#include <signal.h>
+void
+Perl_setfd_cloexec(int fd)
+{
+ assert(fd >= 0);
+#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
+ (void) fcntl(fd, F_SETFD, FD_CLOEXEC);
+#endif
+}
+
+void
+Perl_setfd_inhexec(int fd)
+{
+ assert(fd >= 0);
+#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
+ (void) fcntl(fd, F_SETFD, 0);
+#endif
+}
+
+void
+Perl_setfd_cloexec_for_nonsysfd(pTHX_ int fd)
+{
+ assert(fd >= 0);
+ if(fd > PL_maxsysfd)
+ setfd_cloexec(fd);
+}
+
+void
+Perl_setfd_inhexec_for_sysfd(pTHX_ int fd)
+{
+ assert(fd >= 0);
+ if(fd <= PL_maxsysfd)
+ setfd_inhexec(fd);
+}
+void
+Perl_setfd_cloexec_or_inhexec_by_sysfdness(pTHX_ int fd)
+{
+ assert(fd >= 0);
+ if(fd <= PL_maxsysfd)
+ setfd_inhexec(fd);
+ else
+ setfd_cloexec(fd);
+}
+
+
+#define DO_GENOPEN_THEN_CLOEXEC(GENOPEN_NORMAL, GENSETFD_CLOEXEC) \
+ do { \
+ int res = (GENOPEN_NORMAL); \
+ if(LIKELY(res != -1)) GENSETFD_CLOEXEC; \
+ return res; \
+ } while(0)
+#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC) && \
+ defined(F_GETFD)
+enum { CLOEXEC_EXPERIMENT = 0, CLOEXEC_AT_OPEN, CLOEXEC_AFTER_OPEN };
+# define DO_GENOPEN_EXPERIMENTING_CLOEXEC(strategy, TESTFD, GENOPEN_CLOEXEC, \
+ GENOPEN_NORMAL, GENSETFD_CLOEXEC) \
+ do { \
+ switch (strategy) { \
+ case CLOEXEC_EXPERIMENT: default: { \
+ int res = (GENOPEN_CLOEXEC), eno; \
+ if (LIKELY(res != -1)) { \
+ int fdflags = fcntl((TESTFD), F_GETFD); \
+ if (LIKELY(fdflags != -1) && \
+ LIKELY(fdflags & FD_CLOEXEC)) { \
+ strategy = CLOEXEC_AT_OPEN; \
+ } else { \
+ strategy = CLOEXEC_AFTER_OPEN; \
+ GENSETFD_CLOEXEC; \
+ } \
+ } else if (UNLIKELY((eno = errno) == EINVAL || \
+ eno == ENOSYS)) { \
+ res = (GENOPEN_NORMAL); \
+ if (LIKELY(res != -1)) { \
+ strategy = CLOEXEC_AFTER_OPEN; \
+ GENSETFD_CLOEXEC; \
+ } else if (!LIKELY((eno = errno) == EINVAL || \
+ eno == ENOSYS)) { \
+ strategy = CLOEXEC_AFTER_OPEN; \
+ } \
+ } \
+ return res; \
+ } \
+ case CLOEXEC_AT_OPEN: \
+ return (GENOPEN_CLOEXEC); \
+ case CLOEXEC_AFTER_OPEN: \
+ DO_GENOPEN_THEN_CLOEXEC(GENOPEN_NORMAL, GENSETFD_CLOEXEC); \
+ } \
+ } while(0)
+#else
+# define DO_GENOPEN_EXPERIMENTING_CLOEXEC(strategy, TESTFD, GENOPEN_CLOEXEC, \
+ GENOPEN_NORMAL, GENSETFD_CLOEXEC) \
+ DO_GENOPEN_THEN_CLOEXEC(GENOPEN_NORMAL, GENSETFD_CLOEXEC)
+#endif
+
+#define DO_ONEOPEN_THEN_CLOEXEC(ONEOPEN_NORMAL) \
+ do { \
+ int fd; \
