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-rw-r--r--lib/replace/replace.c1145
1 files changed, 1145 insertions, 0 deletions
diff --git a/lib/replace/replace.c b/lib/replace/replace.c
new file mode 100644
index 0000000..68829f2
--- /dev/null
+++ b/lib/replace/replace.c
@@ -0,0 +1,1145 @@
+/*
+ Unix SMB/CIFS implementation.
+ replacement routines for broken systems
+ Copyright (C) Andrew Tridgell 1992-1998
+ Copyright (C) Jelmer Vernooij 2005-2008
+ Copyright (C) Matthieu Patou 2010
+
+ ** NOTE! The following LGPL license applies to the replace
+ ** library. This does NOT imply that all of Samba is released
+ ** under the LGPL
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 3 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+
+#include "system/filesys.h"
+#include "system/time.h"
+#include "system/network.h"
+#include "system/passwd.h"
+#include "system/syslog.h"
+#include "system/locale.h"
+#include "system/wait.h"
+
+#ifdef HAVE_SYS_SYSCALL_H
+#include <sys/syscall.h>
+#endif
+
+#ifdef _WIN32
+#define mkdir(d,m) _mkdir(d)
+#endif
+
+void replace_dummy(void);
+void replace_dummy(void) {}
+
+#ifndef HAVE_FTRUNCATE
+ /*******************************************************************
+ftruncate for operating systems that don't have it
+********************************************************************/
+int rep_ftruncate(int f, off_t l)
+{
+#ifdef HAVE_CHSIZE
+ return chsize(f,l);
+#elif defined(F_FREESP)
+ struct flock fl;
+
+ fl.l_whence = 0;
+ fl.l_len = 0;
+ fl.l_start = l;
+ fl.l_type = F_WRLCK;
+ return fcntl(f, F_FREESP, &fl);
+#else
+#error "you must have a ftruncate function"
+#endif
+}
+#endif /* HAVE_FTRUNCATE */
+
+
+#ifndef HAVE_STRLCPY
+/*
+ * Like strncpy but does not 0 fill the buffer and always null
+ * terminates. bufsize is the size of the destination buffer.
+ * Returns the length of s.
+ */
+size_t rep_strlcpy(char *d, const char *s, size_t bufsize)
+{
+ size_t len = strlen(s);
+ size_t ret = len;
+
+ if (bufsize <= 0) {
+ return 0;
+ }
+ if (len >= bufsize) {
+ len = bufsize - 1;
+ }
+ memcpy(d, s, len);
+ d[len] = 0;
+ return ret;
+}
+#endif
+
+#ifndef HAVE_STRLCAT
+/* like strncat but does not 0 fill the buffer and always null
+ terminates. bufsize is the length of the buffer, which should
+ be one more than the maximum resulting string length */
+size_t rep_strlcat(char *d, const char *s, size_t bufsize)
+{
+ size_t len1 = strnlen(d, bufsize);
+ size_t len2 = strlen(s);
+ size_t ret = len1 + len2;
+
+ if (len1+len2 >= bufsize) {
+ if (bufsize < (len1+1)) {
+ return ret;
+ }
+ len2 = bufsize - (len1+1);
+ }
+ if (len2 > 0) {
+ memcpy(d+len1, s, len2);
+ d[len1+len2] = 0;
+ }
+ return ret;
+}
+#endif
+
+#ifndef HAVE_MKTIME
+/*******************************************************************
