/*
- * Copyright (c) 2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2008-2009,2011 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
}
if (BeforeExtent(ext, *curIt)) // we are done
break;
- // overlapped extents
+
+ //
+ // If we get here, the input extent and *curIt have at least one block in common.
+ // That is, they overlap in some way. Thus *curIt needs to change, be removed,
+ // or be split into two non-contiguous extents.
+ //
+
if (curIt->blockAddr >= ext.blockAddr &&
curIt->blockAddr + curIt->numBlocks <= ext.blockAddr + ext.numBlocks) {
- // *curIt is totally within ext, remove curIt
+ //
+ // The input extent totally contains *curIt, so remove *curIt.
+ //
curIt = extentList.erase(curIt);
} else if (curIt->blockAddr < ext.blockAddr &&
curIt->blockAddr + curIt->numBlocks > ext.blockAddr + ext.numBlocks) {
- // ext is totally within *curIt, split ext into two
+ //
+ // The input extent does not include the start of *curIt, nor the end of *curIt,
+ // so split *curIt into two extents.
+ //
newExt.blockAddr = ext.blockAddr + ext.numBlocks;
newExt.numBlocks = curIt->blockAddr + curIt->numBlocks - newExt.blockAddr;
curIt->numBlocks = ext.blockAddr - curIt->blockAddr;
curIt++;
extentList.insert(curIt, newExt); // throws bad_alloc when out of memory
curIt++;
- } else { // remove part of ext
- if (curIt->blockAddr >= ext.blockAddr) { // remove the former part of *curIt
- assert(curIt->blockAddr + curIt->numBlocks > newExt.blockAddr);
+ } else {
+ //
+ // The input extent contains either the start or the end of *curIt, but not both.
+ // The remove will leave either the end or the start of *curIt (respectively) and
+ // not change the number of extents in the list.
+ //
+ if (curIt->blockAddr >= ext.blockAddr) {
+ //
+ // Remove the start of *curIt by updating both its starting block and size.
+ //
+ assert(curIt->blockAddr + curIt->numBlocks > ext.blockAddr + ext.numBlocks);
newExt.blockAddr = ext.blockAddr + ext.numBlocks;
newExt.numBlocks = curIt->blockAddr + curIt->numBlocks - newExt.blockAddr;
*curIt = newExt;
- } else { // remove the latter part of *curIt
+ } else {
+ //
+ // Remove the end of *curIt by updating its size.
+ //
curIt->numBlocks = ext.blockAddr - curIt->blockAddr;
}
curIt++;
}
printf("\n");
}
+
+
+#if UNIT_TEST
+
+/*
+clang++ -arch i386 -arch x86_64 -DUNIT_TEST ExtentManager.cpp -o ExtentManager && ./ExtentManager
+*/
+
+#include <cstdio>
+#include <cstdlib>
+
+const char *DebugDescription(class ExtentManager *extMan)
+{
+ char *result = strdup("");
+ char *temp;
+
+ ListExtIt it;
+
+ for (it = extMan->extentList.begin(); it != extMan->extentList.end(); it++) {
+ temp = result;
+ asprintf(&result, "%s[%lld, %lld] ", temp, it->blockAddr, it->numBlocks);
+ free(temp);
+ }
+
+ return result;
+}
+
+int SimpleTestCase(off_t addAddr, off_t addBlocks, off_t removeAddr, off_t removeBlocks, const char *expectedResult)
+{
+ class ExtentManager extMan;
+ const char *actualResult;
+ int result = 0;
+
+ extMan.Init(512, 512, 512*999);
+ extMan.AddBlockRangeExtent(addAddr, addBlocks);
+ extMan.RemoveBlockRangeExtent(removeAddr, removeBlocks);
+ actualResult = DebugDescription(&extMan);
+ if (strcmp(actualResult, expectedResult))
+ {
+ fprintf(stderr,
+ "SimpleTestCase(%lld, %lld, %lld, %lld) failed.\n"
+ " Expected result: %s\n"
+ " Actual result: %s\n",
+ addAddr, addBlocks, removeAddr, removeBlocks,
+ expectedResult, actualResult);
+ result = 1;
+ }
+ free((void *)actualResult);
+
+ return result;
+}
+
+int main(void)
+{
+ int failed = 0;
+ class ExtentManager *extMan;
+
+ // Create an extent, and remove one contained inside,
+ // leaving the start and end of the original extent.
+ // Create: [xxxxxxxxxx]
+ // Remove: [......]
+ failed |= SimpleTestCase(10, 10, 12, 6, "[0, 0] [10, 2] [18, 2] [999, 0] ");
+
+ // Create an extent, and remove the whole extent.
+ // Create: [xxxxxxxxxx]
+ // Remove: [..........]
+ failed |= SimpleTestCase(10, 10, 10, 10, "[0, 0] [999, 0] ");
+
+ // Create an extent, and remove the first part of the extent.
+ // Create: [xxxxxxxxxx]
+ // Remove: [......]
+ failed |= SimpleTestCase(10, 10, 10, 6, "[0, 0] [16, 4] [999, 0] ");
+
+ // Create an extent, and remove the last part of the extent.
+ // Create: [xxxxxxxxxx]
+ // Remove: [......]
+ failed |= SimpleTestCase(10, 10, 14, 6, "[0, 0] [10, 4] [999, 0] ");
+
+ // Create an extent and remove before the start, through the middle.
+ // Create: [xxxxxxxxxx]
+ // Remove: [..........]
+ failed |= SimpleTestCase(10, 10, 6, 10, "[0, 0] [16, 4] [999, 0] ");
+
+ // Create an extent and remove from middle to past the end.
+ // Create: [xxxxxxxxxx]
+ // Remove: [..........]
+ failed |= SimpleTestCase(10, 10, 14, 10, "[0, 0] [10, 4] [999, 0] ");
+
+ // Create an extent and remove from before through past end.
+ // Create: [xxxxxxxxxx]
+ // Remove: [..............]
+ failed |= SimpleTestCase(10, 10, 6, 18, "[0, 0] [999, 0] ");
+
+ // Create an extent and remove purely before the extent.
+ // Create: [xxxxxxxxxx]
+ // Remove: [...]
+ failed |= SimpleTestCase(10, 10, 2, 5, "[0, 0] [10, 10] [999, 0] ");
+
+ // Create an extent and remove purely after the extent.
+ // Create: [xxxxxxxxxx]
+ // Remove: [...]
