diff options
| -rw-r--r-- | ChangeLog | 97 | ||||
| -rw-r--r-- | catgets/open_catalog.c | 10 | ||||
| -rw-r--r-- | iconv/gconv_int.h | 28 | ||||
| -rw-r--r-- | intl/bindtextdom.c | 268 | ||||
| -rw-r--r-- | intl/dcigettext.c | 103 | ||||
| -rw-r--r-- | intl/finddomain.c | 9 | ||||
| -rw-r--r-- | intl/gettextP.h | 10 | ||||
| -rw-r--r-- | intl/l10nflist.c | 7 | ||||
| -rw-r--r-- | intl/libintl.h | 5 | ||||
| -rw-r--r-- | intl/loadinfo.h | 10 | ||||
| -rw-r--r-- | intl/loadmsgcat.c | 89 | ||||
| -rw-r--r-- | intl/localealias.c | 23 | ||||
| -rw-r--r-- | libio/stdio.h | 10 | ||||
| -rw-r--r-- | manual/intro.texi | 2 | ||||
| -rw-r--r-- | manual/message.texi | 66 | ||||
| -rw-r--r-- | manual/process.texi | 5 | ||||
| -rw-r--r-- | manual/signal.texi | 2 | ||||
| -rw-r--r-- | manual/startup.texi | 183 | ||||
| -rw-r--r-- | po/gl.po | 6 | ||||
| -rw-r--r-- | resolv/resolv.h | 1 | ||||
| -rw-r--r-- | sysdeps/generic/dl-environ.c | 9 | ||||
| -rw-r--r-- | wcsmbs/wcsmbsload.c | 28 |
22 files changed, 745 insertions, 226 deletions
@@ -1,5 +1,102 @@ 2000-05-03 Ulrich Drepper <drepper@redhat.com> + * libio/stdio.h: Make fseeko and ftello prototypes available is + __USE_LARGEFILE. Patch by Paul Eggert <eggert@twinsun.com>. + + * sysdeps/generic/dl-environ.c (unsetenv): Follow change to the + real unsetenv implementation from 1999-07-29 [PR libc/1714]. + +2000-05-03 Bruno Haible <haible@clisp.cons.org> + + * intl/dcigettext.c (dcigettext): Do the defaulting of 'domainname' + before calling tfind. + +2000-03-05 Jakub Jelinek <jakub@redhat.com> + + * resolv/resolv.h (res_querydomain): Remove redefinition to + __res_querydomain (reported by Owen Taylor <otaylor@redhat.com>). + +2000-05-03 Ulrich Drepper <drepper@redhat.com> + + * po/gl.po: Update from translation team. + + * manual/intro.texi (Program Basics): Change section title. + * manual/process.texi: Fix reference. + (Executing a File): Add reference exec in other section. + * manual/signal.texi: Fix reference. + * manual/startup.texi: Document syscall function. + Patches by Bryan Henderson <bryanh@giraffe-data.com>. + +2000-04-29 Bruno Haible <haible@clisp.cons.org> + + * intl/libintl.h (bind_textdomain_codeset): New declaration. + * intl/bindtextdom.c (set_binding_values): New function. + (bindtextdomain): Call it. + (bind_textdomain_codeset): New function. + * intl/dcigettext.c (dcigettext): Pass binding to _nl_find_domain. + (free_mem): Free each binding's codeset. + * intl/gettextP.h (struct binding): Add codeset field. + (_nl_find_domain): Add domainbinding argument. + * intl/finddomain.c (_nl_find_domain): Add domainbinding argument. + Pass it to _nl_make_l10nflist. + * intl/loadinfo.h (struct loaded_l10nfile): Add domainbinding field. + (_nl_make_l10nflist): Add domainbinding argument. + * intl/l10nflist.c (_nl_make_l10nflist): Add domainbinding argument. + * intl/loadmsgcat.c (_nl_load_domain): Look at the domainbinding's + codeset when determining outcharset. If !_LIBC && HAVE_ICONV, call + locale_charset(). + * manual/message.texi: New node "Charset conversion in gettext". + +2000-04-30 Bruno Haible <haible@clisp.cons.org> + + * catgets/open_catalog.c (__open_catalog): Use __builtin_expect where + appropriate. Handle possible __read error. + +2000-04-29 Bruno Haible <haible@clisp.cons.org> + + * intl/gettextP.h (__builtin_expect): Define as empty if not a + compiler builtin. + * intl/loadinfo.h (__builtin_expect): Likewise. + * intl/dcigettext.c (dcigettext, _nl_find_msg): Use + __builtin_expect where appropriate. + * intl/loadmsgcat.c (_nl_load_domain): Likewise. + * intl/localealias.c (extend_alias_table): Return an error indicator. + (read_alias_file): Bail out if extend_alias_table fails. + +2000-04-29 Bruno Haible <haible@clisp.cons.org> + + * intl/loadmsgcat.c: Define _GNU_SOURCE as early as