+a mktime() replacement for those who don't have it - contributed by
+C.A. Lademann <cal@zls.com>
+Corrections by richard.kettlewell@kewill.com
+********************************************************************/
+
+#define MINUTE 60
+#define HOUR 60*MINUTE
+#define DAY 24*HOUR
+#define YEAR 365*DAY
+time_t rep_mktime(struct tm *t)
+{
+ struct tm *u;
+ time_t epoch = 0;
+ int n;
+ int mon [] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
+ y, m, i;
+
+ if(t->tm_year < 70)
+ return((time_t)-1);
+
+ n = t->tm_year + 1900 - 1;
+ epoch = (t->tm_year - 70) * YEAR +
+ ((n / 4 - n / 100 + n / 400) - (1969 / 4 - 1969 / 100 + 1969 / 400)) * DAY;
+
+ y = t->tm_year + 1900;
+ m = 0;
+
+ for(i = 0; i < t->tm_mon; i++) {
+ epoch += mon [m] * DAY;
+ if(m == 1 && y % 4 == 0 && (y % 100 != 0 || y % 400 == 0))
+ epoch += DAY;
+
+ if(++m > 11) {
+ m = 0;
+ y++;
+ }
+ }
+
+ epoch += (t->tm_mday - 1) * DAY;
+ epoch += t->tm_hour * HOUR + t->tm_min * MINUTE + t->tm_sec;
+
+ if((u = localtime(&epoch)) != NULL) {
+ t->tm_sec = u->tm_sec;
+ t->tm_min = u->tm_min;
+ t->tm_hour = u->tm_hour;
+ t->tm_mday = u->tm_mday;
+ t->tm_mon = u->tm_mon;
+ t->tm_year = u->tm_year;
+ t->tm_wday = u->tm_wday;
+ t->tm_yday = u->tm_yday;
+ t->tm_isdst = u->tm_isdst;
+ }
+
+ return(epoch);
+}
+#endif /* !HAVE_MKTIME */
+
+
+#ifndef HAVE_INITGROUPS
+/****************************************************************************
+ some systems don't have an initgroups call
+****************************************************************************/
+int rep_initgroups(char *name, gid_t id)
+{
+#ifndef HAVE_SETGROUPS
+ /* yikes! no SETGROUPS or INITGROUPS? how can this work? */
+ errno = ENOSYS;
+ return -1;
+#else /* HAVE_SETGROUPS */
+
+#include <grp.h>
+
+ gid_t *grouplst = NULL;
+ int max_gr = NGROUPS_MAX;
+ int ret;
+ int i,j;
+ struct group *g;
+ char *gr;
+
+ if((grouplst = malloc(sizeof(gid_t) * max_gr)) == NULL) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ grouplst[0] = id;
+ i = 1;
+ while (i < max_gr && ((g = (struct group *)getgrent()) != (struct group *)NULL)) {
+ if (g->gr_gid == id)
+ continue;
+ j = 0;
+ gr = g->gr_mem[0];
+ while (gr && (*gr != (char)NULL)) {
+ if (strcmp(name,gr) == 0) {
+ grouplst[i] = g->gr_gid;
+ i++;
+ gr = (char *)NULL;
+ break;
+ }
+ gr = g->gr_mem[++j];
+ }
+ }
+ endgrent();
+ ret = setgroups(i, grouplst);
+ free(grouplst);
+ return ret;
+#endif /* HAVE_SETGROUPS */
+}
+#endif /* HAVE_INITGROUPS */
+
+
+#ifndef HAVE_MEMMOVE
+/*******************************************************************
+safely copies memory, ensuring no overlap problems.
+this is only used if the machine does not have its own memmove().
+this is not the fastest algorithm in town, but it will do for our
+needs.