+ failed |= SimpleTestCase(10, 10, 22, 5, "[0, 0] [10, 10] [999, 0] ");
+
+ if (failed)
+ printf("FAIL!\n");
+ else
+ printf("Success.\n");
+
+ return failed;
+}
+
+#endif /* UNIT_TEST */
+++ /dev/null
-SHELL := /bin/sh
-
-VERSION = 1.0
-CC = xcrun cc
-CPP = xcrun c++
-CPPFLAGS = -I$(SRCROOT)
-
-ifneq ($(SDKROOT),)
-CFLAGS_SDK = -isysroot $(SDKROOT)
-LDFLAGS_SDK = -Wl,-syslibroot,$(SDKROOT)
-endif
-
-CFLAGS = -Os -g3 -no-cpp-precomp -Wall $(RC_CFLAGS) $(CFLAGS_SDK)
-LDFLAGS = $(RC_CFLAGS) -install_name /usr/lib/libutil.dylib -compatibility_version $(VERSION) \
- -current_version $(VERSION) -lstdc++ -exported_symbols_list libutil.exports $(LDFLAGS_SDK)
-INSTALL = install -c
-LN = ln
-MKDIR = mkdir -p
-STRIP = strip
-DSYMUTIL = dsymutil
-AR = ar
-RANLIB = ranlib
-
-SRCROOT = .
-OBJROOT = $(SRCROOT)
-SYMROOT = $(OBJROOT)
-DSTROOT =
-
-LIB := libutil1.0.dylib
-SRCS := _secure_path.c getmntopts.c humanize_number.c \
- pidfile.c property.c realhostname.c trimdomain.c uucplock.c \
- ExtentManager.cpp wipefs.cpp reexec_to_match_kernel.c
-HDRS := libutil.h mntopts.h wipefs.h
-MAN3 := _secure_path.3 getmntopts.3 humanize_number.3 pidfile.3 \
- property.3 realhostname.3 realhostname_sa.3 trimdomain.3 \
- uucplock.3 wipefs.3 reexec_to_match_kernel.3
-
-ifeq ($(RC_ProjectName),libutil_Sim)
- INSTALL_PREFIX = $(SDKROOT)
-else
- INSTALL_PREFIX =
-endif
-
-
-.SUFFIXES :
-.SUFFIXES : .c .cpp .h .o
-
-.PHONY :
-.PHONY : all installsrc installhdrs install clean installlib installman
-
-all : $(SYMROOT)/$(LIB)
-
-#
-# xbs targets.
-#
-installsrc :
- @if test ! -d $(SRCROOT); then \
- echo "$(INSTALL) -d $(SRCROOT)"; \
- $(INSTALL) -d $(SRCROOT); \
- fi
- tar cf - . | (cd $(SRCROOT); tar xpf -)
- @for i in `find $(SRCROOT) | grep "/\.svn$$"`; do \
- if test -d $$i ; then \
- echo "rm -rf $$i"; \
- rm -rf $$i; \
- fi; \
- done
-
-installhdrs :
- $(INSTALL) -d $(DSTROOT)$(INSTALL_PREFIX)/usr/local/include
- $(INSTALL) -m 0644 $(HDRS) $(DSTROOT)$(INSTALL_PREFIX)/usr/local/include
-
-
-ifeq ($(RC_ProjectName),libutil_Sim)
-install : installhdrs installlib strip install-plist
-else
-install : installhdrs installlib strip installman install-plist
-endif
-
-clean :
- rm -f $(patsubst %.cpp,$(OBJROOT)/%.o,$(patsubst %.c,$(OBJROOT)/%.o,$(SRCS)))
- rm -f $(SYMROOT)/*~
- rm -f $(SRCROOT)/.\#*
- rm -f $(SYMROOT)/$(LIB)
-
-strip:
- $(STRIP) -x -S $(DSTROOT)$(INSTALL_PREFIX)/usr/lib/$(LIB)
-
-#
-# Internal targets and rules.
-#
-installlib : $(SYMROOT)/$(LIB)
- $(DSYMUTIL) $(SYMROOT)/$(LIB) -o $(SYMROOT)/$(LIB).dSYM
- $(INSTALL) -d $(DSTROOT)$(INSTALL_PREFIX)/usr/lib
- $(INSTALL) -m 0755 $< $(DSTROOT)$(INSTALL_PREFIX)/usr/lib
- $(LN) -fs libutil1.0.dylib $(DSTROOT)$(INSTALL_PREFIX)/usr/lib/libutil.dylib
-
-installman :
- $(INSTALL) -d $(DSTROOT)/usr/local/share/man/man3
- @for i in $(MAN3); do\
- echo "$(INSTALL) -m 0444 $(SRCROOT)/$$i $(DSTROOT)/usr/local/share/man/man3/"; \
- $(INSTALL) -m 0444 $(SRCROOT)/$$i $(DSTROOT)/usr/local/share/man/man3; \
- done
-
-$(OBJROOT)/%.o : $(SRCROOT)/%.c \
- $(patsubst %.h,$(SRCROOT)/%.h,$(HDRS))
- $(CC) -c $(CPPFLAGS) $(CFLAGS) $< -o $@
-
-$(OBJROOT)/%.o : $(SRCROOT)/%.cpp \
- $(patsubst %.h,$(SRCROOT)/%.h,$(HDRS))
- $(CPP) -c $(CPPFLAGS) $(CFLAGS) $< -o $@
-
-$(SYMROOT)/$(LIB) : $(patsubst %.cpp,$(OBJROOT)/%.o,$(patsubst %.c,$(OBJROOT)/%.o,$(SRCS)))
- $(CC) -dynamiclib $(LDFLAGS) -o $@ $(patsubst %.cpp,$(OBJROOT)/%.o,$(patsubst %.c,$(OBJROOT)/%.o,$(SRCS)))
-
-OSV = $(DSTROOT)$(INSTALL_PREFIX)/usr/local/OpenSourceVersions
-OSL = $(DSTROOT)$(INSTALL_PREFIX)/usr/local/OpenSourceLicenses
-
-install-plist:
- $(MKDIR) $(OSV)
- $(INSTALL) -m 644 $(SRCROOT)/libutil.plist $(OSV)/
- $(MKDIR) $(OSL)
- $(INSTALL) -m 644 $(SRCROOT)/libutil.txt $(OSL)/
+++ /dev/null
-.\" Copyright (c) 1997 David Nugent <davidn@blaze.net.au>
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, is permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice immediately at the beginning of the file, without modification,
-.\" this list of conditions, and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. This work was done expressly for inclusion into FreeBSD. Other use
-.\" is permitted provided this notation is included.
-.\" 4. Absolutely no warranty of function or purpose is made by the author
-.\" David Nugent.
-.\" 5. Modifications may be freely made to this file providing the above
-.\" conditions are met.
