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-rw-r--r--usr/src/lib/librename/Makefile44
-rw-r--r--usr/src/lib/librename/Makefile.com34
-rw-r--r--usr/src/lib/librename/amd64/Makefile19
-rw-r--r--usr/src/lib/librename/common/librename.c229
-rw-r--r--usr/src/lib/librename/common/librename.h43
-rw-r--r--usr/src/lib/librename/common/llib-lrename19
-rw-r--r--usr/src/lib/librename/common/mapfile-vers41
-rw-r--r--usr/src/lib/librename/i386/Makefile18
-rw-r--r--usr/src/lib/librename/sparc/Makefile18
-rw-r--r--usr/src/lib/librename/sparcv9/Makefile19
10 files changed, 484 insertions, 0 deletions
diff --git a/usr/src/lib/librename/Makefile b/usr/src/lib/librename/Makefile
new file mode 100644
index 0000000000..222523d9a1
--- /dev/null
+++ b/usr/src/lib/librename/Makefile
@@ -0,0 +1,44 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source. A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright (c) 2014 Joyent, Inc. All rights reserved.
+#
+
+include ../Makefile.lib
+
+HDRS = librename.h
+HDRDIR = common
+SUBDIRS = $(MACH)
+$(BUILD64)SUBDIRS += $(MACH64)
+
+all := TARGET = all
+clean := TARGET = clean
+clobber := TARGET = clobber
+install := TARGET = install
+lint := TARGET = lint
+
+.KEEP_STATE:
+
+all clean clobber lint: $(SUBDIRS)
+
+install: $(SUBDIRS) $(VARPD_MAPFILES) install_h
+
+install_h: $(ROOTHDRS)
+
+check: $(CHECKHDRS)
+
+$(SUBDIRS): FRC
+ @cd $@; pwd; $(MAKE) $(TARGET)
+
+FRC:
+
+include ../Makefile.targ
diff --git a/usr/src/lib/librename/Makefile.com b/usr/src/lib/librename/Makefile.com
new file mode 100644
index 0000000000..f0a22f25ac
--- /dev/null
+++ b/usr/src/lib/librename/Makefile.com
@@ -0,0 +1,34 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source. A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright (c) 2014 Joyent, Inc. All rights reserved.
+#
+
+LIBRARY = librename.a
+VERS = .1
+OBJECTS = librename.o \
+
+include ../../Makefile.lib
+
+LIBS = $(DYNLIB) $(LINTLIB)
+LDLIBS += -lc
+CPPFLAGS += -I../common
+
+SRCDIR = ../common
+
+.KEEP_STATE:
+
+all: $(LIBS)
+
+lint: lintcheck
+
+include ../../Makefile.targ
diff --git a/usr/src/lib/librename/amd64/Makefile b/usr/src/lib/librename/amd64/Makefile
new file mode 100644
index 0000000000..15d904c616
--- /dev/null
+++ b/usr/src/lib/librename/amd64/Makefile
@@ -0,0 +1,19 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source. A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright (c) 2014 Joyent, Inc. All rights reserved.
+#
+
+include ../Makefile.com
+include ../../Makefile.lib.64
+
+install: all $(ROOTLIBS64) $(ROOTLINKS64) $(ROOTLINT64)
diff --git a/usr/src/lib/librename/common/librename.c b/usr/src/lib/librename/common/librename.c
new file mode 100644
index 0000000000..1e198a50a3
--- /dev/null
+++ b/usr/src/lib/librename/common/librename.c
@@ -0,0 +1,229 @@
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source. A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ */
+
+/*
+ * Copyright (c) 2014 Joyent, Inc. All rights reserved.
+ */
+
+/*
+ * Implementation of librename(3RENAME) interfaces.