+********************************************************************/
+void *rep_memmove(void *dest,const void *src,int size)
+{
+ unsigned long d,s;
+ int i;
+ if (dest==src || !size) return(dest);
+
+ d = (unsigned long)dest;
+ s = (unsigned long)src;
+
+ if ((d >= (s+size)) || (s >= (d+size))) {
+ /* no overlap */
+ memcpy(dest,src,size);
+ return(dest);
+ }
+
+ if (d < s) {
+ /* we can forward copy */
+ if (s-d >= sizeof(int) &&
+ !(s%sizeof(int)) &&
+ !(d%sizeof(int)) &&
+ !(size%sizeof(int))) {
+ /* do it all as words */
+ int *idest = (int *)dest;
+ int *isrc = (int *)src;
+ size /= sizeof(int);
+ for (i=0;i<size;i++) idest[i] = isrc[i];
+ } else {
+ /* simplest */
+ char *cdest = (char *)dest;
+ char *csrc = (char *)src;
+ for (i=0;i<size;i++) cdest[i] = csrc[i];
+ }
+ } else {
+ /* must backward copy */
+ if (d-s >= sizeof(int) &&
+ !(s%sizeof(int)) &&
+ !(d%sizeof(int)) &&
+ !(size%sizeof(int))) {
+ /* do it all as words */
+ int *idest = (int *)dest;
+ int *isrc = (int *)src;
+ size /= sizeof(int);
+ for (i=size-1;i>=0;i--) idest[i] = isrc[i];
+ } else {
+ /* simplest */
+ char *cdest = (char *)dest;
+ char *csrc = (char *)src;
+ for (i=size-1;i>=0;i--) cdest[i] = csrc[i];
+ }
+ }
+ return(dest);
+}
+#endif /* HAVE_MEMMOVE */
+
+#ifndef HAVE_STRDUP
+/****************************************************************************
+duplicate a string
+****************************************************************************/
+char *rep_strdup(const char *s)
+{
+ size_t len;
+ char *ret;
+
+ if (!s) return(NULL);
+
+ len = strlen(s)+1;
+ ret = (char *)malloc(len);
+ if (!ret) return(NULL);
+ memcpy(ret,s,len);
+ return(ret);
+}
+#endif /* HAVE_STRDUP */
+
+#ifndef HAVE_SETLINEBUF
+void rep_setlinebuf(FILE *stream)
+{
+ setvbuf(stream, (char *)NULL, _IOLBF, 0);
+}
+#endif /* HAVE_SETLINEBUF */
+
+#ifndef HAVE_VSYSLOG
+#ifdef HAVE_SYSLOG
+void rep_vsyslog (int facility_priority, const char *format, va_list arglist)
+{
+ char *msg = NULL;
+ vasprintf(&msg, format, arglist);
+ if (!msg)
+ return;
+ syslog(facility_priority, "%s", msg);
+ free(msg);
+}
+#endif /* HAVE_SYSLOG */
+#endif /* HAVE_VSYSLOG */
+
+#ifndef HAVE_STRNLEN
+/**
+ Some platforms don't have strnlen
+**/
+ size_t rep_strnlen(const char *s, size_t max)
+{
+ size_t len;
+
+ for (len = 0; len < max; len++) {
+ if (s[len] == '\0') {
+ break;
+ }
+ }
+ return len;
+}
+#endif
+
+#ifndef HAVE_STRNDUP
+/**
+ Some platforms don't have strndup.
+**/
+char *rep_strndup(const char *s, size_t n)
+{
+ char *ret;
+
+ n = strnlen(s, n);
+ ret = malloc(n+1);
+ if (!ret)
+ return NULL;
+ memcpy(ret, s, n);
+ ret[n] = 0;
+
+ return ret;
+}
+#endif
+
+#if !defined(HAVE_WAITPID) && defined(HAVE_WAIT4)
+int rep_waitpid(pid_t pid,int *status,int options)
+{
+ return wait4(pid, status, options, NULL);
+}
+#endif
+
+#ifndef HAVE_SETEUID
+int rep_seteuid(uid_t euid)
+{
+#ifdef HAVE_SETRESUID
+ return setresuid(-1, euid, -1);
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+#endif
+
+#ifndef HAVE_SETEGID
+int rep_setegid(gid_t egid)
+{
+#ifdef HAVE_SETRESGID
+ return setresgid(-1, egid, -1);
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+#endif
+
+/*******************************************************************
+os/2 also doesn't have chroot
+********************************************************************/
+#ifndef HAVE_CHROOT
+int rep_chroot(const char *dname)
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+
+/*****************************************************************
+ Possibly replace mkstemp if it is broken.
+*****************************************************************/
+
+#ifndef HAVE_SECURE_MKSTEMP
+int rep_mkstemp(char *template)
+{
+ /* have a reasonable go at emulating it. Hope that
+ the system mktemp() isn't completely hopeless */
+ mktemp(template);
+ if (template[0] == 0)
+ return -1;
+ return open(template, O_CREAT|O_EXCL|O_RDWR, 0600);
+}
+#endif
+
+#ifndef HAVE_MKDTEMP
+char *rep_mkdtemp(char *template)
+{
+ char *dname;
+
+ if ((dname = mktemp(template))) {
+ if (mkdir(dname, 0700) >= 0) {
+ return dname;
+ }
+ }
+
+ return NULL;
+}
+#endif
+
+/*****************************************************************
+ Watch out: this is not thread safe.