-.\"
-.\" $FreeBSD: src/lib/libutil/_secure_path.3,v 1.13 2005/01/20 09:17:07 ru Exp $
-.\"
-.Dd May 2, 1997
-.Os
-.Dt _SECURE_PATH 3
-.Sh NAME
-.Nm _secure_path
-.Nd determine if a file appears to be secure
-.Sh LIBRARY
-.Lb libutil
-.Sh SYNOPSIS
-.In sys/types.h
-.In libutil.h
-.Ft int
-.Fn _secure_path "const char *path" "uid_t uid" "gid_t gid"
-.Sh DESCRIPTION
-This function does some basic security checking on a given path.
-It is intended to be used by processes running with root privileges
-in order to decide whether or not to trust the contents of a given
-file.
-It uses a method often used to detect system compromise.
-.Pp
-A file is considered
-.Sq secure
-if it meets the following conditions:
-.Bl -enum
-.It
-The file exists, and is a regular file (not a symlink, device
-special or named pipe, etc.),
-.It
-Is not world writable.
-.It
-Is owned by the given uid or uid 0, if uid is not -1,
-.It
-Is not group writable or it has group ownership by the given
-gid, if gid is not -1.
-.El
-.Sh RETURN VALUES
-This function returns zero if the file exists and may be
-considered secure, -2 if the file does not exist, and
--1 otherwise to indicate a security failure.
-The
-.Xr syslog 3
-function is used to log any failure of this function, including the
-reason, at LOG_ERR priority.
-.Sh SEE ALSO
-.Xr lstat 2 ,
-.Xr syslog 3
-.Sh HISTORY
-Code from which this function was derived was contributed to the
-.Fx
-project by Berkeley Software Design, Inc.
-.Sh BUGS
-The checks carried out are rudimentary and no attempt is made
-to eliminate race conditions between use of this function and
-access to the file referenced.
+++ /dev/null
-/*-
- * Based on code copyright (c) 1995,1997 by
- * Berkeley Software Design, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, is permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice immediately at the beginning of the file, without modification,
- * this list of conditions, and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. This work was done expressly for inclusion into FreeBSD. Other use
- * is permitted provided this notation is included.
- * 4. Absolutely no warranty of function or purpose is made by the authors.
- * 5. Modifications may be freely made to this file providing the above
- * conditions are met.
- */
-
-#include <sys/cdefs.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <errno.h>
-#include <libutil.h>
-#include <stddef.h>
-#include <syslog.h>
-
-/*
- * Check for common security problems on a given path
- * It must be:
- * 1. A regular file, and exists
- * 2. Owned and writable only by root (or given owner)
- * 3. Group ownership is given group or is non-group writable
- *
- * Returns: -2 if file does not exist,
- * -1 if security test failure
- * 0 otherwise
- */
-
-int
-_secure_path(const char *path, uid_t uid, gid_t gid)
-{
- int r = -1;
- struct stat sb;
- const char *msg = NULL;
-
- if (lstat(path, &sb) < 0) {
- if (errno == ENOENT) /* special case */
- r = -2; /* if it is just missing, skip the log entry */
- else
- msg = "%s: cannot stat %s: %m";
- }
- else if (!S_ISREG(sb.st_mode))
- msg = "%s: %s is not a regular file";
- else if (sb.st_mode & S_IWOTH)
- msg = "%s: %s is world writable";
- else if ((int)uid != -1 && sb.st_uid != uid && sb.st_uid != 0) {
- if (uid == 0)
- msg = "%s: %s is not owned by root";
- else
- msg = "%s: %s is not owned by uid %d";
- } else if ((int)gid != -1 && sb.st_gid != gid && (sb.st_mode & S_IWGRP))
- msg = "%s: %s is group writeable by non-authorised groups";
- else
- r = 0;
- if (msg != NULL)
- syslog(LOG_ERR, msg, "_secure_path", path, uid);
- return r;
-}
-.\" $NetBSD: getmntopts.3,v 1.7 2004/02/24 15:12:51 wiz Exp $
+.\" $NetBSD: getmntopts.3,v 1.12 2010/08/24 12:05:01 christos Exp $
.\"
.\" Copyright (c) 1994
.\" The Regents of the University of California. All rights reserved.
.\"
.\" @(#)getmntopts.3 8.3 (Berkeley) 3/30/95
.\"
-.Dd April 11, 2003
+.Dd May 4, 2010
.Dt GETMNTOPTS 3
.Os
.Sh NAME
The
.Fn getmntopts
function takes a comma separated option list and a list
-of valid option names, and computes the bitmask
+of valid option names, and computes the bitmasks
corresponding to the requested set of options.
.Pp
The string
.Bd -literal
struct mntopt {
const char *m_option; /* option name */
- int m_inverse; /* is this a negative option, e.g., "dev" */
+ int m_inverse; /* negative option, e.g., "dev" */
int m_flag; /* bit to set, e.g., MNT_RDONLY */
- int m_altloc; /* non-zero to use altflagp rather than flagp */
+ int m_altloc; /* use altflagp rather than flagp */
};
.Ed
.Pp
To simplify the program interface and ensure consistency across all
programs, a general purpose macro,
.Dv MOPT_STDOPTS ,
-is defined which contains an entry for all the generic VFS options.
+is defined which contains an entry for all the generic VFS options:
+.Bd -literal -offset indent
+MOPT_USERQUOTA,
+MOPT_GROUPQUOTA,
+MOPT_FSTAB_COMPAT,
+MOPT_NODEV,
+MOPT_NOEXEC,
+MOPT_NOSUID,
+MOPT_RDONLY,
+MOPT_UNION,
+MOPT_BROWSE,
+MOPT_AUTOMOUNTED,
+MOPT_DEFWRITE,
+MOPT_NOATIME,
+MOPT_PERMISSIONS,
+MOPT_IGNORE_OWNERSHIP,
+MOPT_QUARANTINE,
+MOPT_CPROTECT
+.Ed
+.Pp
In addition, the macros
.Dv MOPT_FORCE
and
.Dv NULL
first element.
.Pp
+.Fn getmntopts
+returns a
+.Li "mntoptparse_t"
+handle that can be used in subsequent
+.Fn getmntoptstr
+and
+.Fn getmntoptnum
+calls to fetch a value for an option and that must be freed with a call
+to
+.Fn freemntopts .
+If an error occurred, then if the external integer value
+.Va getmnt_silent
+is zero then
+.Fn getmntopts
+prints an error message and exits;
+if
+.Va getmnt_silent
+is non-zero then
+.Fn getmntopts
+returns
+.Dv NULL .
+.Pp
The
.Fn getmntoptstr
function returns the string value of the named option, if such a value
-was set it the option string.
+was set in the option string.
+If the value was not set, then if the external integer value
+.Va getmnt_silent
+is zero then
+.Fn getmntoptstr
+prints an error message and exits;
+if
+.Va getmnt_silent
+is non-zero then
+.Fn getmntoptstr
+returns
+.Dv NULL .