possible. + * intl/localealias.c: Likewise. + +2000-05-01 Bruno Haible <haible@clisp.cons.org> + + * intl/loadmsgcat.c (_nl_load_domain): Initialize domain->conv_tab. + Initialize domain->plural and domain->nplurals even if there is no + nullentry. + +2000-05-01 Bruno Haible <haible@clisp.cons.org> + + * intl/dcigettext.c (_nl_find_msg): Terminate __gconv loop if return + value is == __GCONV_OK or == __GCONV_EMPTY_INPUT, not != __GCONV_OK. + In case of failure, goto converted. + +2000-05-01 Bruno Haible <haible@clisp.cons.org> + + * wcsmbs/wcsmbsload.c (norm_add_slashes): Move away. + * iconv/gconv_int.h (norm_add_slashes): Move to here. + * intl/loadmsgcat.c (_nl_load_domain): Normalize strings passed to + __gconv_open. + +2000-04-29 Bruno Haible <haible@clisp.cons.org> + + * intl/dcigettext.c (transcmp): Compare the domains as well. + (dcigettext): Call strlen (msgid1) after testing msgid1 against NULL, + not before. + * intl/loadmsgcat.c (_nl_load_domain): Deal with EINTR. Include + <errno.h>. + +2000-05-03 Ulrich Drepper <drepper@redhat.com> + * string/bits/string2.h: Declare __strdup and __strndup if necessary. Reported by Bruno Haible. diff --git a/catgets/open_catalog.c b/catgets/open_catalog.c index c5193e166d..4a63a138e0 100644 --- a/catgets/open_catalog.c +++ b/catgets/open_catalog.c @@ -50,7 +50,7 @@ __open_catalog (__nl_catd catalog) __libc_lock_lock (catalog->lock); /* Check whether there was no other thread faster. */ - if (catalog->status != closed) + if (__builtin_expect (catalog->status != closed, 0)) /* While we waited some other thread tried to open the catalog. */ goto unlock_return; @@ -60,7 +60,7 @@ __open_catalog (__nl_catd catalog) { const char *run_nlspath = catalog->nlspath; #define ENOUGH(n) \ - if (bufact + (n) >=bufmax) \ + if (__builtin_expect (bufact + (n) >= bufmax, 0)) \ { \ char *old_buf = buf; \ bufmax += 256 + (n); \ @@ -251,8 +251,12 @@ __open_catalog (__nl_catd catalog) { size_t now = __read (fd, (((char *) &catalog->file_ptr) + (st.st_size - todo)), todo); - if (now == 0) + if (now == 0 || now == (size_t) -1) { +#ifdef EINTR + if (now == (size_t) -1 && errno == EINTR) + continue; +#endif free ((void *) catalog->file_ptr); catalog->status = nonexisting; goto close_unlock_return; diff --git a/iconv/gconv_int.h b/iconv/gconv_int.h index 4c8024be3e..8624f74967 100644 --- a/iconv/gconv_int.h +++ b/iconv/gconv_int.h @@ -100,6 +100,34 @@ extern size_t __gconv_nmodules; extern struct gconv_module *__gconv_modules_db; +/* The gconv functions expects the name to be in upper case and complete, + including the trailing slashes if necessary. */ +#define norm_add_slashes(str) \ + ({ \ + const char *cp = (str); \ + char *result; \ + char *tmp; \ + size_t cnt = 0; \ + \ + while (*cp != '\0') \ + if (*cp++ == '/') \ + ++cnt; \ + \ + tmp = result = alloca (cp - (str) + 3); \ + cp = (str); \ + while (*cp != '\0') \ + *tmp++ = _toupper (*cp++); \ + if (cnt < 2) \ + { \ + *tmp++ = '/'; \ + if (cnt < 1) \ + *tmp++ = '/'; \ + } \ + *tmp = '\0'; \ + result; \ + }) + + /* Return in *HANDLE decriptor for transformation from FROMSET to TOSET. */ extern int __gconv_open (const char *__toset, const char *__fromset, __gconv_t *__handle, int flags) diff --git a/intl/bindtextdom.c b/intl/bindtextdom.c index c5d4901a85..3d49344aaf 100644 --- a/intl/bindtextdom.c +++ b/intl/bindtextdom.c @@ -75,29 +75,44 @@ __libc_rwlock_define (extern, _nl_state_lock) prefix. So we have to make a difference here. */ #ifdef _LIBC # define BINDTEXTDOMAIN __bindtextdomain +# define BIND_TEXTDOMAIN_CODESET __bind_textdomain_codeset # ifndef strdup # define strdup(str) __strdup (str) # endif #else # define BINDTEXTDOMAIN bindtextdomain__ +# define BIND_TEXTDOMAIN_CODESET bind_textdomain_codeset__ #endif -/* Specify that the DOMAINNAME message catalog will be found - in DIRNAME rather