+*****************************************************************/
+
+#ifndef HAVE_PREAD
+ssize_t rep_pread(int __fd, void *__buf, size_t __nbytes, off_t __offset)
+{
+ if (lseek(__fd, __offset, SEEK_SET) != __offset) {
+ return -1;
+ }
+ return read(__fd, __buf, __nbytes);
+}
+#endif
+
+/*****************************************************************
+ Watch out: this is not thread safe.
+*****************************************************************/
+
+#ifndef HAVE_PWRITE
+ssize_t rep_pwrite(int __fd, const void *__buf, size_t __nbytes, off_t __offset)
+{
+ if (lseek(__fd, __offset, SEEK_SET) != __offset) {
+ return -1;
+ }
+ return write(__fd, __buf, __nbytes);
+}
+#endif
+
+#ifndef HAVE_STRCASESTR
+char *rep_strcasestr(const char *haystack, const char *needle)
+{
+ const char *s;
+ size_t nlen = strlen(needle);
+ for (s=haystack;*s;s++) {
+ if (toupper(*needle) == toupper(*s) &&
+ strncasecmp(s, needle, nlen) == 0) {
+ return (char *)((uintptr_t)s);
+ }
+ }
+ return NULL;
+}
+#endif
+
+#ifndef HAVE_STRSEP
+char *rep_strsep(char **pps, const char *delim)
+{
+ char *ret = *pps;
+ char *p = *pps;
+
+ if (p == NULL) {
+ return NULL;
+ }
+ p += strcspn(p, delim);
+ if (*p == '\0') {
+ *pps = NULL;
+ } else {
+ *p = '\0';
+ *pps = p + 1;
+ }
+ return ret;
+}
+#endif
+
+#ifndef HAVE_STRTOK_R
+/* based on GLIBC version, copyright Free Software Foundation */
+char *rep_strtok_r(char *s, const char *delim, char **save_ptr)
+{
+ char *token;
+
+ if (s == NULL) s = *save_ptr;
+
+ s += strspn(s, delim);
+ if (*s == '\0') {
+ *save_ptr = s;
+ return NULL;
+ }
+
+ token = s;
+ s = strpbrk(token, delim);
+ if (s == NULL) {
+ *save_ptr = token + strlen(token);
+ } else {
+ *s = '\0';
+ *save_ptr = s + 1;
+ }
+
+ return token;
+}
+#endif
+
+
+#ifndef HAVE_STRTOLL
+long long int rep_strtoll(const char *str, char **endptr, int base)
+{
+#ifdef HAVE_STRTOQ
+ return strtoq(str, endptr, base);
+#elif defined(HAVE___STRTOLL)
+ return __strtoll(str, endptr, base);
+#elif SIZEOF_LONG == SIZEOF_LONG_LONG
+ return (long long int) strtol(str, endptr, base);
+#else
+# error "You need a strtoll function"
+#endif
+}
+#else
+#ifdef HAVE_BSD_STRTOLL
+#undef strtoll
+long long int rep_strtoll(const char *str, char **endptr, int base)
+{
+ int saved_errno = errno;
+ long long int nb = strtoll(str, endptr, base);
+ /* With glibc EINVAL is only returned if base is not ok */
+ if (errno == EINVAL) {
+ if (base == 0 || (base >1 && base <37)) {
+ /* Base was ok so it's because we were not
+ * able to make the conversion.
+ * Let's reset errno.