.Pp
The
.Fn getmntoptnum
-returns the long value of the named option, if such a value was set it the
+returns the long value of the named option, if such a value was set in the
option string.
-It prints an error message and exits if the value was not
-set, or could not be converted from a string to a long.
+If the value was not set, or could not be converted from a string to a
+long, then if the external integer value
+.Va getmnt_silent
+is zero then
+.Fn getmntoptnum
+prints an error message and exits;
+if
+.Va getmnt_silent
+is non-zero then
+.Fn getmntoptnum
+returns \-1.
.Pp
The
.Fn freemntopts
frees the storage used by
.Fn getmntopts .
+.Sh RETURN VALUES
+.Fn getmntopts
+returns
+.Dv NULL
+if an error occurred.
+Note that some bits may already have been set in
+.Va flagp
+and
+.Va altflagp
+even if
+.Dv NULL
+is returned.
+.Fn getmntoptstr
+returns
+.Dv NULL
+if an error occurred.
+.Fn getmntoptnum
+returns \-1 if an error occurred.
.Sh EXAMPLES
Most commands will use the standard option set.
Local filesystems which support the
.Dv MOPT_UPDATE
entry.
This can be declared and used as follows:
-.Bd -literal
+.Bd -literal -offset indent
#include \*[Lt]mntopts.h\*[Gt]
static const struct mntopt mopts[] = {
{ NULL }
};
-...
+\&...
+
long val;
-mntflags = mntaltflags = 0;
mntoptparse_t mp;
-...
-if ((mp = getmntopts(options, mopts, \*[Am]mntflags, \*[Am]mntaltflags)) == NULL)
- err(1, NULL);
-...
+mntflags = mntaltflags = 0;
+
+\&...
+
+mp = getmntopts(options, mopts, \*[Am]mntflags, \*[Am]mntaltflags);
+
+if (mp == NULL)
+ err(EXIT_FAILURE, "getmntopts");
+
+\&...
+
val = getmntoptnum(mp, "rsize");
freemntopts(mp);
.Ed
-.Sh RETURN VALUE
-.Fn getmntopts
-returns
-.Dv NULL
-if an error occurred.
-.Fn getmntoptstr
-returns
-.Dv NULL
-if the option does not have an argument, or the option string.
-.Fn getmntoptnum
-returns \-1 if an error occurred and
-.Va getmnt_silent
-is set.
.Sh DIAGNOSTICS
If the external integer variable
.Va getmnt_silent
-is non-zero then the
-.Fn getmntopts
-function displays an error message and exits if an
-unrecognized option is encountered.
+is zero then the
+.Fn getmntopts ,
+.Fn getmntoptstr ,
+and
+.Fn getmntoptnum
+functions display an error message and exit if an error occurred.
By default
.Va getmnt_silent
is zero.
-__secure_path
_freemntopts
_getmnt_silent
_getmntoptnum
_pidfile_open
_pidfile_remove
_pidfile_write
-_properties_free
-_properties_read
-_property_find
_realhostname
_realhostname_sa
_reexec_to_match_kernel
_reexec_to_match_lp64ness
-_trimdomain
-_uu_lock
-_uu_lock_txfr
-_uu_lockerr
-_uu_unlock
_wipefs_alloc
_wipefs_except_blocks
_wipefs_free
+_wipefs_include_blocks
_wipefs_wipe
#include <unistd.h>
#include <stdbool.h>
-#define PROPERTY_MAX_NAME 64
-#define PROPERTY_MAX_VALUE 512
-
-/* for properties.c */
-typedef struct _property {
- struct _property *next;
- char *name;
- char *value;
-} *properties;
-
#ifdef _SYS_PARAM_H_
/* for pidfile.c */
struct pidfh {
};
#endif
-/* Avoid pulling in all the include files for no need */
-struct termios;
-struct winsize;
-struct utmp;
struct in_addr;
+struct sockaddr;
__BEGIN_DECLS
-void clean_environment(const char * const *_white,
- const char * const *_more_white);
-int extattr_namespace_to_string(int _attrnamespace, char **_string);
-int extattr_string_to_namespace(const char *_string, int *_attrnamespace);
-void login(struct utmp *_ut);
-int login_tty(int _fd);
-int logout(const char *_line);
-void logwtmp(const char *_line, const char *_name, const char *_host);
-void trimdomain(char *_fullhost, int _hostsize);
-int openpty(int *_amaster, int *_aslave, char *_name,
- struct termios *_termp, struct winsize *_winp);
-int forkpty(int *_amaster, char *_name,
- struct termios *_termp, struct winsize *_winp);
int humanize_number(char *_buf, size_t _len, int64_t _number,
const char *_suffix, int _scale, int _flags);
-const char *uu_lockerr(int _uu_lockresult);
-int uu_lock(const char *_ttyname);
-int uu_unlock(const char *_ttyname);
-int uu_lock_txfr(const char *_ttyname, pid_t _pid);
-int _secure_path(const char *_path, uid_t _uid, gid_t _gid);
-properties properties_read(int fd);
-void properties_free(properties list);
-char *property_find(properties list, const char *name);
-char *auth_getval(const char *name);
+
int realhostname(char *host, size_t hsize, const struct in_addr *ip);
-struct sockaddr;
int realhostname_sa(char *host, size_t hsize, struct sockaddr *addr,
int addrlen);
-#ifdef _STDIO_H_ /* avoid adding new includes */
-char *fparseln(FILE *, size_t *, size_t *, const char[3], int);
-#endif
-
-#ifdef _PWD_H_
-int pw_copy(int _ffd, int _tfd, const struct passwd *_pw, struct passwd *_old_pw);
-struct passwd *pw_dup(const struct passwd *_pw);
-int pw_edit(int _notsetuid);
-int pw_equal(const struct passwd *_pw1, const struct passwd *_pw2);
-void pw_fini(void);
-int pw_init(const char *_dir, const char *_master);
-char *pw_make(const struct passwd *_pw);
-int pw_mkdb(const char *_user);
-int pw_lock(void);
-struct passwd *pw_scan(const char *_line, int _flags);
-const char *pw_tempname(void);
-int pw_tmp(int _mfd);
-#endif
-
#ifdef _SYS_PARAM_H_
struct pidfh *pidfile_open(const char *path, mode_t mode, pid_t *pidptr);
int pidfile_write(struct pidfh *pfh);
__END_DECLS
-#define UU_LOCK_INUSE (1)
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-#define UU_LOCK_WRITE_ERR (-4)
-#define UU_LOCK_LINK_ERR (-5)
-#define UU_LOCK_TRY_ERR (-6)
-#define UU_LOCK_OWNER_ERR (-7)