+ */
+
+#include <librename.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <synch.h>
+
+typedef enum librename_atomic_state {
+ LIBRENAME_ATOMIC_INITIAL = 0x0,
+ LIBRENAME_ATOMIC_FSYNC,
+ LIBRENAME_ATOMIC_RENAME,
+ LIBRENAME_ATOMIC_POSTSYNC,
+ LIBRENAME_ATOMIC_COMPLETED
+} librename_atomic_state_t;
+
+struct librename_atomic {
+ char *lra_fname; /* RO */
+ char *lra_altname; /* RO */
+ int lra_dirfd; /* RO */
+ int lra_tmpfd; /* RO */
+ mutex_t lra_lock;
+ librename_atomic_state_t lra_state; /* lra_lock */
+};
+
+int
+librename_atomic_fdinit(int fd, const char *file, const char *prefix,
+ int mode, int flags, librename_atomic_t **outp)
+{
+ int ret;
+ int oflags;
+ librename_atomic_t *lrap;
+ struct stat st;
+
+ if (fd < 0 || file == NULL || outp == NULL)
+ return (EINVAL);
+
+ if (flags & ~(LIBRENAME_ATOMIC_NOUNLINK | LIBRENAME_ATOMIC_CLOEXEC))
+ return (EINVAL);
+
+ if (strchr(file, '/') != NULL)
+ return (EINVAL);
+
+ if (prefix != NULL && strchr(prefix, '/') != NULL)
+ return (EINVAL);
+
+ *outp = NULL;
+ lrap = malloc(sizeof (librename_atomic_t));
+ if (lrap == NULL)
+ return (errno);
+
+ if (fstat(fd, &st) != 0) {
+ ret = errno;
+ free(lrap);
+ return (ret);
+ }
+
+ if (!S_ISDIR(st.st_mode)) {
+ free(lrap);
+ return (ENOTDIR);
+ }
+
+ if ((lrap->lra_dirfd = dup(fd)) == -1) {
+ ret = errno;
+ free(lrap);
+ return (ret);
+ }
+
+
+ lrap->lra_fname = strdup(file);
+ if (lrap->lra_fname == NULL) {
+ ret = errno;
+ if (close(lrap->lra_dirfd) != 0)
+ abort();
+ free(lrap);
+ return (ret);
+ }
+
+ if (prefix == NULL) {
+ ret = asprintf(&lrap->lra_altname, ".%d.%s", (int)getpid(),
+ file);
+ } else {
+ ret = asprintf(&lrap->lra_altname, "%s%s", prefix, file);
+ }
+ if (ret == -1) {
+ ret = errno;
+ free(lrap->lra_fname);
+ if (close(lrap->lra_dirfd) != 0)
+ abort();
+ free(lrap);
+ return (errno);
+ }
+
+ oflags = O_CREAT | O_TRUNC | O_RDWR | O_NOFOLLOW;
+ if (flags & LIBRENAME_ATOMIC_NOUNLINK)
+ oflags |= O_EXCL;
+
+ if (flags & LIBRENAME_ATOMIC_CLOEXEC)
+ oflags |= O_CLOEXEC;
+
+ lrap->lra_tmpfd = openat(lrap->lra_dirfd, lrap->lra_altname,
+ oflags, mode);
+ if (lrap->lra_tmpfd < 0) {
+ ret = errno;
+ free(lrap->lra_altname);
+ free(lrap->lra_fname);
+ if (close(lrap->lra_dirfd) != 0)
+ abort();
+ free(lrap);
+ return (ret);
+ }
+
+ if (mutex_init(&lrap->lra_lock, USYNC_THREAD, NULL) != 0)
+ abort();
+
+ lrap->lra_state = LIBRENAME_ATOMIC_INITIAL;
+ *outp = lrap;
+ return (0);
+}
+
+int
+librename_atomic_init(const char *dir, const char *file, const char *prefix,
+ int mode, int flags, librename_atomic_t **outp)
+{
+ int fd, ret;
+
+ if ((fd = open(dir, O_RDONLY)) < 0)
+ return (errno);
+
+ ret = librename_atomic_fdinit(fd, file, prefix, mode, flags, outp);
+ if (close(fd) != 0)
+ abort();
+
+ return (ret);
+}
+
+int
+librename_atomic_fd(librename_atomic_t *lrap)
+{
+ return (lrap->lra_tmpfd);
+}
+
+/*
+ * To atomically commit a file, we need to go through and do the following:
+ *
+ * o fsync the source
+ * o run rename
+ * o fsync the source again and the directory.
+ */
+int
+librename_atomic_commit(librename_atomic_t *lrap)
+{
+ int ret = 0;
+
+ if (mutex_lock(&lrap->lra_lock) != 0)
+ abort();
+ if (lrap->lra_state == LIBRENAME_ATOMIC_COMPLETED) {
+ ret = EINVAL;
+ goto out;
+ }
+
+ if (fsync(lrap->lra_tmpfd) != 0) {
+ ret = errno;
+ goto out;
+ }
+ lrap->lra_state = LIBRENAME_ATOMIC_FSYNC;
+
+ if (renameat(lrap->lra_dirfd, lrap->lra_altname, lrap->lra_dirfd,
+ lrap->lra_fname) != 0) {
+ ret = errno;
+ goto out;
+ }
+ lrap->lra_state = LIBRENAME_ATOMIC_RENAME;
+
+ if (fsync(lrap->lra_tmpfd) != 0) {
+ ret = errno;
+ goto out;
+ }
+ lrap->lra_state = LIBRENAME_ATOMIC_POSTSYNC;
+
+ if (fsync(lrap->lra_dirfd) != 0) {
+ ret = errno;
+ goto out;
+ }
+ lrap->lra_state = LIBRENAME_ATOMIC_COMPLETED;
+
+out:
+ if (mutex_unlock(&lrap->lra_lock) != 0)
+ abort();
+ return (ret);
+}
+
+void
+librename_atomic_fini(librename_atomic_t *lrap)
+{
+
+ free(lrap->lra_altname);
+ free(lrap->lra_fname);
+ if (close(lrap->lra_tmpfd) != 0)
+ abort();
+ if (close(lrap->lra_dirfd) != 0)
+ abort();
+ if (mutex_destroy(&lrap->lra_lock) != 0)
+ abort();
+ free(lrap);
+}
diff --git a/usr/src/lib/librename/common/librename.h b/usr/src/lib/librename/common/librename.h
new file mode 100644
index 0000000000..cb344f534c
--- /dev/null
+++ b/usr/src/lib/librename/common/librename.h
@@ -0,0 +1,43 @@
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source. A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ */
+
+/*
+ * Copyright (c) 2014 Joyent, Inc. All rights reserved.