+ */
+ errno = saved_errno;
+ }
+ }
+ return nb;
+}
+#endif /* HAVE_BSD_STRTOLL */
+#endif /* HAVE_STRTOLL */
+
+
+#ifndef HAVE_STRTOULL
+unsigned long long int rep_strtoull(const char *str, char **endptr, int base)
+{
+#ifdef HAVE_STRTOUQ
+ return strtouq(str, endptr, base);
+#elif defined(HAVE___STRTOULL)
+ return __strtoull(str, endptr, base);
+#elif SIZEOF_LONG == SIZEOF_LONG_LONG
+ return (unsigned long long int) strtoul(str, endptr, base);
+#else
+# error "You need a strtoull function"
+#endif
+}
+#else
+#ifdef HAVE_BSD_STRTOLL
+#undef strtoull
+unsigned long long int rep_strtoull(const char *str, char **endptr, int base)
+{
+ int saved_errno = errno;
+ unsigned long long int nb = strtoull(str, endptr, base);
+ /* With glibc EINVAL is only returned if base is not ok */
+ if (errno == EINVAL) {
+ if (base == 0 || (base >1 && base <37)) {
+ /* Base was ok so it's because we were not
+ * able to make the conversion.
+ * Let's reset errno.
+ */
+ errno = saved_errno;
+ }
+ }
+ return nb;
+}
+#endif /* HAVE_BSD_STRTOLL */
+#endif /* HAVE_STRTOULL */
+
+#ifndef HAVE_SETENV
+int rep_setenv(const char *name, const char *value, int overwrite)
+{
+ char *p;
+ size_t l1, l2;
+ int ret;
+
+ if (!overwrite && getenv(name)) {
+ return 0;
+ }
+
+ l1 = strlen(name);
+ l2 = strlen(value);
+
+ p = malloc(l1+l2+2);
+ if (p == NULL) {
+ return -1;
+ }
+ memcpy(p, name, l1);
+ p[l1] = '=';
+ memcpy(p+l1+1, value, l2);
+ p[l1+l2+1] = 0;
+
+ ret = putenv(p);
+ if (ret != 0) {
+ free(p);
+ }
+
+ return ret;
+}
+#endif
+
+#ifndef HAVE_UNSETENV
+int rep_unsetenv(const char *name)
+{
+ extern char **environ;
+ size_t len = strlen(name);
+ size_t i, count;
+
+ if (environ == NULL || getenv(name) == NULL) {
+ return 0;
+ }
+
+ for (i=0;environ[i];i++) /* noop */ ;
+
+ count=i;
+
+ for (i=0;i<count;) {
+ if (strncmp(environ[i], name, len) == 0 && environ[i][len] == '=') {
+ /* note: we do _not_ free the old variable here. It is unsafe to
+ do so, as the pointer may not have come from malloc */
+ memmove(&environ[i], &environ[i+1], (count-i)*sizeof(char *));
+ count--;
+ } else {
+ i++;
+ }
+ }
+
+ return 0;
+}
+#endif
+
+#ifndef HAVE_UTIME
+int rep_utime(const char *filename, const struct utimbuf *buf)
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+
+#ifndef HAVE_UTIMES
+int rep_utimes(const char *filename, const struct timeval tv[2])
+{
+ struct utimbuf u;
+
+ u.actime = tv[0].tv_sec;
+ if (tv[0].tv_usec > 500000) {
+ u.actime += 1;
+ }
+
+ u.modtime = tv[1].tv_sec;
+ if (tv[1].tv_usec > 500000) {
+ u.modtime += 1;
+ }
+
+ return utime(filename, &u);
+}
+#endif
+
+#ifndef HAVE_DUP2
+int rep_dup2(int oldfd, int newfd)
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+
+#ifndef HAVE_CHOWN
+/**
+chown isn't used much but OS/2 doesn't have it
+**/
+int rep_chown(const char *fname, uid_t uid, gid_t gid)
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+
+#ifndef HAVE_LINK