+ DO_GENOPEN_THEN_CLOEXEC(fd = (ONEOPEN_NORMAL), \
+ setfd_cloexec(fd)); \
+ } while(0)
+#define DO_ONEOPEN_EXPERIMENTING_CLOEXEC(strategy, \
+ ONEOPEN_CLOEXEC, ONEOPEN_NORMAL) \
+ do { \
+ int fd; \
+ DO_GENOPEN_EXPERIMENTING_CLOEXEC(strategy, \
+ fd, \
+ fd = (ONEOPEN_CLOEXEC), \
+ fd = (ONEOPEN_NORMAL), setfd_cloexec(fd)); \
+ } while(0)
+
+#define DO_PIPESETFD_CLOEXEC(PIPEFD) \
+ do { \
+ setfd_cloexec((PIPEFD)[0]); \
+ setfd_cloexec((PIPEFD)[1]); \
+ } while(0)
+#define DO_PIPEOPEN_THEN_CLOEXEC(PIPEFD, PIPEOPEN_NORMAL) \
+ DO_GENOPEN_THEN_CLOEXEC(PIPEOPEN_NORMAL, DO_PIPESETFD_CLOEXEC(PIPEFD))
+#define DO_PIPEOPEN_EXPERIMENTING_CLOEXEC(strategy, PIPEFD, PIPEOPEN_CLOEXEC, \
+ PIPEOPEN_NORMAL) \
+ DO_GENOPEN_EXPERIMENTING_CLOEXEC(strategy, \
+ (PIPEFD)[0], PIPEOPEN_CLOEXEC, \
+ PIPEOPEN_NORMAL, DO_PIPESETFD_CLOEXEC(PIPEFD))
+
+int
+Perl_PerlLIO_dup_cloexec(pTHX_ int oldfd)
+{
+#if !defined(PERL_IMPLICIT_SYS) && defined(F_DUPFD_CLOEXEC)
+ /*
+ * struct IPerlLIO doesn't cover fcntl(), and there's no clear way
+ * to extend it, so for the time being this just isn't available on
+ * PERL_IMPLICIT_SYS builds.
+ */
+ dVAR;
+ DO_ONEOPEN_EXPERIMENTING_CLOEXEC(
+ PL_strategy_dup,
+ fcntl(oldfd, F_DUPFD_CLOEXEC, 0),
+ PerlLIO_dup(oldfd));
+#else
+ DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_dup(oldfd));
+#endif
+}
+
+int
+Perl_PerlLIO_dup2_cloexec(pTHX_ int oldfd, int newfd)
+{
+#if !defined(PERL_IMPLICIT_SYS) && defined(HAS_DUP3) && defined(O_CLOEXEC)
+ /*
+ * struct IPerlLIO doesn't cover dup3(), and there's no clear way
+ * to extend it, so for the time being this just isn't available on
+ * PERL_IMPLICIT_SYS builds.
+ */
+ dVAR;
+ DO_ONEOPEN_EXPERIMENTING_CLOEXEC(
+ PL_strategy_dup2,
+ dup3(oldfd, newfd, O_CLOEXEC),
+ PerlLIO_dup2(oldfd, newfd));
+#else
+ DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_dup2(oldfd, newfd));
+#endif
+}
+
+int
+Perl_PerlLIO_open_cloexec(pTHX_ const char *file, int flag)
+{
+ dVAR;
+ PERL_ARGS_ASSERT_PERLLIO_OPEN_CLOEXEC;
+#if defined(O_CLOEXEC)
+ DO_ONEOPEN_EXPERIMENTING_CLOEXEC(
+ PL_strategy_open,
+ PerlLIO_open(file, flag | O_CLOEXEC),
+ PerlLIO_open(file, flag));
+#else
+ DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_open(file, flag));
+#endif
+}
+
+int
+Perl_PerlLIO_open3_cloexec(pTHX_ const char *file, int flag, int perm)
+{
