SvPVX_const(*temp_psv));
+# else
+ UNLINK(SvPVX(*temp_psv));
+# endif
+ Perl_croak(aTHX_ "Can't rename %s to %s: %s, skipping file",
+ SvPVX(*orig_psv), SvPVX(*back_psv), Strerror(errno));
+ }
+ /* should we warn here? */
+ goto abort_inplace;
+ }
+#else
+ (void)UNLINK(SvPVX(*back_psv));
+ if (link(orig_pv, SvPVX(*back_psv))) {
+ if (!not_implicit) {
+ Perl_croak(aTHX_ "Can't rename %s to %s: %s, skipping file",
+ SvPVX(*orig_psv), SvPVX(*back_psv), Strerror(errno));
+ }
+ goto abort_inplace;
+ }
+ /* we need to use link() to get the temp into place too, and linK()
+ fails if the new link name exists */
+ (void)UNLINK(orig_pv);
+#endif
+ }
+ }
+#if defined(DOSISH) || defined(__CYGWIN__) || !defined(HAS_RENAME)
+ else {
+ UNLINK(orig_pv);
+ }
+#endif
+ if (
+#if !defined(HAS_RENAME)
+ link(SvPVX(*temp_psv), orig_pv) < 0
+#elif defined(ARGV_USE_ATFUNCTIONS)
+ S_my_renameat(dfd, SvPVX(*temp_psv), dfd, orig_pv) < 0 &&
+ !(UNLIKELY(NotSupported(errno)) &&
+ dir_unchanged(orig_pv, mg) &&
+ PerlLIO_rename(SvPVX(*temp_psv), orig_pv) == 0)
+#else
+ PerlLIO_rename(SvPVX(*temp_psv), orig_pv) < 0
+#endif
+ ) {
+ if (!not_implicit) {
+#ifdef ARGV_USE_ATFUNCTIONS
+ if (unlinkat(dfd, SvPVX_const(*temp_psv), 0) < 0 &&
+ NotSupported(errno))
+ UNLINK(SvPVX(*temp_psv));
+#else
+ UNLINK(SvPVX(*temp_psv));
+#endif
+ Perl_croak(aTHX_ "Can't rename in-place work file '%s' to '%s': %s\n",
+ SvPVX(*temp_psv), SvPVX(*orig_psv), Strerror(errno));
+ }
+ abort_inplace:
+ UNLINK(SvPVX_const(*temp_psv));
+ retval = FALSE;
+ }
+#ifndef HAS_RENAME
+ UNLINK(SvPVX(*temp_psv));
+#endif
+ }
+ else {
+#ifdef ARGV_USE_ATFUNCTIONS
+ if (unlinkat(dfd, SvPVX_const(*temp_psv), 0) &&
+ NotSupported(errno))
+ UNLINK(SvPVX_const(*temp_psv));
+
+#else
+ UNLINK(SvPVX_const(*temp_psv));
+#endif
+ if (!not_implicit) {
+ Perl_croak(aTHX_ "Failed to close in-place work file %s: %s",
+ SvPVX(*temp_psv), Strerror(errno));
+ }
+ }
+ freext:
+ mg_freeext((SV*)io, PERL_MAGIC_uvar, &argvout_vtbl);
+ }
+ else {
+ retval = io_close(io, NULL, not_implicit, FALSE);
+ }
if (not_implicit) {
IoLINES(io) = 0;
IoPAGE(io) = 0;
}
bool
-Perl_io_close(pTHX_ IO *io, bool not_implicit)
+Perl_io_close(pTHX_ IO *io, GV *gv, bool not_implicit, bool warn_on_fail)
{
- dVAR;
bool retval = FALSE;
PERL_ARGS_ASSERT_IO_CLOSE;
else {
if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
const bool prev_err = PerlIO_error(IoOFP(io));
+#ifdef USE_PERLIO
+ if (prev_err)
+ PerlIO_restore_errno(IoOFP(io));
+#endif
retval = (PerlIO_close(IoOFP(io)) != EOF && !prev_err);
PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
}
else {
const bool prev_err = PerlIO_error(IoIFP(io));
+#ifdef USE_PERLIO
+ if (prev_err)
+ PerlIO_restore_errno(IoIFP(io));
+#endif
retval = (PerlIO_close(IoIFP(io)) != EOF && !prev_err);
}
}
IoOFP(io) = IoIFP(io) = NULL;
+
+ if (warn_on_fail && !retval) {
+ if (gv)
+ Perl_ck_warner_d(aTHX_ packWARN(WARN_IO),
+ "Warning: unable to close filehandle %"
+ HEKf " properly: %" SVf,
+ HEKfARG(GvNAME_HEK(gv)),
+ SVfARG(get_sv("!",GV_ADD)));
+ else
+ Perl_ck_warner_d(aTHX_ packWARN(WARN_IO),