+int rep_link(const char *oldpath, const char *newpath)
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+
+#ifndef HAVE_READLINK
+int rep_readlink(const char *path, char *buf, size_t bufsiz)
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+
+#ifndef HAVE_SYMLINK
+int rep_symlink(const char *oldpath, const char *newpath)
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+
+#ifndef HAVE_LCHOWN
+int rep_lchown(const char *fname,uid_t uid,gid_t gid)
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+
+#ifndef HAVE_REALPATH
+char *rep_realpath(const char *path, char *resolved_path)
+{
+ /* As realpath is not a system call we can't return ENOSYS. */
+ errno = EINVAL;
+ return NULL;
+}
+#endif
+
+
+#ifndef HAVE_MEMMEM
+void *rep_memmem(const void *haystack, size_t haystacklen,
+ const void *needle, size_t needlelen)
+{
+ if (needlelen == 0) {
+ return discard_const(haystack);
+ }
+ while (haystacklen >= needlelen) {
+ char *p = (char *)memchr(haystack, *(const char *)needle,
+ haystacklen-(needlelen-1));
+ if (!p) return NULL;
+ if (memcmp(p, needle, needlelen) == 0) {
+ return p;
+ }
+ haystack = p+1;
+ haystacklen -= (p - (const char *)haystack) + 1;
+ }
+ return NULL;
+}
+#endif
+
+#if !defined(HAVE_VDPRINTF) || !defined(HAVE_C99_VSNPRINTF)
+int rep_vdprintf(int fd, const char *format, va_list ap)
+{
+ char *s = NULL;
+ int ret;
+
+ vasprintf(&s, format, ap);
+ if (s == NULL) {
+ errno = ENOMEM;
+ return -1;
+ }
+ ret = write(fd, s, strlen(s));
+ free(s);
+ return ret;
+}
+#endif
+
+#if !defined(HAVE_DPRINTF) || !defined(HAVE_C99_VSNPRINTF)
+int rep_dprintf(int fd, const char *format, ...)
+{
+ int ret;
+ va_list ap;
+
+ va_start(ap, format);
+ ret = vdprintf(fd, format, ap);
+ va_end(ap);
+
+ return ret;
+}
+#endif
+
+#ifndef HAVE_GET_CURRENT_DIR_NAME
+char *rep_get_current_dir_name(void)
+{
+ char buf[PATH_MAX+1];
+ char *p;
+ p = getcwd(buf, sizeof(buf));
+ if (p == NULL) {
+ return NULL;
+ }
+ return strdup(p);
+}
+#endif
+
+#ifndef HAVE_STRERROR_R
+int rep_strerror_r(int errnum, char *buf, size_t buflen)
+{
+ char *s = strerror(errnum);
+ if (strlen(s)+1 > buflen) {
+ errno = ERANGE;
+ return -1;
+ }
+ strncpy(buf, s, buflen);
+ return 0;
+}
+#elif (!defined(STRERROR_R_XSI_NOT_GNU))
+#undef strerror_r
+int rep_strerror_r(int errnum, char *buf, size_t buflen)
+{
+ char *s = strerror_r(errnum, buf, buflen);
+ if (s == NULL) {
+ /* Shouldn't happen, should always get a string */
+ return EINVAL;
+ }
+ if (s != buf) {
+ strlcpy(buf, s, buflen);
+ if (strlen(s) > buflen - 1) {
+ return ERANGE;
+ }
+ }
+ return 0;
+
+}
+#endif
+
+#ifndef HAVE_CLOCK_GETTIME
+int rep_clock_gettime(clockid_t clk_id, struct timespec *tp)
+{
+ struct timeval tval;
+ switch (clk_id) {
+ case 0: /* CLOCK_REALTIME :*/
+#if defined(HAVE_GETTIMEOFDAY_TZ) || defined(HAVE_GETTIMEOFDAY_TZ_VOID)
+ gettimeofday(&tval,NULL);
+#else
+ gettimeofday(&tval);
+#endif
+ tp->tv_sec = tval.tv_sec;
+ tp->tv_nsec = tval.tv_usec * 1000;