-
/* return values from realhostname() */
#define HOSTNAME_FOUND (0)
#define HOSTNAME_INCORRECTNAME (1)
#define HOSTNAME_INVALIDADDR (2)
#define HOSTNAME_INVALIDNAME (3)
-/* fparseln(3) */
-#define FPARSELN_UNESCESC 0x01
-#define FPARSELN_UNESCCONT 0x02
-#define FPARSELN_UNESCCOMM 0x04
-#define FPARSELN_UNESCREST 0x08
-#define FPARSELN_UNESCALL 0x0f
-
-/* pw_scan() */
-#define PWSCAN_MASTER 0x01
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-
/* humanize_number(3) */
#define HN_DECIMAL 0x01
#define HN_NOSPACE 0x02
<plist version="1.0">
<array>
<dict>
- <key>OpenSourceCVS</key>
+ <key>OpenSourceSCM</key>
<string>cvs -d freebsdanoncvs@anoncvs.FreeBSD.org:/home/ncvs co libutil</string>
<key>OpenSourceImportDate</key>
<string>2006-05-20</string>
<string>libutil</string>
<key>OpenSourceVersion</key>
<string>2005-02-13</string>
- <key>OpenSourceWebsiteURL</key>
- <string>http://www.freebsd.org/cgi/cvsweb.cgi/src/lib/libutil/</string>
</dict>
<dict>
<key>OpenSourceImportDate</key>
<string>libutil</string>
<key>OpenSourceVersion</key>
<string>1.3</string>
- <key>OpenSourceWebsiteURL</key>
+ <key>OpenSourceURL</key>
<string>http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/lib/libutil/getmntopts.c?rev=1.3</string>
</dict>
</array>
--- /dev/null
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+}
--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+ version = "1.0">
+ <FileRef
+ location = "self:libutil.xcodeproj">
+ </FileRef>
+</Workspace>
+++ /dev/null
-.\"
-.\" Copyright (c) 1998 Jordan Hubbard
-.\"
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
-.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
-.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-.\"
-.\" $FreeBSD: src/lib/libutil/property.3,v 1.18 2005/01/20 09:17:07 ru Exp $
-.\" "
-.Dd October 7, 1998
-.Os
-.Dt PROPERTIES 3
-.Sh NAME
-.Nm properties_read ,
-.Nm propery_find ,
-.Nm properties_free
-.Nd "functions to allow creating simple property lists from ASCII file data"
-.Sh LIBRARY
-.Lb libutil
-.Sh SYNOPSIS
-.In sys/types.h
-.In libutil.h
-.Ft properties
-.Fn properties_read "int fd"
-.Ft char *
-.Fn property_find "properties list" "const char *name"
-.Ft void
-.Fn properties_free "properties list"
-.Sh DESCRIPTION
-.Bd -literal
-typedef struct _properties {
- struct _properties *next;
- char *name;
- char *value;
-} *properties;
-.Ed
-.Pp
-The function
-.Fn properties_read
-reads
-.Fa name = value
-pairs from the file descriptor passed in
-.Fa fd
-and returns the head of a new property list, assuming that the
-file's contents have been parsed properly, or NULL in case
-of error.
-.Pp
-The
-.Fn property_find
-function returns the associated value string for the property named
-.Fa name
-if found, otherwise NULL.
-The value returned may be up to
-.Dv PROPERTY_MAX_VALUE
-bytes in length.
-.Pp
-The
-.Fn properties_free
-function is used to free the structure returned by
-.Fn properties_read
-when it is no longer needed.
-.Sh FILE FORMAT
-Each property in the file is assumed to have the format of
-.Fa name = value
-where
-.Fa name
-is an alphanumeric string (and any punctuation not including the `=' character)
-and
-.Fa value
-is an arbitary string of text terminated by a newline character.
-If newlines
-are desired, the entire value should be enclosed in { } (curly-bracket)
-characters.
-Any line beginning with a # or ; character is assumed to
-be a comment and will be ignored.
-.Sh SEE ALSO
-.Xr auth_getval 3
-.Sh AUTHORS
-.An Jordan Hubbard
-.Sh BUGS
-Simplistic.
+++ /dev/null
-/*
- *
- * Simple property list handling code.
- *
- * Copyright (c) 1998
- * Jordan "Perky" Hubbard. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer,
- * verbatim and that no modifications are made prior to this
- * point in the file.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR HIS PETS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#include <sys/types.h>
-#include <ctype.h>
-#include <err.h>
-#include <libutil.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-static properties
-property_alloc(char *name, char *value)
-{
- properties n;
-
- if ((n = (properties)malloc(sizeof(struct _property))) == NULL)
- return (NULL);
- n->next = NULL;
- if (name != NULL) {
- if ((n->name = strdup(name)) == NULL) {
- free(n);
- return (NULL);
- }
- } else
- n->name = NULL;
- if (value != NULL) {
- if ((n->value = strdup(value)) == NULL) {
- free(n->name);
- free(n);
- return (NULL);
- }
- } else
- n->value = NULL;
- return (n);
-}
-
-properties
-properties_read(int fd)
-{
- properties head, ptr;
- char hold_n[PROPERTY_MAX_NAME + 1];
- char hold_v[PROPERTY_MAX_VALUE + 1];
- char buf[BUFSIZ * 4];
- int bp, n, v, max;
- enum { LOOK, COMMENT, NAME, VALUE, MVALUE, COMMIT, FILL, STOP } state, last_state;
- int ch = 0, blevel = 0;
-
- n = v = bp = max = 0;
- head = ptr = NULL;
- state = last_state = LOOK;
- while (state != STOP) {
- if (state != COMMIT) {
- if (bp == max) {
- last_state = state;
- state = FILL;
- } else
- ch = buf[bp++];
- }
- switch(state) {
- case FILL:
- if ((max = read(fd, buf, sizeof buf)) < 0) {
- properties_free(head);
- return (NULL);
- }
- if (max == 0) {
- state = STOP;
- } else {
- /*
- * Restore the state from before the fill (which will be
- * initialised to LOOK for the first FILL). This ensures that
- * if we were part-way through eg., a VALUE state, when the
- * buffer ran out, that the previous operation will be allowed
- * to complete.