+ "Warning: unable to close filehandle "
+ "properly: %" SVf,
+ SVfARG(get_sv("!",GV_ADD)));
+ }
}
else if (not_implicit) {
SETERRNO(EBADF,SS_IVCHAN);
bool
Perl_do_eof(pTHX_ GV *gv)
{
- dVAR;
IO * const io = GvIO(gv);
PERL_ARGS_ASSERT_DO_EOF;
PerlIO_set_cnt(IoIFP(io),-1);
}
if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
- if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
+ if (gv != PL_argvgv || !nextargv(gv, FALSE)) /* get another fp handy */
return TRUE;
}
else
Off_t
Perl_do_tell(pTHX_ GV *gv)
{
- dVAR;
IO *const io = GvIO(gv);
PerlIO *fp;
bool
Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
{
- dVAR;
IO *const io = GvIO(gv);
PerlIO *fp;
Off_t
Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
{
- dVAR;
IO *const io = GvIO(gv);
PerlIO *fp;
PERL_ARGS_ASSERT_DO_SYSSEEK;
- if (io && (fp = IoIFP(io)))
- return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
+ if (io && (fp = IoIFP(io))) {
+ int fd = PerlIO_fileno(fp);
+ if (fd < 0 || (whence == SEEK_SET && pos < 0)) {
+ SETERRNO(EINVAL,LIB_INVARG);
+ return -1;
+ } else {
+ return PerlLIO_lseek(fd, pos, whence);
+ }
+ }
report_evil_fh(gv);
SETERRNO(EBADF,RMS_IFI);
return (Off_t)-1;
Perl_mode_from_discipline(pTHX_ const char *s, STRLEN len)
{
int mode = O_BINARY;
+ PERL_UNUSED_CONTEXT;
if (s) {
while (*s) {
if (*s == ':') {
len -= 4;
break;
}
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case 'c':
if (s[2] == 'r' && s[3] == 'l' && s[4] == 'f'
&& (!s[5] || s[5] == ':' || isSPACE(s[5])))
len -= 5;
break;
}
- /* FALL THROUGH */
+ /* FALLTHROUGH */
default:
goto fail_discipline;
}
}
else {
const char *end;
-fail_discipline:
- end = strchr(s+1, ':');
+ fail_discipline:
+ end = (char *) memchr(s+1, ':', len);
if (!end)
end = s+len;
#ifndef PERLIO_LAYERS
bool
Perl_do_print(pTHX_ SV *sv, PerlIO *fp)
{
- dVAR;
-
PERL_ARGS_ASSERT_DO_PRINT;
/* assuming fp is checked earlier */
if (SvTYPE(sv) == SVt_IV && SvIOK(sv)) {
assert(!SvGMAGICAL(sv));
if (SvIsUV(sv))
- PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
+ PerlIO_printf(fp, "%" UVuf, (UV)SvUVX(sv));
else
- PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
+ PerlIO_printf(fp, "%" IVdf, (IV)SvIVX(sv));
return !PerlIO_error(fp);
}
else {
I32
Perl_my_stat_flags(pTHX_ const U32 flags)
{
- dVAR;
dSP;
IO *io;
GV* gv;
if (PL_op->op_flags & OPf_REF) {
gv = cGVOP_gv;
do_fstat:
- if (gv == PL_defgv)
+ if (gv == PL_defgv) {
+ if (PL_laststatval < 0)
+ SETERRNO(EBADF,RMS_IFI);
return PL_laststatval;
+ }
io = GvIO(gv);
do_fstat_have_io:
PL_laststype = OP_STAT;
PL_statgv = gv ? gv : (GV *)io;
- sv_setpvs(PL_statname, "");
- if(io) {
+ SvPVCLEAR(PL_statname);
+ if (io) {
if (IoIFP(io)) {
- return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
+ int fd = PerlIO_fileno(IoIFP(io));
+ if (fd < 0) {
+ /* E.g. PerlIO::scalar has no real fd. */
+ SETERRNO(EBADF,RMS_IFI);
+ return (PL_laststatval = -1);
+ } else {
+ return (PL_laststatval = PerlLIO_fstat(fd, &PL_statcache));
+ }
} else if (IoDIRP(io)) {
return (PL_laststatval = PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache));