+ break;
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+ return 0;
+}
+#endif
+
+#ifndef HAVE_MEMALIGN
+void *rep_memalign( size_t align, size_t size )
+{
+#if defined(HAVE_POSIX_MEMALIGN)
+ void *p = NULL;
+ int ret = posix_memalign( &p, align, size );
+ if ( ret == 0 )
+ return p;
+
+ return NULL;
+#else
+ /* On *BSD systems memaligns doesn't exist, but memory will
+ * be aligned on allocations of > pagesize. */
+#if defined(SYSCONF_SC_PAGESIZE)
+ size_t pagesize = (size_t)sysconf(_SC_PAGESIZE);
+#elif defined(HAVE_GETPAGESIZE)
+ size_t pagesize = (size_t)getpagesize();
+#else
+ size_t pagesize = (size_t)-1;
+#endif
+ if (pagesize == (size_t)-1) {
+ errno = ENOSYS;
+ return NULL;
+ }
+ if (size < pagesize) {
+ size = pagesize;
+ }
+ return malloc(size);
+#endif
+}
+#endif
+
+#ifndef HAVE_GETPEEREID
+int rep_getpeereid(int s, uid_t *uid, gid_t *gid)
+{
+#if defined(HAVE_PEERCRED)
+ struct ucred cred;
+ socklen_t cred_len = sizeof(struct ucred);
+ int ret;
+
+#undef getsockopt
+ ret = getsockopt(s, SOL_SOCKET, SO_PEERCRED, (void *)&cred, &cred_len);
+ if (ret != 0) {
+ return -1;
+ }
+
+ if (cred_len != sizeof(struct ucred)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ *uid = cred.uid;
+ *gid = cred.gid;
+ return 0;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+#endif
+
+#ifndef HAVE_USLEEP
+int rep_usleep(useconds_t sec)
+{
+ struct timeval tval;
+ /*
+ * Fake it with select...
+ */
+ tval.tv_sec = 0;
+ tval.tv_usec = usecs/1000;
+ select(0,NULL,NULL,NULL,&tval);
+ return 0;
+}
+#endif /* HAVE_USLEEP */
+
+#ifndef HAVE_SETPROCTITLE
+void rep_setproctitle(const char *fmt, ...)
+{
+}
+#endif
+#ifndef HAVE_SETPROCTITLE_INIT
+void rep_setproctitle_init(int argc, char *argv[], char *envp[])
+{
+}
+#endif
+
+#ifndef HAVE_MEMSET_S
+# ifndef RSIZE_MAX
+# define RSIZE_MAX (SIZE_MAX >> 1)
+# endif
+
+int rep_memset_s(void *dest, size_t destsz, int ch, size_t count)
+{
+ if (dest == NULL) {
+ return EINVAL;
+ }
+
+ if (destsz > RSIZE_MAX ||
+ count > RSIZE_MAX ||
+ count > destsz) {
+ return ERANGE;
+ }
+
+#if defined(HAVE_MEMSET_EXPLICIT)
+ memset_explicit(dest, destsz, ch, count);
+#else /* HAVE_MEMSET_EXPLICIT */
+ memset(dest, ch, count);
+# if defined(HAVE_GCC_VOLATILE_MEMORY_PROTECTION)
+ /* See http://llvm.org/bugs/show_bug.cgi?id=15495 */
+ __asm__ volatile("" : : "g"(dest) : "memory");
+# endif /* HAVE_GCC_VOLATILE_MEMORY_PROTECTION */
+#endif /* HAVE_MEMSET_EXPLICIT */
+
+ return 0;
+}
+#endif /* HAVE_MEMSET_S */
+
+#ifndef HAVE_GETPROGNAME
+# ifndef HAVE_PROGRAM_INVOCATION_SHORT_NAME
+# define PROGNAME_SIZE 32
+static char rep_progname[PROGNAME_SIZE];
+# endif /* HAVE_PROGRAM_INVOCATION_SHORT_NAME */
+
+const char *rep_getprogname(void)
+{
+#ifdef HAVE_PROGRAM_INVOCATION_SHORT_NAME
+ return program_invocation_short_name;
+#else /* HAVE_PROGRAM_INVOCATION_SHORT_NAME */
+ FILE *fp = NULL;
+ char cmdline[4096] = {0};
+ char *p = NULL;
+ pid_t pid;