+ dVAR;
+ PERL_ARGS_ASSERT_PERLLIO_OPEN3_CLOEXEC;
+#if defined(O_CLOEXEC)
+ DO_ONEOPEN_EXPERIMENTING_CLOEXEC(
+ PL_strategy_open3,
+ PerlLIO_open3(file, flag | O_CLOEXEC, perm),
+ PerlLIO_open3(file, flag, perm));
+#else
+ DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_open3(file, flag, perm));
+#endif
+}
+
+int
+Perl_my_mkstemp_cloexec(char *templte)
+{
+ dVAR;
+ PERL_ARGS_ASSERT_MY_MKSTEMP_CLOEXEC;
+#if defined(O_CLOEXEC)
+ DO_ONEOPEN_EXPERIMENTING_CLOEXEC(
+ PL_strategy_mkstemp,
+ Perl_my_mkostemp(templte, O_CLOEXEC),
+ Perl_my_mkstemp(templte));
+#else
+ DO_ONEOPEN_THEN_CLOEXEC(Perl_my_mkstemp(templte));
+#endif
+}
+
+int
+Perl_my_mkostemp_cloexec(char *templte, int flags)
+{
+ dVAR;
+ PERL_ARGS_ASSERT_MY_MKOSTEMP_CLOEXEC;
+#if defined(O_CLOEXEC)
+ DO_ONEOPEN_EXPERIMENTING_CLOEXEC(
+ PL_strategy_mkstemp,
+ Perl_my_mkostemp(templte, flags | O_CLOEXEC),
+ Perl_my_mkostemp(templte, flags));
+#else
+ DO_ONEOPEN_THEN_CLOEXEC(Perl_my_mkostemp(templte, flags));
+#endif
+}
+
+#ifdef HAS_PIPE
+int
+Perl_PerlProc_pipe_cloexec(pTHX_ int *pipefd)
+{
+ dVAR;
+ PERL_ARGS_ASSERT_PERLPROC_PIPE_CLOEXEC;
+ /*
+ * struct IPerlProc doesn't cover pipe2(), and there's no clear way
+ * to extend it, so for the time being this just isn't available on
+ * PERL_IMPLICIT_SYS builds.
+ */
+# if !defined(PERL_IMPLICIT_SYS) && defined(HAS_PIPE2) && defined(O_CLOEXEC)
+ DO_PIPEOPEN_EXPERIMENTING_CLOEXEC(PL_strategy_pipe, pipefd,
+ pipe2(pipefd, O_CLOEXEC),
+ PerlProc_pipe(pipefd));
+# else
+ DO_PIPEOPEN_THEN_CLOEXEC(pipefd, PerlProc_pipe(pipefd));
+# endif
+}
+#endif
+
+#ifdef HAS_SOCKET
+
+int
+Perl_PerlSock_socket_cloexec(pTHX_ int domain, int type, int protocol)
+{
+# if defined(SOCK_CLOEXEC)
+ dVAR;
+ DO_ONEOPEN_EXPERIMENTING_CLOEXEC(
+ PL_strategy_socket,
+ PerlSock_socket(domain, type | SOCK_CLOEXEC, protocol),
+ PerlSock_socket(domain, type, protocol));
+# else
+ DO_ONEOPEN_THEN_CLOEXEC(PerlSock_socket(domain, type, protocol));
+# endif
+}
+
+int
+Perl_PerlSock_accept_cloexec(pTHX_ int listenfd, struct sockaddr *addr,
+ Sock_size_t *addrlen)
+{
+# if !defined(PERL_IMPLICIT_SYS) && \
+ defined(HAS_ACCEPT4) && defined(SOCK_CLOEXEC)
+ /*
+ * struct IPerlSock doesn't cover accept4(), and there's no clear
+ * way to extend it, so for the time being this just isn't available
+ * on PERL_IMPLICIT_SYS builds.