+ */
+
+#ifndef _LIBRENAME_H
+#define _LIBRENAME_H
+
+/*
+ * librename(3RENAME) public interfaces
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct librename_atomic librename_atomic_t;
+
+#define LIBRENAME_ATOMIC_NOUNLINK 0x01
+#define LIBRENAME_ATOMIC_CLOEXEC 0x02
+extern int librename_atomic_init(const char *, const char *, const char *,
+ int, int, librename_atomic_t **);
+extern int librename_atomic_fdinit(int, const char *, const char *, int, int,
+ librename_atomic_t **);
+extern int librename_atomic_fd(librename_atomic_t *);
+extern int librename_atomic_commit(librename_atomic_t *);
+extern void librename_atomic_fini(librename_atomic_t *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LIBRENAME_H */
diff --git a/usr/src/lib/librename/common/llib-lrename b/usr/src/lib/librename/common/llib-lrename
new file mode 100644
index 0000000000..6f1dd81a7b
--- /dev/null
+++ b/usr/src/lib/librename/common/llib-lrename
@@ -0,0 +1,19 @@
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source. A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ */
+
+/*
+ * Copyright (c) 2014 Joyent, Inc. All rights reserved.
+ */
+
+/* LINTLIBRARY */
+/* PROTOLIB1 */
+
+#include <librename.h>
diff --git a/usr/src/lib/librename/common/mapfile-vers b/usr/src/lib/librename/common/mapfile-vers
new file mode 100644
index 0000000000..af98188b42
--- /dev/null
+++ b/usr/src/lib/librename/common/mapfile-vers
@@ -0,0 +1,41 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source. A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright (c) 2014 Joyent, Inc. All rights reserved.
+#
+
+#
+# MAPFILE HEADER START
+#
+# WARNING: STOP NOW. DO NOT MODIFY THIS FILE.
+# Object versioning must comply with the rules detailed in
+#
+# usr/src/lib/README.mapfiles
+#
+# You should not be making modifications here until you've read the most current
+# copy of that file. If you need help, contact a gatekeeper for guidance.
+#
+# MAPFILE HEADER END
+#
+
+$mapfile_version 2
+
+SYMBOL_VERSION ILLUMOSprivate {
+ global:
+ librename_atomic_commit;
+ librename_atomic_fd;
+ librename_atomic_fdinit;
+ librename_atomic_fini;
+ librename_atomic_init;
+ local:
+ *;
+};
diff --git a/usr/src/lib/librename/i386/Makefile b/usr/src/lib/librename/i386/Makefile
new file mode 100644
index 0000000000..41e699e8f8
--- /dev/null
+++ b/usr/src/lib/librename/i386/Makefile
@@ -0,0 +1,18 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source. A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright (c) 2014 Joyent, Inc. All rights reserved.
+#
+
+include ../Makefile.com
+
+install: all $(ROOTLIBS) $(ROOTLINKS) $(ROOTLINT)
diff --git a/usr/src/lib/librename/sparc/Makefile b/usr/src/lib/librename/sparc/Makefile
new file mode 100644
index 0000000000..41e699e8f8
--- /dev/null
+++ b/usr/src/lib/librename/sparc/Makefile
@@ -0,0 +1,18 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source. A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright (c) 2014 Joyent, Inc. All rights reserved.
+#
+
+include ../Makefile.com
+
+install: all $(ROOTLIBS) $(ROOTLINKS) $(ROOTLINT)
diff --git a/usr/src/lib/librename/sparcv9/Makefile b/usr/src/lib/librename/sparcv9/Makefile
new file mode 100644
index 0000000000..15d904c616
--- /dev/null
+++ b/usr/src/lib/librename/sparcv9/Makefile
@@ -0,0 +1,19 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source. A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright (c) 2014 Joyent, Inc. All rights reserved.
+#
+
+include ../Makefile.com
+include ../../Makefile.lib.64
+
+install: all $(ROOTLIBS64) $(ROOTLINKS64) $(ROOTLINT64)
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-28 15:45:25 +0000