}
}
PL_laststatval = -1;
report_evil_fh(gv);
+ SETERRNO(EBADF,RMS_IFI);
return -1;
}
else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
return PL_laststatval;
else {
SV* const sv = TOPs;
- const char *s;
+ const char *s, *d;
STRLEN len;
if ((gv = MAYBE_DEREF_GV_flags(sv,flags))) {
goto do_fstat;
s = SvPV_flags_const(sv, len, flags);
PL_statgv = NULL;
sv_setpvn(PL_statname, s, len);
- s = SvPVX_const(PL_statname); /* s now NUL-terminated */
+ d = SvPVX_const(PL_statname); /* s now NUL-terminated */
PL_laststype = OP_STAT;
- PL_laststatval = PerlLIO_stat(s, &PL_statcache);
- if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n')) {
+ if (!IS_SAFE_PATHNAME(s, len, OP_NAME(PL_op))) {
+ PL_laststatval = -1;
+ }
+ else {
+ PL_laststatval = PerlLIO_stat(d, &PL_statcache);
+ }
+ if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && should_warn_nl(s)) {
GCC_DIAG_IGNORE(-Wformat-nonliteral); /* PL_warn_nl is constant */
Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
GCC_DIAG_RESTORE;
I32
Perl_my_lstat_flags(pTHX_ const U32 flags)
{
- dVAR;
static const char* const no_prev_lstat = "The stat preceding -l _ wasn't an lstat";
dSP;
const char *file;
+ STRLEN len;
SV* const sv = TOPs;
bool isio = FALSE;
if (PL_op->op_flags & OPf_REF) {
if (cGVOP_gv == PL_defgv) {
if (PL_laststype != OP_LSTAT)
Perl_croak(aTHX_ "%s", no_prev_lstat);
+ if (PL_laststatval < 0)
+ SETERRNO(EBADF,RMS_IFI);
return PL_laststatval;
}
PL_laststatval = -1;
if (ckWARN(WARN_IO)) {
/* diag_listed_as: Use of -l on filehandle%s */
Perl_warner(aTHX_ packWARN(WARN_IO),
- "Use of -l on filehandle %"HEKf,
+ "Use of -l on filehandle %" HEKf,
HEKfARG(GvENAME_HEK(cGVOP_gv)));
}
+ SETERRNO(EBADF,RMS_IFI);
return -1;
}
if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t))
else
/* diag_listed_as: Use of -l on filehandle%s */
Perl_warner(aTHX_ packWARN(WARN_IO),
- "Use of -l on filehandle %"HEKf,
- GvENAME_HEK((const GV *)
- (SvROK(sv) ? SvRV(sv) : sv)));
+ "Use of -l on filehandle %" HEKf,
+ HEKfARG(GvENAME_HEK((const GV *)
+ (SvROK(sv) ? SvRV(sv) : sv))));
}
- file = SvPV_flags_const_nolen(sv, flags);
+ file = SvPV_flags_const(sv, len, flags);
sv_setpv(PL_statname,file);
- PL_laststatval = PerlLIO_lstat(file,&PL_statcache);
- if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(file, '\n')) {
+ if (!IS_SAFE_PATHNAME(file, len, OP_NAME(PL_op))) {
+ PL_laststatval = -1;
+ }
+ else {
+ PL_laststatval = PerlLIO_lstat(file,&PL_statcache);
+ }
+ if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && should_warn_nl(file)) {
GCC_DIAG_IGNORE(-Wformat-nonliteral); /* PL_warn_nl is constant */
Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
GCC_DIAG_RESTORE;
{
const int e = errno;
PERL_ARGS_ASSERT_EXEC_FAILED;
+
if (ckWARN(WARN_EXEC))
- Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
- cmd, Strerror(e));
+ Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
+ cmd, Strerror(e));
if (do_report) {
- int rc = PerlLIO_write(fd, (void*)&e, sizeof(int));
- /* silently ignore failures */
- PERL_UNUSED_VAR(rc);