- */
- state = last_state;
- ch = buf[0];
- bp = 0;
- }
- continue;
-
- case LOOK:
- if (isspace((unsigned char)ch))
- continue;
- /* Allow shell or lisp style comments */
- else if (ch == '#' || ch == ';') {
- state = COMMENT;
- continue;
- }
- else if (isalnum((unsigned char)ch) || ch == '_') {
- if (n >= PROPERTY_MAX_NAME) {
- n = 0;
- state = COMMENT;
- }
- else {
- hold_n[n++] = ch;
- state = NAME;
- }
- }
- else
- state = COMMENT; /* Ignore the rest of the line */
- break;
-
- case COMMENT:
- if (ch == '\n')
- state = LOOK;
- break;
-
- case NAME:
- if (ch == '\n' || !ch) {
- hold_n[n] = '\0';
- hold_v[0] = '\0';
- v = n = 0;
- state = COMMIT;
- }
- else if (isspace((unsigned char)ch))
- continue;
- else if (ch == '=') {
- hold_n[n] = '\0';
- v = n = 0;
- state = VALUE;
- }
- else
- hold_n[n++] = ch;
- break;
-
- case VALUE:
- if (v == 0 && ch == '\n') {
- hold_v[v] = '\0';
- v = n = 0;
- state = COMMIT;
- }
- else if (v == 0 && isspace((unsigned char)ch))
- continue;
- else if (ch == '{') {
- state = MVALUE;
- ++blevel;
- }
- else if (ch == '\n' || !ch) {
- hold_v[v] = '\0';
- v = n = 0;
- state = COMMIT;
- }
- else {
- if (v >= PROPERTY_MAX_VALUE) {
- state = COMMENT;
- v = n = 0;
- break;
- }
- else
- hold_v[v++] = ch;
- }
- break;
-
- case MVALUE:
- /* multiline value */
- if (v >= PROPERTY_MAX_VALUE) {
- warn("properties_read: value exceeds max length");
- state = COMMENT;
- n = v = 0;
- }
- else if (ch == '}' && !--blevel) {
- hold_v[v] = '\0';
- v = n = 0;
- state = COMMIT;
- }
- else {
- hold_v[v++] = ch;
- if (ch == '{')
- ++blevel;
- }
- break;
-
- case COMMIT:
- if (head == NULL) {
- if ((head = ptr = property_alloc(hold_n, hold_v)) == NULL)
- return (NULL);
- } else {
- if ((ptr->next = property_alloc(hold_n, hold_v)) == NULL) {
- properties_free(head);
- return (NULL);
- }
- ptr = ptr->next;
- }
- state = LOOK;
- v = n = 0;
- break;
-
- case STOP:
- /* we don't handle this here, but this prevents warnings */
- break;
- }
- }
- if (head == NULL && (head = property_alloc(NULL, NULL)) == NULL)
- return (NULL);
-
- return (head);
-}
-
-char *
-property_find(properties list, const char *name)
-{
- if (list == NULL || name == NULL || !name[0])
- return (NULL);
- while (list != NULL) {
- if (list->name != NULL && strcmp(list->name, name) == 0)
- return (list->value);
- list = list->next;
- }
- return (NULL);
-}
-
-void
-properties_free(properties list)
-{
- properties tmp;
-
- while (list) {
- tmp = list->next;
- if (list->name)
- free(list->name);
- if (list->value)
- free(list->value);
- free(list);
- list = tmp;
- }
-}
u_short si_port;
};
+void trimdomain(char *_fullhost, size_t _hostsize);
+
int
realhostname(char *host, size_t hsize, const struct in_addr *ip)
{
#include <string.h>
#include <unistd.h>
+void trimdomain(char *_fullhost, size_t _hostsize);
+
static int isDISP(const char *);
/*-
* trimdomain("abcde.my.domain:0.0", 8) -> "abcde.my.domain:0.0"
*/
void
-trimdomain(char *fullhost, int hostsize)
+trimdomain(char *fullhost, size_t hostsize)
{
static size_t dlen;
static int first = 1;
return;
s = fullhost;
- end = s + hostsize + 1;
+ end = (char *)((uintptr_t)s + hostsize + 1);
if ((s = memchr(s, '.', (size_t)(end - s))) != NULL) {
if (strncasecmp(s + 1, domain, dlen) == 0) {
if (s[dlen + 1] == '\0') {
+++ /dev/null
-.\"
-.\" Copyright (c) 1996 Brian Somers <brian@awfulhak.demon.co.uk>
-.\"
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
-.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
-.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-.\"
-.\" $FreeBSD: src/lib/libutil/uucplock.3,v 1.19 2005/02/13 22:25:14 ru Exp $
-.\" "
-.Dd March 30, 1997
-.Os
-.Dt UUCPLOCK 3
-.Sh NAME
-.Nm uu_lock ,
-.Nm uu_unlock ,
-.Nm uu_lockerr
-.Nd acquire and release control of a serial device
-.Sh LIBRARY
-.Lb libutil
-.Sh SYNOPSIS
-.In sys/types.h
-.In libutil.h
-.Ft int
-.Fn uu_lock "const char *ttyname"
-.Ft int
-.Fn uu_lock_txfr "const char *ttyname" "pid_t pid"
-.Ft int
-.Fn uu_unlock "const char *ttyname"
-.Ft const char *
-.Fn uu_lockerr "int uu_lockresult"
-.Sh DESCRIPTION
-The
-.Fn uu_lock
-function attempts to create a lock file called
-.Pa /var/spool/lock/LCK..
-with a suffix given by the passed
-.Fa ttyname .
-If the file already exists, it is expected to contain the process
-id of the locking program.
-.Pp
-If the file does not already exist, or the owning process given by
-the process id found in the lock file is no longer running,
-.Fn uu_lock
-will write its own process id into the file and return success.
-.Pp
-.Fn uu_lock_txfr
-transfers lock ownership to another process.
-.Fn uu_lock
-must have previously been successful.
-.Pp
-.Fn uu_unlock
-removes the lockfile created by
-.Fn uu_lock
-for the given
-.Fa ttyname .
-Care should be taken that
-.Fn uu_lock
-was successful before calling
-.Fn uu_unlock .
-.Pp
-.Fn uu_lockerr
-returns an error string representing the error
-.Fa uu_lockresult ,
-as returned from
-.Fn uu_lock .
-.Sh RETURN VALUES
-.Fn uu_unlock
-returns 0 on success and -1 on failure.
-.Pp
-.Fn uu_lock
-may return any of the following values:
-.Pp
-.Dv UU_LOCK_INUSE :
-The lock is in use by another process.
-.Pp
-.Dv UU_LOCK_OK :
-The lock was successfully created.
-.Pp
-.Dv UU_LOCK_OPEN_ERR :
-The lock file could not be opened via
-.Xr open 2 .
-.Pp
-.Dv UU_LOCK_READ_ERR :
-The lock file could not be read via
-.Xr read 2 .
-.Pp
-.Dv UU_LOCK_CREAT_ERR :
-Cannot create temporary lock file via
-.Xr creat 2 .
-.Pp
-.Dv UU_LOCK_WRITE_ERR :
-The current process id could not be written to the lock file via a call to
-.Xr write 2 .