+ */
+ dVAR;
+ DO_ONEOPEN_EXPERIMENTING_CLOEXEC(
+ PL_strategy_accept,
+ accept4(listenfd, addr, addrlen, SOCK_CLOEXEC),
+ PerlSock_accept(listenfd, addr, addrlen));
+# else
+ DO_ONEOPEN_THEN_CLOEXEC(PerlSock_accept(listenfd, addr, addrlen));
+# endif
+}
+
+#endif
+
+#if defined (HAS_SOCKETPAIR) || \
+ (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && \
+ defined(AF_INET) && defined(PF_INET))
+int
+Perl_PerlSock_socketpair_cloexec(pTHX_ int domain, int type, int protocol,
+ int *pairfd)
+{
+ dVAR;
+ PERL_ARGS_ASSERT_PERLSOCK_SOCKETPAIR_CLOEXEC;
+# ifdef SOCK_CLOEXEC
+ DO_PIPEOPEN_EXPERIMENTING_CLOEXEC(PL_strategy_socketpair, pairfd,
+ PerlSock_socketpair(domain, type | SOCK_CLOEXEC, protocol, pairfd),
+ PerlSock_socketpair(domain, type, protocol, pairfd));
+# else
+ DO_PIPEOPEN_THEN_CLOEXEC(pairfd,
+ PerlSock_socketpair(domain, type, protocol, pairfd));
+# endif
+}
+#endif
+
static IO *
S_openn_setup(pTHX_ GV *gv, char *mode, PerlIO **saveifp, PerlIO **saveofp,
int *savefd, char *savetype)
}
else {
if (dodup)
- wanted_fd = PerlLIO_dup(wanted_fd);
+ wanted_fd = PerlLIO_dup_cloexec(wanted_fd);
else
was_fdopen = TRUE;
if (!(fp = PerlIO_openn(aTHX_ type,mode,wanted_fd,0,0,NULL,num_svs,svp))) {
)
{
- GCC_DIAG_IGNORE(-Wformat-nonliteral); /* PL_warn_nl is constant */
+ GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral); /* PL_warn_nl is constant */
Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
- GCC_DIAG_RESTORE;
+ GCC_DIAG_RESTORE_STMT;
}
goto say_false;
}
if (was_fdopen) {
/* need to close fp without closing underlying fd */
int ofd = PerlIO_fileno(fp);
- 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. */
- /* 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
+ int dupfd = ofd >= 0 ? PerlLIO_dup_cloexec(ofd) : -1;
if (ofd < 0 || dupfd < 0) {
if (dupfd >= 0)
PerlLIO_close(dupfd);
goto say_false;
}
PerlIO_close(fp);
- PerlLIO_dup2(dupfd, ofd);
-#if defined(HAS_FCNTL) && defined(F_SETFD)
- /* 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_dup2_cloexec(dupfd, ofd);
+ setfd_inhexec_for_sysfd(ofd);
PerlLIO_close(dupfd);
}
else
PerlIO_clearerr(fp);
fd = PerlIO_fileno(fp);
}
-#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;
{
int old_umask = umask(0177);
- fd = Perl_my_mkstemp(SvPVX(temp_out_name));
+ fd = Perl_my_mkstemp_cloexec(SvPVX(temp_out_name));
umask(old_umask);
}
/* Win32 doesn't necessarily return useful information
* in st_dev, st_ino.
*/
-#ifndef ARGV_USE_ATFUNCTIONS
-# ifndef DOSISH
-# define ARGV_USE_STAT_INO
-# endif
+#ifndef DOSISH
+# define ARGV_USE_STAT_INO
#endif
#define ARGVMG_BACKUP_NAME 0
#define ARGVMG_ORIG_MODE 3
#define ARGVMG_ORIG_PID 4
-#if defined(ARGV_USE_ATFUNCTIONS)
-#define ARGVMG_ORIG_DIRP 5
-#elif defined(ARGV_USE_STAT_INO)
/* 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.