+ /* XXX silently ignore failures */
+ PERL_UNUSED_RESULT(PerlLIO_write(fd, (void*)&e, sizeof(int)));
PerlLIO_close(fd);
}
}
#if defined(__SYMBIAN32__) || defined(__LIBCATAMOUNT__)
Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
#else
- if (sp > mark) {
+ assert(sp >= mark);
+ {
const char **a;
const char *tmps = NULL;
Newx(PL_Argv, sp - mark + 1, const char*);
*a = NULL;
if (really)
tmps = SvPV_nolen_const(really);
- if ((!really && *PL_Argv[0] != '/') ||
+ if ((!really && PL_Argv[0] && *PL_Argv[0] != '/') ||
(really && *tmps != '/')) /* will execvp use PATH? */
TAINT_ENV(); /* testing IFS here is overkill, probably */
PERL_FPU_PRE_EXEC
- if (really && *tmps)
- PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
- else
- PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
+ if (really && *tmps) {
+ PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
+ } else if (PL_Argv[0]) {
+ PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
+ } else {
+ SETERRNO(ENOENT,RMS_FNF);
+ }
PERL_FPU_POST_EXEC
- S_exec_failed(aTHX_ (really ? tmps : PL_Argv[0]), fd, do_report);
+ S_exec_failed(aTHX_ (really ? tmps : PL_Argv[0] ? PL_Argv[0] : ""), fd, do_report);
}
do_execfree();
#endif
void
Perl_do_execfree(pTHX)
{
- dVAR;
Safefree(PL_Argv);
PL_Argv = NULL;
Safefree(PL_Cmd);
{
char flags[PERL_FLAGS_MAX];
if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
- strnEQ(cmd+PL_cshlen," -c",3)) {
+ strBEGINs(cmd+PL_cshlen," -c")) {
my_strlcpy(flags, "-c", PERL_FLAGS_MAX);
s = cmd+PL_cshlen+3;
if (*s == 'f') {
if (*cmd == '.' && isSPACE(cmd[1]))
goto doshell;
- if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
+ if (strBEGINs(cmd,"exec") && isSPACE(cmd[4]))
goto doshell;
s = cmd;
}
doshell:
PERL_FPU_PRE_EXEC
- PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char *)NULL);
+ PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char *)NULL);
PERL_FPU_POST_EXEC
S_exec_failed(aTHX_ PL_sh_path, fd, do_report);
Safefree(buf);
*a = NULL;
if (PL_Argv[0]) {
PERL_FPU_PRE_EXEC
- PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
+ PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
PERL_FPU_POST_EXEC
if (errno == ENOEXEC) { /* for system V NIH syndrome */
do_execfree();
#endif /* OS2 || WIN32 */
-#ifdef VMS
-#include <starlet.h> /* for sys$delprc */
-#endif
-
I32
Perl_apply(pTHX_ I32 type, SV **mark, SV **sp)
{
- dVAR;
I32 val;
I32 tot = 0;
const char *const what = PL_op_name[type];
if ((gv = MAYBE_DEREF_GV(*mark))) {
if (GvIO(gv) && IoIFP(GvIOp(gv))) {
#ifdef HAS_FCHMOD
+ int fd = PerlIO_fileno(IoIFP(GvIOn(gv)));
APPLY_TAINT_PROPER();
- if (fchmod(PerlIO_fileno(IoIFP(GvIOn(gv))), val))
- tot--;
+ if (fd < 0) {
+ SETERRNO(EBADF,RMS_IFI);
+ tot--;
+ } else if (fchmod(fd, val))
+ tot--;
#else
Perl_die(aTHX_ PL_no_func, "fchmod");
#endif
}
else {
+ SETERRNO(EBADF,RMS_IFI);
tot--;
}
}
if ((gv = MAYBE_DEREF_GV(*mark))) {
if (GvIO(gv) && IoIFP(GvIOp(gv))) {
#ifdef HAS_FCHOWN
+ int fd = PerlIO_fileno(IoIFP(GvIOn(gv)));
APPLY_TAINT_PROPER();
- if (fchown(PerlIO_fileno(IoIFP(GvIOn(gv))), val, val2))
+ if (fd < 0) {