-.Pp
-.Dv UU_LOCK_LINK_ERR :
-Cannot link temporary lock file via
-.Xr link 2 .
-.Pp
-.Dv UU_LOCK_TRY_ERR :
-Locking attempts are failed after 5 tries.
-.Pp
-If a value of
-.Dv UU_LOCK_OK
-is passed to
-.Fn uu_lockerr ,
-an empty string is returned.
-Otherwise, a string specifying
-the reason for failure is returned.
-.Fn uu_lockerr
-uses the current value of
-.Va errno
-to determine the exact error.
-Care should be made not to allow
-.Va errno
-to be changed between calls to
-.Fn uu_lock
-and
-.Fn uu_lockerr .
-.Pp
-.Fn uu_lock_txfr
-may return any of the following values:
-.Pp
-.Dv UU_LOCK_OK :
-The transfer was successful.
-The specified process now holds the device
-lock.
-.Pp
-.Dv UU_LOCK_OWNER_ERR :
-The current process does not already own a lock on the specified device.
-.Pp
-.Dv UU_LOCK_WRITE_ERR :
-The new process id could not be written to the lock file via a call to
-.Xr write 2 .
-.Sh ERRORS
-If
-.Fn uu_lock
-returns one of the error values above, the global value
-.Va errno
-can be used to determine the cause.
-Refer to the respective manual pages
-for further details.
-.Pp
-.Fn uu_unlock
-will set the global variable
-.Va errno
-to reflect the reason that the lock file could not be removed.
-Refer to the description of
-.Xr unlink 2
-for further details.
-.Sh SEE ALSO
-.Xr lseek 2 ,
-.Xr open 2 ,
-.Xr read 2 ,
-.Xr write 2
-.Sh BUGS
-It is possible that a stale lock is not recognised as such if a new
-processes is assigned the same processes id as the program that left
-the stale lock.
-.Pp
-The calling process must have write permissions to the
-.Pa /var/spool/lock
-directory.
-There is no mechanism in place to ensure that the
-permissions of this directory are the same as those of the
-serial devices that might be locked.
+++ /dev/null
-/*
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-
-#ifndef lint
-static const char sccsid[] = "@(#)uucplock.c 8.1 (Berkeley) 6/6/93";
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/file.h>
-#include <dirent.h>
-#include <errno.h>
-#include <paths.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "libutil.h"
-
-#define MAXTRIES 5
-
-#define LOCKTMP "LCKTMP..%d"
-#define LOCKFMT "LCK..%s"
-
-#define GORET(level, val) { err = errno; uuerr = (val); \
- goto __CONCAT(ret, level); }
-
-/* Forward declarations */
-static int put_pid (int fd, pid_t pid);
-static pid_t get_pid (int fd,int *err);
-
-/*
- * uucp style locking routines
- */
-
-int
-uu_lock(const char *tty_name)
-{
- int fd, tmpfd, i;
- pid_t pid, pid_old;
- char lckname[sizeof(_PATH_UUCPLOCK) + MAXNAMLEN],
- lcktmpname[sizeof(_PATH_UUCPLOCK) + MAXNAMLEN];
- int err, uuerr;
-
- pid = getpid();
- (void)snprintf(lcktmpname, sizeof(lcktmpname), _PATH_UUCPLOCK LOCKTMP,
- pid);
- (void)snprintf(lckname, sizeof(lckname), _PATH_UUCPLOCK LOCKFMT,
- tty_name);
- if ((tmpfd = creat(lcktmpname, 0664)) < 0)
- GORET(0, UU_LOCK_CREAT_ERR);
-
- for (i = 0; i < MAXTRIES; i++) {
- if (link (lcktmpname, lckname) < 0) {
- if (errno != EEXIST)
- GORET(1, UU_LOCK_LINK_ERR);
- /*
- * file is already locked
- * check to see if the process holding the lock
- * still exists
- */
- if ((fd = open(lckname, O_RDONLY)) < 0)
- GORET(1, UU_LOCK_OPEN_ERR);
-
- if ((pid_old = get_pid (fd, &err)) == -1)
- GORET(2, UU_LOCK_READ_ERR);
-
- close(fd);
-
- if (kill(pid_old, 0) == 0 || errno != ESRCH)
- GORET(1, UU_LOCK_INUSE);
- /*
- * The process that locked the file isn't running, so
- * we'll lock it ourselves
- */
- (void)unlink(lckname);
- } else {
- if (!put_pid (tmpfd, pid))
- GORET(3, UU_LOCK_WRITE_ERR);
- break;
- }
- }
- GORET(1, (i >= MAXTRIES) ? UU_LOCK_TRY_ERR : UU_LOCK_OK);
-
-ret3:
- (void)unlink(lckname);
- goto ret1;
-ret2:
- (void)close(fd);
-ret1:
- (void)close(tmpfd);
- (void)unlink(lcktmpname);
-ret0:
- errno = err;
- return uuerr;
-}
-
-int
-uu_lock_txfr(const char *tty_name, pid_t pid)
-{
- int fd, err;
- char lckname[sizeof(_PATH_UUCPLOCK) + MAXNAMLEN];
-
- snprintf(lckname, sizeof(lckname), _PATH_UUCPLOCK LOCKFMT, tty_name);
-
- if ((fd = open(lckname, O_RDWR)) < 0)
- return UU_LOCK_OWNER_ERR;
- if (get_pid(fd, &err) != getpid())
- err = UU_LOCK_OWNER_ERR;
- else {
- lseek(fd, (off_t)0, SEEK_SET);
- err = put_pid(fd, pid) ? 0 : UU_LOCK_WRITE_ERR;
- }
- close(fd);
-
- return err;
-}
-
-int
-uu_unlock(const char *tty_name)
-{
- char tbuf[sizeof(_PATH_UUCPLOCK) + MAXNAMLEN];
-
- (void)snprintf(tbuf, sizeof(tbuf), _PATH_UUCPLOCK LOCKFMT, tty_name);
- return unlink(tbuf);
-}
-
-const char *
-uu_lockerr(int uu_lockresult)
-{
- static char errbuf[128];
- const char *fmt;
-
- switch (uu_lockresult) {
- case UU_LOCK_INUSE:
- return "device in use";
- case UU_LOCK_OK:
- return "";
- case UU_LOCK_OPEN_ERR:
- fmt = "open error: %s";
- break;
- case UU_LOCK_READ_ERR:
- fmt = "read error: %s";
- break;
- case UU_LOCK_CREAT_ERR:
- fmt = "creat error: %s";
- break;
- case UU_LOCK_WRITE_ERR:
- fmt = "write error: %s";
- break;
- case UU_LOCK_LINK_ERR:
- fmt = "link error: %s";
- break;
- case UU_LOCK_TRY_ERR:
- fmt = "too many tries: %s";
- break;
- case UU_LOCK_OWNER_ERR:
- fmt = "not locking process: %s";
- break;
- default:
- fmt = "undefined error: %s";
- break;
- }
-
- (void)snprintf(errbuf, sizeof(errbuf), fmt, strerror(errno));
- return errbuf;
-}
-