*/
-#define ARGVMG_ORIG_CWD_STAT 5
+#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) {
- SV **temp_psv;
-
PERL_UNUSED_ARG(io);
/* note this can be entered once the file has been
/* 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;
+ if (mg->mg_obj) {
#ifdef ARGV_USE_ATFUNCTIONS
SV **dir_psv;
DIR *dir;
+
+ 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));
#endif
- PerlIO *iop = IoIFP(io);
+ if (IoIFP(io)) {
+ if (PL_phase == PERL_PHASE_DESTRUCT && PL_statusvalue == 0) {
+ (void)argvout_final(mg, (IO*)io, FALSE);
+ }
+ else {
+ SV **pid_psv;
+ PerlIO *iop = IoIFP(io);
- assert(SvTYPE(mg->mg_obj) == SVt_PVAV);
+ assert(SvTYPE(mg->mg_obj) == SVt_PVAV);
- pid_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_PID, FALSE);
+ pid_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_PID, FALSE);
- assert(pid_psv && *pid_psv);
+ 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 */
- (void)PerlIO_close(iop);
- IoIFP(io) = IoOFP(io) = NULL;
- temp_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_TEMP_NAME, FALSE);
- assert(temp_psv && *temp_psv && SvPOK(*temp_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) {
- (void)unlinkat(my_dirfd(dir), SvPVX(*temp_psv), 0);
- closedir(dir);
- }
+ if (dir) {
+ if (unlinkat(my_dirfd(dir), temp_pv, 0) < 0 &&
+ NotSupported(errno))
+ (void)UNLINK(temp_pv);
+ }
#else
- (void)UNLINK(SvPVX(*temp_psv));
+ (void)UNLINK(temp_pv);
#endif
+ }
+ }
}
+#ifdef ARGV_USE_ATFUNCTIONS
+ if (dir)
+ closedir(dir);
+#endif
}
return 0;
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:
- 5: the DIR * for the current directory when we open the file, stored as an IV
+ 6: the DIR * for the current directory when we open the file, stored as an IV
*/
static const MGVTBL argvout_vtbl =
}
#ifdef ARGV_USE_ATFUNCTIONS
-# if defined(__FreeBSD__)
+# if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
/* FreeBSD 11 renameat() mis-behaves strangely with absolute paths in cases where the
* equivalent rename() succeeds
# else
# define S_my_renameat(dh1, pv1, dh2, pv2) renameat((dh1), (pv1), (dh2), (pv2))
-# endif /* if defined(__FreeBSD__) */
+# endif /* if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) */
#endif
-/* explicit renamed to avoid C++ conflict -- kja */
-bool
-Perl_do_close(pTHX_ GV *gv, bool not_implicit)
-{
- bool retval;
- IO *io;
- MAGIC *mg;
+static bool
+S_dir_unchanged(pTHX_ const char *orig_pv, MAGIC *mg) {
+ Stat_t statbuf;
- if (!gv)
- gv = PL_argvgv;
- if (!gv || !isGV_with_GP(gv)) {
- if (not_implicit)
- SETERRNO(EBADF,SS_IVCHAN);
- return FALSE;
+#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");
}
- io = GvIO(gv);
- if (!io) { /* never opened */
- if (not_implicit) {
- report_evil_fh(gv);
- SETERRNO(EBADF,SS_IVCHAN);
- }
- return FALSE;
+#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 %s: %s",
+ orig_pv,
+ "Work file is missing - did you change directory?");
}
- if ((mg = mg_findext((SV*)io, PERL_MAGIC_uvar, &argvout_vtbl))
- && mg->mg_obj) {
+#endif
+
+ return TRUE;
+}
+
+#define dir_unchanged(orig_psv, mg) \
+ S_dir_unchanged(aTHX_ (orig_psv), (mg))
+
+STATIC bool
+S_argvout_final(pTHX_ MAGIC *mg, IO *io, bool not_implicit) {
+ bool retval;
+
+ /* ensure args are checked before we start using them */
+ PERL_ARGS_ASSERT_ARGVOUT_FINAL;
+
+ {
/* 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);
SV **dir_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_DIRP, FALSE);
DIR *dir;
int dfd;
-#elif defined(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;
-#endif
-#ifndef ARGV_USE_ATFUNCTIONS
- Stat_t statbuf;
#endif
UV mode;
int fd;
}
if (retval) {
-#ifdef ARGV_USE_STAT_INO
- /* 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(SvPVX(*orig_psv))
- && 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 %" SVf ": %s",
- *orig_psv, "Current directory has changed");
- }
-#endif
-#if !defined(ARGV_USE_ATFUNCTIONS) && !defined(ARGV_USE_STAT_INO)
- /* Some platforms don't have useful st_ino etc, so just
- check we can see the work file.