+ size_t nread;
+ int len;
+ int rc;
+
+ if (rep_progname[0] != '\0') {
+ return rep_progname;
+ }
+
+ len = snprintf(rep_progname, sizeof(rep_progname), "%s", "<unknown>");
+ if (len <= 0) {
+ return NULL;
+ }
+
+ pid = getpid();
+ if (pid <= 1 || pid == (pid_t)-1) {
+ return NULL;
+ }
+
+ len = snprintf(cmdline,
+ sizeof(cmdline),
+ "/proc/%u/cmdline",
+ (unsigned int)pid);
+ if (len <= 0 || len == sizeof(cmdline)) {
+ return NULL;
+ }
+
+ fp = fopen(cmdline, "r");
+ if (fp == NULL) {
+ return NULL;
+ }
+
+ nread = fread(cmdline, 1, sizeof(cmdline) - 1, fp);
+
+ rc = fclose(fp);
+ if (rc != 0) {
+ return NULL;
+ }
+
+ if (nread == 0) {
+ return NULL;
+ }
+
+ cmdline[nread] = '\0';
+
+ p = strrchr(cmdline, '/');
+ if (p != NULL) {
+ p++;
+ } else {
+ p = cmdline;
+ }
+
+ len = strlen(p);
+ if (len > PROGNAME_SIZE) {
+ p[PROGNAME_SIZE - 1] = '\0';
+ }
+
+ (void)snprintf(rep_progname, sizeof(rep_progname), "%s", p);
+
+ return rep_progname;
+#endif /* HAVE_PROGRAM_INVOCATION_SHORT_NAME */
+}
+#endif /* HAVE_GETPROGNAME */
+
+#ifndef HAVE_COPY_FILE_RANGE
+ssize_t rep_copy_file_range(int fd_in,
+ loff_t *off_in,
+ int fd_out,
+ loff_t *off_out,
+ size_t len,
+ unsigned int flags)
+{
+# ifdef HAVE_SYSCALL_COPY_FILE_RANGE
+ return syscall(__NR_copy_file_range,
+ fd_in,
+ off_in,
+ fd_out,
+ off_out,
+ len,
+ flags);
+# endif /* HAVE_SYSCALL_COPY_FILE_RANGE */
+ errno = ENOSYS;
+ return -1;
+}
+#endif /* HAVE_COPY_FILE_RANGE */
+
+#ifndef HAVE_OPENAT2
+
+/* fallback known wellknown __NR_openat2 values */
+#ifndef __NR_openat2
+# if defined(LINUX) && defined(HAVE_SYS_SYSCALL_H)
+# if defined(__i386__)
+# define __NR_openat2 437
+# elif defined(__x86_64__) && defined(__LP64__)
+# define __NR_openat2 437 /* 437 0x1B5 */
+# elif defined(__x86_64__) && defined(__ILP32__)
+# define __NR_openat2 1073742261 /* 1073742261 0x400001B5 */
+# elif defined(__aarch64__)
+# define __NR_openat2 437
+# elif defined(__arm__)
+# define __NR_openat2 437
+# elif defined(__sparc__)
+# define __NR_openat2 437
+# endif
+# endif /* defined(LINUX) && defined(HAVE_SYS_SYSCALL_H) */
+#endif /* !__NR_openat2 */
+
+#ifdef DISABLE_OPATH
+/*
+ * systems without O_PATH also don't have openat2,
+ * so make sure we at a realistic combination.
+ */
+#undef __NR_openat2
+#endif /* DISABLE_OPATH */
+
+long rep_openat2(int dirfd, const char *pathname,
+ struct open_how *how, size_t size)
+{
+#ifdef __NR_openat2
+#if _FILE_OFFSET_BITS == 64 && SIZE_MAX == 0xffffffffUL && defined(O_LARGEFILE)
+ struct open_how __how;
+
+#if defined(O_PATH) && ! defined(DISABLE_OPATH)
+ if ((how->flags & O_PATH) == 0)
+#endif
+ {
+ if (sizeof(__how) == size) {
+ __how = *how;
+
+ __how.flags |= O_LARGEFILE;
+ how = &__how;
+ }
+ }
+#endif
+
+ return syscall(__NR_openat2,
+ dirfd,
+ pathname,
+ how,
+ size);
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+#endif /* !HAVE_OPENAT2 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 00:11:31 +0000