-static int
-put_pid(int fd, pid_t pid)
-{
- char buf[32];
- int len;
-
- len = sprintf (buf, "%10d\n", (int)pid);
- return write (fd, buf, (size_t)len) == len;
-}
-
-static pid_t
-get_pid(int fd, int *err)
-{
- int bytes_read;
- char buf[32];
- pid_t pid;
-
- bytes_read = read (fd, buf, sizeof (buf) - 1);
- if (bytes_read > 0) {
- buf[bytes_read] = '\0';
- pid = (pid_t)strtol (buf, (char **) NULL, 10);
- } else {
- pid = -1;
- *err = bytes_read ? errno : EINVAL;
- }
- return pid;
-}
-
-/* end of uucplock.c */
.\"\r
-.\" Copyright (c) 2008 Apple Inc. All rights reserved.\r
+.\" Copyright (c) 2008,2011 Apple Inc. All rights reserved.\r
.\"\r
.\" @APPLE_LICENSE_HEADER_START@\r
.\" \r
.\" \r
.\" @APPLE_LICENSE_HEADER_END@\r
.\"\r
-.Dd 2/25/08 \" DATE \r
+.Dd 6/30/11 \" DATE \r
.Dt libutil 3 \" Program name and manual section number \r
.Os Mac OS X\r
.Sh NAME \" Section Header - required - don't modify \r
.In wipefs.h\r
.Ft int\r
.Fo wipefs_alloc\r
-.Fa "int file_desc"\r
+.Fa "int fd"\r
.Fa "size_t block_size"\r
-.Fa "wipefs_ctx *handlep"\r
+.Fa "wipefs_ctx *handle"\r
+.Fc\r
+.Ft int\r
+.Fo wipefs_include_blocks\r
+.Fa "wipefs_ctx handle"\r
+.Fa "off_t block_offset"\r
+.Fa "off_t nblocks"\r
.Fc\r
.Ft int\r
.Fo wipefs_except_blocks\r
.Fa "wipefs_ctx handle"\r
-.Fa "off_t blockoff"\r
+.Fa "off_t block_offset"\r
.Fa "off_t nblocks"\r
.Fc\r
.Ft int\r
.Fc\r
.Ft void\r
.Fo wipefs_free\r
-.Fa "wipefs_ctx *handlep"\r
+.Fa "wipefs_ctx *handle"\r
.Fc\r
.Sh DESCRIPTION \" Section Header - required - don't modify\r
-The wipefs family of functions wipe existing file systems on a volume. This is usually used by the newfs_* utilities before they create new file systems on the volume, so that the existing file system will not be mounted accidentally after the new file system is created.\r
+The wipefs family of functions wipe existing file systems on a volume. A\r
+.Li DKIOCUNMAP\r
+ioctl is sent to the device to invalidate all of its content.\r
+Then zeroes are written to various locations that are used by various file systems to recognize their content and mount their volumes.\r
+This is usually used by the newfs_* utilities before they create new file systems on the volume, so that the existing file system will not be mounted accidentally after the new file system is created.\r
+.Pp\r
+.Sy NOTE:\r
+These routines do not overwrite all volume structures.\r
+These routines do not securely erase the previous content.\r
+They only overwrite enough to make sure that the normal utilities will no longer recognize any file system content.\r
+It is possible that previous file system content could be recovered by other means.\r
.Pp\r
The\r
.Fn wipefs_alloc\r
is a regular file. This function does not write any data to the volume.\r
.Pp\r
The\r
+.Fn wipefs_include_blocks\r
+function tells wipefs to write zeroes in the block range provided, in addition to any other ranges\r
+it would normally write. This may be more efficient than if the caller were to write this range\r
+separately, especially if the block range overlaps or is contiguous with other ranges that wipefs\r
+will write. This function does not write any data to the volume. If this function is called\r
+multiple times, the union of all the ranges provided will be written by\r
+.Fn wipefs_wipe .\r
+.Pp\r
+The\r
.Fn wipefs_except_blocks\r
function tells wipefs not to write anything in the block range provided. This function is used for performance\r
optimizations if the caller will write to these blocks. It is the caller's responsibility to write to these blocks.\r
.Pp\r
The\r
.Fn wipefs_wipe\r
-function writes data to the volume to wipe out existing file systems on it.\r
-.Cm Caution:\r
+function sends a\r
+.Li DKIOCUNMAP\r
+ioctl and then writes data to the volume to wipe out existing file systems on it.\r
+.Sy CAUTION:\r
this function destroys any file system or partition scheme on the volume represented by\r
.Fa file_desc .\r
If\r
.Sh RETURN VALUES\r
The\r
.Fn wipefs_alloc ,\r
+.Fn wipefs_include_blocks ,\r
.Fn wipefs_except_blocks\r
and\r
.Fn wipefs_wipe\r
//
#include <fcntl.h>
+#include <unistd.h>
#include <sys/uio.h>
#include <sys/ioctl.h>
#include <sys/disk.h>
return err;
} // wipefs_alloc
+extern "C" int
+wipefs_include_blocks(wipefs_ctx handle, off_t block_offset, off_t nblocks)
+{
+ int err = 0;
+ try {
+ handle->extMan.AddBlockRangeExtent(block_offset, nblocks);
+ }
+ catch (bad_alloc &e) {
+ err = ENOMEM;
+ }
+ catch (...) { // currently only ENOMEM is possible
+ err = ENOMEM;
+ }
+ return err;
+}
+
extern "C" int
wipefs_except_blocks(wipefs_ctx handle, off_t block_offset, off_t nblocks)
{
ioctl(handle->fd, DKIOCUNMAP, (caddr_t)&unmap);
- bufSize = 256 * 1024; // issue large I/O to get better performance
+ bufSize = 128 * 1024; // issue large I/O to get better performance
bufZero = new uint8_t[bufSize];
bzero(bufZero, bufSize);
__BEGIN_DECLS
extern int wipefs_alloc(int fd, size_t block_size, wipefs_ctx *handle);
+extern int wipefs_include_blocks(wipefs_ctx handle, off_t block_offset, off_t nblocks);
extern int wipefs_except_blocks(wipefs_ctx handle, off_t block_offset, off_t nblocks);
extern int wipefs_wipe(wipefs_ctx handle);
extern void wipefs_free(wipefs_ctx *handle);
projects / apple / libutil.git / commitdiff
