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
#include "system/filesys.h"
#include "system/time.h"
+#include "system/network.h"
#include "system/passwd.h"
#include "system/syslog.h"
#include "system/locale.h"
#ifndef HAVE_STRLCPY
-/* like strncpy but does not 0 fill the buffer and always null
- terminates. bufsize is the size of the destination buffer */
+/*
+ * 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;
+
+ if (bufsize <= 0) {
+ return 0;
+ }
+ if (len >= bufsize) {
+ len = bufsize - 1;
+ }
memcpy(d, s, len);
d[len] = 0;
return ret;
be one more than the maximum resulting string length */
size_t rep_strlcat(char *d, const char *s, size_t bufsize)
{
- size_t len1 = strlen(d);
+ size_t len1 = strnlen(d, bufsize);
size_t len2 = strlen(s);
size_t ret = len1 + len2;
#endif /* HAVE_INITGROUPS */
-#if (defined(SecureWare) && defined(SCO))
-/* This is needed due to needing the nap() function but we don't want
- to include the Xenix libraries since that will break other things...
- BTW: system call # 0x0c28 is the same as calling nap() */
-long nap(long milliseconds) {
- return syscall(0x0c28, milliseconds);
- }
-#endif
-
-
#ifndef HAVE_MEMMOVE
/*******************************************************************
safely copies memory, ensuring no overlap problems.
int rep_mkstemp(char *template)
{
/* have a reasonable go at emulating it. Hope that
- the system mktemp() isn't completly hopeless */
- char *p = mktemp(template);
- if (!p)
+ the system mktemp() isn't completely hopeless */
+ mktemp(template);
+ if (template[0] == 0)
return -1;
- return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
+ return open(template, O_CREAT|O_EXCL|O_RDWR, 0600);
}
#endif
}
#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)
}
#endif
+
#ifndef HAVE_STRTOLL
long long int rep_strtoll(const char *str, char **endptr, int base)
{
# error "You need a strtoll function"
#endif
}
-#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 convertion.
+ * Let's reset errno.
+ */
+ errno = saved_errno;
+ }
+ }
+ return nb;
+}
+#endif /* HAVE_BSD_STRTOLL */
+#endif /* HAVE_STRTOLL */
#ifndef HAVE_STRTOULL
# error "You need a strtoull function"
#endif
}
-#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 convertion.
+ * 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)
return discard_const(haystack);
}
while (haystacklen >= needlelen) {
- char *p = memchr(haystack, *(const char *)needle,
- haystacklen-(needlelen-1));
+ char *p = (char *)memchr(haystack, *(const char *)needle,
+ haystacklen-(needlelen-1));
if (!p) return NULL;
if (memcmp(p, needle, needlelen) == 0) {
return p;
}
#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 */
git.samba.org / samba.git / blobdiff