+ SETERRNO(EBADF,RMS_IFI);
+ tot--;
+ } else if (fchown(fd, val, val2))
tot--;
#else
Perl_die(aTHX_ PL_no_func, "fchown");
#endif
}
else {
+ SETERRNO(EBADF,RMS_IFI);
tot--;
}
}
len -= 3;
}
if ((val = whichsig_pvn(s, len)) < 0)
- Perl_croak(aTHX_ "Unrecognized signal name \"%"SVf"\"", SVfARG(*mark));
+ Perl_croak(aTHX_ "Unrecognized signal name \"%" SVf "\"",
+ SVfARG(*mark));
}
else
{
}
APPLY_TAINT_PROPER();
tot = sp - mark;
-#ifdef VMS
- /* kill() doesn't do process groups (job trees?) under VMS */
- if (val == SIGKILL) {
- /* Use native sys$delprc() to insure that target process is
- * deleted; supervisor-mode images don't pay attention to
- * CRTL's emulation of Unix-style signals and kill()
- */
- while (++mark <= sp) {
- I32 proc;
- unsigned long int __vmssts;
- SvGETMAGIC(*mark);
- if (!(SvIOK(*mark) || SvNOK(*mark) || looks_like_number(*mark)))
- Perl_croak(aTHX_ "Can't kill a non-numeric process ID");
- proc = SvIV_nomg(*mark);
- APPLY_TAINT_PROPER();
- if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
- tot--;
- switch (__vmssts) {
- case SS$_NONEXPR:
- case SS$_NOSUCHNODE:
- SETERRNO(ESRCH,__vmssts);
- break;
- case SS$_NOPRIV:
- SETERRNO(EPERM,__vmssts);
- break;
- default:
- SETERRNO(EVMSERR,__vmssts);
- }
- }
- }
- PERL_ASYNC_CHECK();
- break;
- }
-#endif
+
while (++mark <= sp) {
Pid_t proc;
SvGETMAGIC(*mark);
}
else if (PL_unsafe) {
if (UNLINK(s))
+ {
tot--;
+ }
+#if defined(__amigaos4__) && defined(NEWLIB)
+ else
+ {
+ /* Under AmigaOS4 unlink only 'fails' if the
+ * filename is invalid. It may not remove the file
+ * if it's locked, so check if it's still around. */
+ if ((access(s,F_OK) != -1))
+ {
+ tot--;
+ }
+ }
+#endif
}
else { /* don't let root wipe out directories without -U */
- if (PerlLIO_lstat(s,&PL_statbuf) < 0)
+ Stat_t statbuf;
+ if (PerlLIO_lstat(s, &statbuf) < 0)
tot--;
- else if (S_ISDIR(PL_statbuf.st_mode)) {
+ else if (S_ISDIR(statbuf.st_mode)) {
+ SETERRNO(EISDIR, SS_NOPRIV);
tot--;
- SETERRNO(EISDIR, SS$_NOPRIV);
}
else {
if (UNLINK(s))
- tot--;
+ {
+ tot--;
+ }
+#if defined(__amigaos4__) && defined(NEWLIB)
+ else
+ {
+ /* Under AmigaOS4 unlink only 'fails' if the filename is invalid */
+ /* It may not remove the file if it's Locked, so check if it's still */
+ /* arround */
+ if((access(s,F_OK) != -1))
+ {
+ tot--;
+ }
+ }
+#endif
}
}
}
if ((gv = MAYBE_DEREF_GV(*mark))) {
if (GvIO(gv) && IoIFP(GvIOp(gv))) {
#ifdef HAS_FUTIMES
+ int fd = PerlIO_fileno(IoIFP(GvIOn(gv)));
APPLY_TAINT_PROPER();
- if (futimes(PerlIO_fileno(IoIFP(GvIOn(gv))),
- (struct timeval *) utbufp))
+ if (fd < 0) {
+ SETERRNO(EBADF,RMS_IFI);
+ tot--;
+ } else if (futimes(fd, (struct timeval *) utbufp))
tot--;
#else
Perl_die(aTHX_ PL_no_func, "futimes");
#undef APPLY_TAINT_PROPER
}
-/* Do the permissions allow some operation? Assumes statcache already set. */
+/* Do the permissions in *statbufp allow some operation? */
#ifndef VMS /* VMS' cando is in vms.c */
bool
Perl_cando(pTHX_ Mode_t mode, bool effective, const Stat_t *statbufp)
* is in the list of groups returned from getgroups().