- */
- if (!PERL_FILE_IS_ABSOLUTE(SvPVX(*orig_psv))
- && PerlLIO_stat(SvPVX(*temp_psv), &statbuf) < 0) {
- Perl_croak(aTHX_ "Cannot complete in-place edit of %" SVf ": %s",
- *orig_psv,
- "Work file is missing - did you change directory?");
- }
-#endif
-
#if defined(DOSISH) || defined(__CYGWIN__)
if (PL_argvgv && GvIOp(PL_argvgv)
&& IoIFP(GvIOp(PL_argvgv))
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
+ 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
#ifdef HAS_RENAME
if (
# ifdef ARGV_USE_ATFUNCTIONS
- S_my_renameat(dfd, orig_pv, dfd, SvPVX(*back_psv)) < 0
+ 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
- (void)unlinkat(dfd, SvPVX_const(*temp_psv), 0);
+ 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
#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
+ 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
- (void)unlinkat(dfd, SvPVX_const(*temp_psv), 0);
+ 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));
+ /* diag_listed_as: Cannot complete in-place edit of %s: %s */
+ Perl_croak(aTHX_ "Cannot complete in-place edit of %s: failed to rename work file '%s' to '%s': %s",
+ orig_pv, SvPVX(*temp_psv), orig_pv, Strerror(errno));
}
abort_inplace:
UNLINK(SvPVX_const(*temp_psv));
}
else {
#ifdef ARGV_USE_ATFUNCTIONS
- unlinkat(dfd, SvPVX_const(*temp_psv), 0);
+ if (unlinkat(dfd, SvPVX_const(*temp_psv), 0) &&
+ NotSupported(errno))
+ UNLINK(SvPVX_const(*temp_psv));
+
#else
UNLINK(SvPVX_const(*temp_psv));
#endif
SvPVX(*temp_psv), Strerror(errno));
}
}
- freext:
+ freext:
+ ;
+ }
+ return retval;
+}
+
+/* explicit renamed to avoid C++ conflict -- kja */
+bool
+Perl_do_close(pTHX_ GV *gv, bool not_implicit)
+{
+ bool retval;
+ IO *io;
+ MAGIC *mg;
+
+ if (!gv)
+ gv = PL_argvgv;
+ if (!gv || !isGV_with_GP(gv)) {
+ if (not_implicit)
+ SETERRNO(EBADF,SS_IVCHAN);
+ return FALSE;
+ }
+ io = GvIO(gv);
+ if (!io) { /* never opened */
+ if (not_implicit) {
+ report_evil_fh(gv);
+ SETERRNO(EBADF,SS_IVCHAN);
+ }
+ return FALSE;
+ }
+ if ((mg = mg_findext((SV*)io, PERL_MAGIC_uvar, &argvout_vtbl))
+ && mg->mg_obj) {
+ retval = argvout_final(mg, io, not_implicit);
mg_freeext((SV*)io, PERL_MAGIC_uvar, &argvout_vtbl);
}
else {
if (IoIFP(io)) {
if (IoTYPE(io) == IoTYPE_PIPE) {
- const int status = PerlProc_pclose(IoIFP(io));
+ PerlIO *fh = IoIFP(io);
+ int status;
+
+ /* my_pclose() can propagate signals which might bypass any code
+ after the call here if the signal handler throws an exception.
+ This would leave the handle in the IO object and try to close it again
+ when the SV is destroyed on unwind or global destruction.
+ So NULL it early.
+ */
+ IoOFP(io) = IoIFP(io) = NULL;
+ status = PerlProc_pclose(fh);
if (not_implicit) {
STATUS_NATIVE_CHILD_SET(status);
retval = (STATUS_UNIX == 0);
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 */
+ GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral); /* PL_warn_nl is constant */
Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
- GCC_DIAG_RESTORE;
+ GCC_DIAG_RESTORE_STMT;
}
return PL_laststatval;
}
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 */
+ GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral); /* PL_warn_nl is constant */
Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
- GCC_DIAG_RESTORE;
+ GCC_DIAG_RESTORE_STMT;
}
return PL_laststatval;
}
Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
#else
assert(sp >= mark);
+ ENTER;
{
- const char **a;
+ const char **argv, **a;
const char *tmps = NULL;
- Newx(PL_Argv, sp - mark + 1, const char*);
