minhtrannhat/os161
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Initial Spring 2016 commit.

Browse Source
This commit is contained in:
Geoffrey Challen
2015-12-23 00:50:04 +00:00
commit cafa9f5690
732 changed files with 92195 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
userland/lib/libc/unix/__assert.c Normal file
View File

@@ -0,0 +1,50 @@
/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
* The President and Fellows of Harvard College.
*
* 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. 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 UNIVERSITY 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 UNIVERSITY 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 <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
/*
* Function that gets called when an assert() fails.
* Print a message to stderr and bail out of the program.
*/
void
__bad_assert(const char *file, int line, const char *expr)
{
char buf[256];
snprintf(buf, sizeof(buf), "Assertion failed: %s (%s line %d)\n",
expr, file, line);
write(STDERR_FILENO, buf, strlen(buf));
abort();
}

191
userland/lib/libc/unix/err.c Normal file
View File

@@ -0,0 +1,191 @@
/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
* The President and Fellows of Harvard College.
*
* 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. 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 UNIVERSITY 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 UNIVERSITY 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 <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <err.h>
#include <errno.h>
/*
* 4.4BSD error printing functions.
*/
/*
* This is initialized by crt0, though it actually lives in errno.c
*/
extern char **__argv;
/*
* Routine to print error message text to stderr.
*/
static
void
__senderr(void *junk, const char *data, size_t len)
{
(void)junk; /* not needed or used */
write(STDERR_FILENO, data, len);
}
/*
* Shortcut to call __senderr on a null-terminated string.
* (__senderr is set up to be called by __vprintf.)
*/
static
void
__senderrstr(const char *str)
{
__senderr(NULL, str, strlen(str));
}
/*
* Common routine for all the *err* and *warn* functions.
*/
static
void
__printerr(int use_errno, const char *fmt, va_list ap)
{
const char *errmsg;
const char *prog;
/*
* Get the error message for the current errno.
* Do this early, before doing anything that might change the
* value in errno.
*/
errmsg = strerror(errno);
/*
* Look up the program name.
* Strictly speaking we should pull off the rightmost
* path component of argv[0] and use that as the program
* name (this is how BSD err* prints) but it doesn't make
* much difference.
*/
if (__argv!=NULL && __argv[0]!=NULL) {
prog = __argv[0];
}
else {
prog = "(program name unknown)";
}
/* print the program name */
__senderrstr(prog);
__senderrstr(": ");
/* process the printf format and args */
__vprintf(__senderr, NULL, fmt, ap);
/* if we're using errno, print the error string from above. */
if (use_errno) {
__senderrstr(": ");
__senderrstr(errmsg);
}
/* and always add a newline. */
__senderrstr("\n");
}
/*
* The va_list versions of the warn/err functions.
*/
/* warn/vwarn: use errno, don't exit */
void
vwarn(const char *fmt, va_list ap)
{
__printerr(1, fmt, ap);
}
/* warnx/vwarnx: don't use errno, don't exit */
void
vwarnx(const char *fmt, va_list ap)
{
__printerr(0, fmt, ap);
}
/* err/verr: use errno, then exit */
void
verr(int exitcode, const char *fmt, va_list ap)
{
__printerr(1, fmt, ap);
exit(exitcode);
}
/* errx/verrx: don't use errno, but do then exit */
void
verrx(int exitcode, const char *fmt, va_list ap)
{
__printerr(0, fmt, ap);
exit(exitcode);
}
/*
* The non-va_list versions of the warn/err functions.
* Just hand off to the va_list versions.
*/
void
warn(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vwarn(fmt, ap);
va_end(ap);
}
void
warnx(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vwarnx(fmt, ap);
va_end(ap);
}
void
err(int exitcode, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
verr(exitcode, fmt, ap);
va_end(ap);
}
void
errx(int exitcode, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
verrx(exitcode, fmt, ap);
va_end(ap);
}

45
userland/lib/libc/unix/errno.c Normal file
View File

@@ -0,0 +1,45 @@
/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
* The President and Fellows of Harvard College.
*
* 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. 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 UNIVERSITY 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 UNIVERSITY 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 <errno.h>
/*
* Source file that declares the space for the global variable errno.
*
* We also declare the space for __argv, which is used by the err*
* functions, and __environ, which is used by getenv(). Since these
* are set by crt0, they are always referenced in every program;
* putting them here prevents gratuitously linking all the err* and
* warn* functions (and thus printf) into every program.
*/
char **__argv;
char **__environ;
int errno;

91
userland/lib/libc/unix/execvp.c Normal file
View File

@@ -0,0 +1,91 @@
/*
* Copyright (c) 2013
* The President and Fellows of Harvard College.
*
* 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. 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 UNIVERSITY 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 UNIVERSITY 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <limits.h>
/*
* POSIX C function: exec a program on the search path. Tries
* execv() repeatedly until one of the choices works.
*/
int
execvp(const char *prog, char *const *args)
{
const char *searchpath, *s, *t;
char progpath[PATH_MAX];
size_t len;
if (strchr(prog, '/') != NULL) {
execv(prog, args);
return -1;
}
searchpath = getenv("PATH");
if (searchpath == NULL) {
errno = ENOENT;
return -1;
}
for (s = searchpath; s != NULL; s = t) {
t = strchr(s, ':');
if (t != NULL) {
len = t - s;
/* advance past the colon */
t++;
}
else {
len = strlen(s);
}
if (len == 0) {
continue;
}
if (len >= sizeof(progpath)) {
continue;
}
memcpy(progpath, s, len);
snprintf(progpath + len, sizeof(progpath) - len, "/%s", prog);
execv(progpath, args);
switch (errno) {
case ENOENT:
case ENOTDIR:
case ENOEXEC:
/* routine errors, try next dir */
break;
default:
/* oops, let's fail */
return -1;
}
}
errno = ENOENT;
return -1;
}

56
userland/lib/libc/unix/getcwd.c Normal file
View File

@@ -0,0 +1,56 @@
/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
* The President and Fellows of Harvard College.
*
* 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. 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 UNIVERSITY 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 UNIVERSITY 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 <unistd.h>
#include <errno.h>
/*
* POSIX C function: retrieve current working directory.
* Uses the system call __getcwd(), which does essentially
* all the work.
*/
char *
getcwd(char *buf, size_t buflen)
{
int r;
if (buflen < 1) {
errno = EINVAL;
return NULL;
}
r = __getcwd(buf, buflen-1);
if (r < 0) {
return NULL;
}
buf[r] = 0;
return buf;
}