*/
{
- dVAR;
-
PERL_ARGS_ASSERT_CANDO;
+ PERL_UNUSED_CONTEXT;
#ifdef DOSISH
/* [Comments and code from Len Reed]
/* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
* too so it will actually look into the files for magic numbers
*/
- return (mode & statbufp->st_mode) ? TRUE : FALSE;
+ return cBOOL(mode & statbufp->st_mode);
#else /* ! DOSISH */
# ifdef __CYGWIN__
static bool
S_ingroup(pTHX_ Gid_t testgid, bool effective)
{
- dVAR;
+#ifndef PERL_IMPLICIT_SYS
+ /* PERL_IMPLICIT_SYS like Win32: getegid() etc. require the context. */
+ PERL_UNUSED_CONTEXT;
+#endif
if (testgid == (effective ? PerlProc_getegid() : PerlProc_getgid()))
return TRUE;
#ifdef HAS_GETGROUPS
bool rc = FALSE;
anum = getgroups(0, gary);
- Newx(gary, anum, Groups_t);
- anum = getgroups(anum, gary);
- while (--anum >= 0)
- if (gary[anum] == testgid) {
- rc = TRUE;
- break;
- }
+ if (anum > 0) {
+ Newx(gary, anum, Groups_t);
+ anum = getgroups(anum, gary);
+ while (--anum >= 0)
+ if (gary[anum] == testgid) {
+ rc = TRUE;
+ break;
+ }
- Safefree(gary);
+ Safefree(gary);
+ }
return rc;
}
#else
I32
Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
{
- dVAR;
const key_t key = (key_t)SvNVx(*++mark);
SV *nsv = optype == OP_MSGGET ? NULL : *++mark;
const I32 flags = SvIVx(*++mark);
I32
Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
{
- dVAR;
char *a;
I32 ret = -1;
const I32 id = SvIVx(*++mark);
I32
Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
{
- dVAR;
#ifdef HAS_MSG
STRLEN len;
const I32 id = SvIVx(*++mark);
if (msize < 0)
Perl_croak(aTHX_ "Arg too short for msgsnd");
SETERRNO(0,0);
- return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
+ if (id >= 0 && flags >= 0) {
+ return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
+ } else {
+ SETERRNO(EINVAL,LIB_INVARG);
+ return -1;
+ }
#else
PERL_UNUSED_ARG(sp);
PERL_UNUSED_ARG(mark);
Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
{
#ifdef HAS_MSG
- dVAR;
char *mbuf;
long mtype;
I32 msize, flags, ret;
/* suppress warning when reading into undef var --jhi */
if (! SvOK(mstr))
- sv_setpvs(mstr, "");
+ SvPVCLEAR(mstr);
msize = SvIVx(*++mark);
mtype = (long)SvIVx(*++mark);
flags = SvIVx(*++mark);
mbuf = SvGROW(mstr, sizeof(long)+msize+1);
SETERRNO(0,0);
- ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
+ if (id >= 0 && msize >= 0 && flags >= 0) {
+ ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
+ } else {
+ SETERRNO(EINVAL,LIB_INVARG);
+ ret = -1;
+ }
if (ret >= 0) {
SvCUR_set(mstr, sizeof(long)+ret);
*SvEND(mstr) = '\0';
Perl_do_semop(pTHX_ SV **mark, SV **sp)
{
#ifdef HAS_SEM
- dVAR;
STRLEN opsize;
const I32 id = SvIVx(*++mark);
SV * const opstr = *++mark;
Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
{
#ifdef HAS_SHM
- dVAR;
char *shm;
struct shmid_ds shmds;
const I32 id = SvIVx(*++mark);
SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */
return -1;
}
- shm = (char *)shmat(id, NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
+ if (id >= 0) {
+ shm = (char *)shmat(id, NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
+ } else {
+ SETERRNO(EINVAL,LIB_INVARG);
+ return -1;
+ }
if (shm == (char *)-1) /* I hate System V IPC, I really do */
return -1;
if (optype == OP_SHMREAD) {
SvGETMAGIC(mstr);
SvUPGRADE(mstr, SVt_PV);
if (! SvOK(mstr))
- sv_setpvs(mstr, "");
+ SvPVCLEAR(mstr);
SvPOK_only(mstr);
mbuf = SvGROW(mstr, (STRLEN)msize+1);
Function called by C<do_readline> to spawn a glob (or do the glob inside
perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
-this glob starter is only used by miniperl during the build process.
-Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
+this glob starter is only used by miniperl during the build process,
+or when PERL_EXTERNAL_GLOB is defined.
+Moving it away shrinks F<pp_hot.c>; shrinking F<pp_hot.c> helps speed perl up.
=cut
*/
PerlIO *
Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
{
- dVAR;
SV * const tmpcmd = newSV(0);
PerlIO *fp;
STRLEN len;
fp = Perl_vms_start_glob(aTHX_ tmpglob, io);
#else /* !VMS */
-#ifdef DOSISH
-#ifdef OS2
+# ifdef DOSISH
+# if defined(OS2)
sv_setpv(tmpcmd, "for a in ");
sv_catsv(tmpcmd, tmpglob);
sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
-#else
-#ifdef DJGPP
+# elif defined(DJGPP)
sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
sv_catsv(tmpcmd, tmpglob);
-#else
+# else
sv_setpv(tmpcmd, "perlglob ");
sv_catsv(tmpcmd, tmpglob);
sv_catpv(tmpcmd, " |");
-#endif /* !DJGPP */
-#endif /* !OS2 */
-#else /* !DOSISH */
-#if defined(CSH)
+# endif
+# elif defined(CSH)
sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
sv_catsv(tmpcmd, tmpglob);
sv_catpv(tmpcmd, "' 2>/dev/null |");
-#else
+# else
sv_setpv(tmpcmd, "echo ");
sv_catsv(tmpcmd, tmpglob);
sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
-#endif /* !CSH */
-#endif /* !DOSISH */
+# endif /* !DOSISH && !CSH */
{
- GV * const envgv = gv_fetchpvs("ENV", 0, SVt_PVHV);
- SV ** const home = hv_fetchs(GvHV(envgv), "HOME", 0);
- SV ** const path = hv_fetchs(GvHV(envgv), "PATH", 0);
- if (home && *home) SvGETMAGIC(*home);
- if (path && *path) SvGETMAGIC(*path);
- save_hash(gv_fetchpvs("ENV", 0, SVt_PVHV));
- if (home && *home) SvSETMAGIC(*home);
- if (path && *path) SvSETMAGIC(*path);
- }
- (void)do_open(PL_last_in_gv, (char*)SvPVX_const(tmpcmd), SvCUR(tmpcmd),
- FALSE, O_RDONLY, 0, NULL);
+ SV ** const svp = hv_fetchs(GvHVn(PL_envgv), "LS_COLORS", 0);
+ if (svp && *svp)
+ save_helem_flags(GvHV(PL_envgv),
+ newSVpvs_flags("LS_COLORS", SVs_TEMP), svp,
+ SAVEf_SETMAGIC);
+ }
+ (void)do_open6(PL_last_in_gv, SvPVX_const(tmpcmd), SvCUR(tmpcmd),
+ NULL, NULL, 0);
fp = IoIFP(io);
#endif /* !VMS */
LEAVE;
}
/*
- * Local variables:
- * c-indentation-style: bsd
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- *
* ex: set ts=8 sts=4 sw=4 et:
*/
https://perl5.git.perl.org / perl5.git / blobdiff