- a = PL_Argv;
+ Newx(argv, sp - mark + 1, const char*);
+ SAVEFREEPV(argv);
+ a = argv;
while (++mark <= sp) {
- if (*mark)
- *a++ = SvPV_nolen_const(*mark);
- else
+ if (*mark) {
+ char *arg = savepv(SvPV_nolen_const(*mark));
+ SAVEFREEPV(arg);
+ *a++ = arg;
+ } else
*a++ = "";
}
*a = NULL;
- if (really)
- tmps = SvPV_nolen_const(really);
- if ((!really && PL_Argv[0] && *PL_Argv[0] != '/') ||
+ if (really) {
+ tmps = savepv(SvPV_nolen_const(really));
+ SAVEFREEPV(tmps);
+ }
+ if ((!really && argv[0] && *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 if (PL_Argv[0]) {
- PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
+ PerlProc_execvp(tmps,EXEC_ARGV_CAST(argv));
+ } else if (argv[0]) {
+ PerlProc_execvp(argv[0],EXEC_ARGV_CAST(argv));
} else {
SETERRNO(ENOENT,RMS_FNF);
}
PERL_FPU_POST_EXEC
- S_exec_failed(aTHX_ (really ? tmps : PL_Argv[0] ? PL_Argv[0] : ""), fd, do_report);
+ S_exec_failed(aTHX_ (really ? tmps : argv[0] ? argv[0] : ""), fd, do_report);
}
- do_execfree();
+ LEAVE;
#endif
return FALSE;
}
-void
-Perl_do_execfree(pTHX)
-{
- Safefree(PL_Argv);
- PL_Argv = NULL;
- Safefree(PL_Cmd);
- PL_Cmd = NULL;
-}
-
#ifdef PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
bool
Perl_do_exec3(pTHX_ const char *incmd, int fd, int do_report)
{
dVAR;
- const char **a;
+ const char **argv, **a;
char *s;
char *buf;
char *cmd;
PERL_ARGS_ASSERT_DO_EXEC3;
+ ENTER;
Newx(buf, cmdlen, char);
+ SAVEFREEPV(buf);
cmd = buf;
memcpy(cmd, incmd, cmdlen);
PERL_FPU_POST_EXEC
*s = '\'';
S_exec_failed(aTHX_ PL_cshname, fd, do_report);
- Safefree(buf);
- return FALSE;
+ goto leave;
}
}
}
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);
- return FALSE;
+ goto leave;
}
}
- Newx(PL_Argv, (s - cmd) / 2 + 2, const char*);
- PL_Cmd = savepvn(cmd, s-cmd);
- a = PL_Argv;
- for (s = PL_Cmd; *s;) {
+ Newx(argv, (s - cmd) / 2 + 2, const char*);
+ SAVEFREEPV(argv);
+ cmd = savepvn(cmd, s-cmd);
+ SAVEFREEPV(cmd);
+ a = argv;
+ for (s = cmd; *s;) {
while (isSPACE(*s))
s++;
if (*s)
*s++ = '\0';
}
*a = NULL;
- if (PL_Argv[0]) {
+ if (argv[0]) {
PERL_FPU_PRE_EXEC
- PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
+ PerlProc_execvp(argv[0],EXEC_ARGV_CAST(argv));
PERL_FPU_POST_EXEC
- if (errno == ENOEXEC) { /* for system V NIH syndrome */
- do_execfree();
+ if (errno == ENOEXEC) /* for system V NIH syndrome */
goto doshell;
- }
- S_exec_failed(aTHX_ PL_Argv[0], fd, do_report);
+ S_exec_failed(aTHX_ argv[0], fd, do_report);
}
- do_execfree();
- Safefree(buf);
+leave:
+ LEAVE;
return FALSE;
}
# if defined(OS2)
sv_setpv(tmpcmd, "for a in ");
sv_catsv(tmpcmd, tmpglob);
- sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
+ sv_catpvs(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
# elif defined(DJGPP)
sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
sv_catsv(tmpcmd, tmpglob);
# else
sv_setpv(tmpcmd, "perlglob ");
sv_catsv(tmpcmd, tmpglob);
- sv_catpv(tmpcmd, " |");
+ sv_catpvs(tmpcmd, " |");
# endif
# elif defined(CSH)
sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
- sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
+ sv_catpvs(tmpcmd, " -cf 'set nonomatch; glob ");
sv_catsv(tmpcmd, tmpglob);
- sv_catpv(tmpcmd, "' 2>/dev/null |");
+ sv_catpvs(tmpcmd, "' 2>/dev/null |");
# else
sv_setpv(tmpcmd, "echo ");
sv_catsv(tmpcmd, tmpglob);
- sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
+ sv_catpvs(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
# endif /* !DOSISH && !CSH */
{
SV ** const svp = hv_fetchs(GvHVn(PL_envgv), "LS_COLORS", 0);