than in the system locale data base. */ -char * -BINDTEXTDOMAIN (domainname, dirname) +/* Specifies the directory name *DIRNAMEP and the output codeset *CODESETP + to be used for the DOMAINNAME message catalog. + If *DIRNAMEP or *CODESETP is NULL, the corresponding attribute is not + modified, only the current value is returned. + If DIRNAMEP or CODESETP is NULL, the corresponding attribute is neither + modified nor returned. */ +static void +set_binding_values (domainname, dirnamep, codesetp) const char *domainname; - const char *dirname; + const char **dirnamep; + const char **codesetp; { struct binding *binding; - char *result; + int modified; /* Some sanity checks. */ if (domainname == NULL || domainname[0] == '\0') - return NULL; + { + if (dirnamep) + *dirnamep = NULL; + if (codesetp) + *codesetp = NULL; + return; + } __libc_rwlock_wrlock (_nl_state_lock); + modified = 0; + for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) { int compare = strcmp (domainname, binding->domainname); @@ -112,40 +127,96 @@ BINDTEXTDOMAIN (domainname, dirname) } } - if (dirname == NULL) - /* The current binding has be to returned. */ - result = binding == NULL ? (char *) _nl_default_dirname : binding->dirname; - else if (binding != NULL) + if (binding != NULL) { - /* The domain is already bound. If the new value and the old - one are equal we simply do nothing. Otherwise replace the - old binding. */ - result = binding->dirname; - if (strcmp (dirname, result) != 0) + if (dirnamep) { - if (strcmp (dirname, _nl_default_dirname) == 0) - result = (char *) _nl_default_dirname; + const char *dirname = *dirnamep; + + if (dirname == NULL) + /* The current binding has be to returned. */ + *dirnamep = binding->dirname; else { + /* The domain is already bound. If the new value and the old + one are equal we simply do nothing. Otherwise replace the + old binding. */ + char *result = binding->dirname; + if (strcmp (dirname, result) != 0) + { + if (strcmp (dirname, _nl_default_dirname) == 0) + result = (char *) _nl_default_dirname; + else + { #if defined _LIBC || defined HAVE_STRDUP - result = strdup (dirname); + result = strdup (dirname); #else - size_t len = strlen (dirname) + 1; - result = (char *) malloc (len); - if (result != NULL) - memcpy (result, dirname, len); + size_t len = strlen (dirname) + 1; + result = (char *) malloc (len); + if (__builtin_expect (result != NULL, 1)) + memcpy (result, dirname, len); #endif + } + + if (__builtin_expect (result != NULL, 1)) + { + if (binding->dirname != _nl_default_dirname) + free (binding->dirname); + + binding->dirname = result; + modified = 1; + } + } + *dirnamep = result; } + } + + if (codesetp) + { + const char *codeset = *codesetp; - if (result != NULL) + if (codeset == NULL) + /* The current binding has be to returned. */ + *codesetp = binding->codeset; + else { - if (binding->dirname != _nl_default_dirname) - free (binding->dirname); + /* The domain is already bound. If the new value and the old + one are equal we simply do nothing. Otherwise replace the + old binding. */ + char *result = binding->codeset; + if (result == NULL || strcmp (codeset, result) != 0) + { +#if defined _LIBC || defined HAVE_STRDUP + result = strdup (codeset); +#else + size_t len = strlen (codeset) + 1; + result = (char *) malloc (len); + if (__builtin_expect (result != NULL, 1)) + memcpy (result, codeset, len); +#endif - binding->dirname = result; + if (__builtin_expect (result != NULL, 1)) + { + if (binding->codeset != NULL) + free (binding->codeset); + + binding->codeset = result; + modified = 1; + } + } + *codesetp = result; } } } + else if ((dirnamep == NULL || *dirnamep == NULL) + && (codesetp == NULL || *codesetp == NULL)) + { + /* Simply return the default values. */ + if (dirnamep) + *dirnamep = _nl_default_dirname; + if (codesetp) + *codesetp = NULL; + } else { /* We have to create a new binding. */ @@ -153,61 +224,140 @@ BINDTEXTDOMAIN (domainname, dirname) struct binding *new_binding = (struct binding *) malloc (sizeof (*new_binding) + len); - if (new_binding == NULL) - result = NULL; - else + if (__builtin_expect (new_binding == NULL, 0)) + goto failed; + + memcpy (new_binding->domainname, domainname, len); + + if (dirnamep) { - memcpy (new_binding->domainname, domainname, len); + const char *dirname = *dirnamep; - if (strcmp (dirname, _nl_default_dirname) == 0) - result = new_binding->dirname = (char *) _nl_default_dirname; + if (dirname == NULL) + /* The default value. */ + dirname = _nl_default_dirname; else { + if (strcmp (dirname, _nl_default_dirname) == 0) + dirname = _nl_default_dirname; + else + { + char *result; #if defined _LIBC || defined HAVE_STRDUP - result = new_binding->dirname = strdup (dirname); + result = strdup (dirname); + if (__builtin_expect (result == NULL, 0)) + goto failed_dirname; #else - len = strlen (dirname) + 1; - result = new_binding->dirname = (char *) malloc (len); - if (result != NULL) - memcpy (new_binding->dirname, dirname, len); + size_t len = strlen (dirname) + 1; + result = (char *) malloc (len); + if (__builtin_expect (result == NULL, 0)) + goto failed_dirname; + memcpy (result, dirname, len); #endif + dirname = result; + } } + *dirnamep = dirname; + new_binding->dirname = (char *) dirname; } + else + /* The default value. */ + new_binding->dirname = (char *) _nl_default_dirname; - if (result != NULL) + if (codesetp) { - /* Now enqueue it. */ - if (_nl_domain_bindings == NULL - || strcmp (domainname, _nl_domain_bindings->domainname) < 0) - { - new_binding->next = _nl_domain_bindings; - _nl_domain_bindings = new_binding; - } - else + const char *codeset = *codesetp; + + if (codeset != NULL) { - binding = _nl_domain_bindings; - while (binding->next != NULL - && strcmp (domainname, binding->next->domainname) > 0) - binding = binding->next; + char *result; - new_binding->next = binding->next; - binding->next = new_binding; +#if defined _LIBC || defined HAVE_STRDUP + result = strdup (codeset); + if (__builtin_expect (result == NULL, 0)) + goto failed_codeset; +#else + size_t len = strlen (codeset) + 1; + result = (char *) malloc (len); + if (__builtin_expect (result == NULL, 0)) + goto failed_codeset; + memcpy (result, codeset, len); +#endif + codeset = result; } + *codesetp = codeset; + new_binding->codeset = (char *) codeset; + } + else + new_binding->codeset = NULL; + + /* Now enqueue it. */ + if (_nl_domain_bindings == NULL + || strcmp (domainname, _nl_domain_bindings->domainname) < 0) + { + new_binding->next = _nl_domain_bindings; + _nl_domain_bindings = new_binding; + } + else + { + binding = _nl_domain_bindings; + while (binding->next != NULL + && strcmp (domainname, binding->next->domainname) > 0) + binding = binding->next; + + new_binding->next = binding->next; + binding->next = new_binding; + } + + modified = 1; + + /* Here we deal with memory allocation failures. */ + if (0) + { + failed_codeset: + if (new_binding->dirname != _nl_default_dirname) + free (new_binding->dirname); + failed_dirname: + free (new_binding); + failed: + if (dirnamep) + *dirnamep = NULL; + if (codesetp) + *codesetp = NULL; } - else if (new_binding != NULL) - free (new_binding); } - /* For a succesful call we flush the caches. */ - if (result != NULL) + /* If we modified any binding, we flush the caches. */ + if (modified) ++_nl_msg_cat_cntr; __libc_rwlock_unlock (_nl_state_lock); +} + +/* Specify that the DOMAINNAME message catalog will be found + in DIRNAME rather than in the system locale data base. */ +char * +BINDTEXTDOMAIN (domainname, dirname) + const char *domainname; + const char *dirname; +{ + set_binding_values (domainname, &dirname, NULL); + return (char *) dirname; +} - return result; +/* Specify the character encoding in which the messages from the + DOMAINNAME message catalog will be returned. */ +char * +BIND_TEXTDOMAIN_CODESET (domainname, codeset) + const char *domainname; + const char *codeset; +{ + set_binding_values (domainname, NULL, &codeset); + return (char *) codeset; } #ifdef _LIBC -/* Alias for function name in GNU C Library. */ +/* Aliases for function names in GNU C Library. */ weak_alias (__bindtextdomain, bindtextdomain); +weak_alias (__bind_textdomain_codeset, bind_textdomain_codeset); #endif diff --git a/intl/dcigettext.c b/intl/dcigettext.c index 4f27cbb3d8..92732582f9 100644 --- a/intl/dcigettext.c +++ b/intl/dcigettext.c @@ -230,7 +230,7 @@ transcmp (const void *p1, const void *p2) result = strcmp (s1->msgid, s2->msgid); if (result == 0) { - result = strcmp (s1->msgid, s2->msgid); + result = strcmp (s1->domain, s2->domain); if (result == 0) { result = s1->plindex - s2->plindex; @@ -362,7 +362,7 @@ DCIGETTEXT (domainname, msgid1, msgid2, plural, n, category) #if defined HAVE_TSEARCH || defined _LIBC struct known_translation_t *search; struct known_translation_t **foundp = NULL; - size_t msgid_len = strlen (msgid1) + 1; + size_t msgid_len; #endif size_t domainname_len; @@ -372,7 +372,15 @@ DCIGETTEXT (domainname, msgid1, msgid2, plural, n, category) __libc_rwlock_rdlock (_nl_state_lock); + /* If DOMAINNAME is NULL, we are interested in the default domain. If + CATEGORY is not LC_MESSAGES this might not make much sense but the + definition left this undefined. */ + if (domainname == NULL) + domainname = _nl_current_default_domain; + #if defined HAVE_TSEARCH || defined _LIBC + msgid_len = strlen (msgid1) + 1; + if (plural == 0) { /* Try to find the translation among those which we found at @@ -399,12 +407,6 @@ DCIGETTEXT (domainname, msgid1, msgid2, plural, n, category) /* See whether this is a SUID binary or not. */ DETERMINE_SECURE; - /* If DOMAINNAME is NULL, we are interested in the default domain. If - CATEGORY is not LC_MESSAGES this might not make much sense but the - definition left this undefined. */ - if (domainname == NULL) - domainname = _nl_current_default_domain; - /* First find matching binding. */ for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) { @@ -529,7 +531,7 @@ DCIGETTEXT (domainname, msgid1, msgid2, plural, n, category) /* Find structure describing the message catalog matching the DOMAINNAME and CATEGORY. */ - domain = _nl_find_domain (dirname, single_locale, xdomainname); + domain = _nl_find_domain (dirname, single_locale, xdomainname, binding); if (domain != NULL) { @@ -605,7 +607,7 @@ DCIGETTEXT (domainname, msgid1, msgid2, plural, n, category) /* Insert the entry in the search tree. */ foundp = (struct known_translation_t **) tsearch (newp, &root, transcmp); - if (&newp != foundp) + if (__builtin_expect (&newp != foundp, 0)) /* The insert failed. */ free (newp); } @@ -751,7 +753,7 @@ _nl_find_msg (domain_file, msgid, index) /* Mark that we didn't succeed allocating a table. */ domain->conv_tab = (char **) -1; - if (domain->conv_tab == (char **) -1) + if (__builtin_expect (domain->conv_tab == (char **) -1, 0)) /* Nothing we can do, no more memory. */ goto converted; @@ -787,59 +789,61 @@ _nl_find_msg (domain_file, msgid, index) __libc_lock_lock (lock); + while (1) + { # ifdef _LIBC - { - size_t written; - int res; - - while ((res = __gconv (domain->conv, - &inbuf, inbuf + resultlen, - &outbuf, outbuf + freemem_size, - &written)) == __GCONV_OK) - { - if (res != __GCONV_FULL_OUTPUT) - goto out; - - /* We must resize the buffer. */ - freemem_size = MAX (2 * freemem_size, 4064); - freemem = (char *) malloc (freemem_size); - if (freemem == NULL) - goto out; - - inbuf = result; - outbuf = freemem + 4; - } - } + size_t non_reversible; + int res; + + res = __gconv (domain->conv, + &inbuf, inbuf + resultlen, + &outbuf, outbuf + freemem_size, + &non_reversible); + + if (res == __GCONV_OK || res == __GCONV_EMPTY_INPUT) + break; + + if (res != __GCONV_FULL_OUTPUT) + { + __libc_lock_unlock (lock); + goto converted; + } + + inbuf = result; # else # if HAVE_ICONV - for (;;) - { const char *inptr = (const char *) inbuf; size_t inleft = resultlen; char *outptr = (char *) outbuf; size_t outleft = freemem_size; if (iconv (domain->conv, &inptr, &inleft, &outptr, &outleft) - != (size_t)(-1)) + != (size_t) (-1)) { outbuf = (unsigned char *) outptr; break; } if (errno != E2BIG) - goto out; + { + __libc_lock_unlock (lock); + goto converted; + } +# endif +# endif /* We must resize the buffer. */ freemem_size = 2 * freemem_size; if (freemem_size < 4064) freemem_size = 4064; freemem = (char *) malloc (freemem_size); - if (freemem == NULL) - goto out; + if (__builtin_expect (freemem == NULL, 0)) + { + __libc_lock_unlock (lock); + goto converted; + } outbuf = freemem + 4; } -# endif -# endif /* We have now in our buffer a converted string. Put this into the table of conversions. */ @@ -848,10 +852,9 @@ _nl_find_msg (domain_file, msgid, index) /* Shrink freemem, but keep it aligned. */ freemem_size -= outbuf - freemem; freemem = outbuf; - freemem += freemem_size & 3; - freemem_size = freemem_size & ~3; + freemem += freemem_size & (__alignof__ (nls_uint32) - 1); + freemem_size = freemem_size & ~ (__alignof__ (nls_uint32) - 1); - out: __libc_lock_unlock (lock); } @@ -1070,15 +1073,19 @@ free_mem (void) struct binding *runp; for (runp = _nl_domain_bindings; runp != NULL; runp = runp->next) - if (runp->dirname != _nl_default_dirname) - /* Yes, this is a pointer comparison. */ - free (runp->dirname); + { + if (runp->dirname != _nl_default_dirname) + /* Yes, this is a pointer comparison. */ + free (runp->dirname); + if (runp->codeset != NULL) + free (runp->codeset); + } if (_nl_current_default_domain != _nl_default_default_domain) /* Yes, again a pointer comparison. */ free ((char *) _nl_current_default_domain); - /* Remove the search tree with the know translations. */ + /* Remove the search tree with the known translations. */ __tdestroy (root, free); } diff --git a/intl/finddomain.c b/intl/finddomain.c index 09f6a91fc2..dc215ad126 100644 --- a/intl/finddomain.c +++ b/intl/finddomain.c @@ -67,10 +67,11 @@ static struct loaded_l10nfile *_nl_loaded_domains; established bindings. */ struct loaded_l10nfile * internal_function -_nl_find_domain (dirname, locale, domainname) +_nl_find_domain (dirname, locale, domainname, domainbinding) const char *dirname; char *locale; const char *domainname; + struct binding *domainbinding; { struct loaded_l10nfile *retval; const char *language; @@ -109,7 +110,8 @@ _nl_find_domain (dirname, locale, domainname) be one data set in the list of loaded domains. */ retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname, strlen (dirname) + 1, 0, locale, NULL, NULL, - NULL, NULL, NULL, NULL, NULL, domainname, 0); + NULL, NULL, NULL, NULL, NULL, domainname, + domainbinding, 0); if (retval != NULL) { /* We know something about this locale. */ @@ -165,7 +167,8 @@ _nl_find_domain (dirname, locale, domainname) retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname, strlen (dirname) + 1, mask, language, territory, codeset, normalized_codeset, modifier, special, - sponsor, revision, domainname, 1); + sponsor, revision, domainname, domainbinding, + 1); if (retval == NULL) /* This means we are out of core. */ return NULL; diff --git a/intl/gettextP.h b/intl/gettextP.h index 26d9de0e77..8dcbaf2859 100644 --- a/intl/gettextP.h +++ b/intl/gettextP.h @@ -44,6 +44,12 @@ # define internal_function #endif +/* Tell the compiler when a conditional or integer expression is + almost always true or almost always false. */ +#ifndef HAVE_BUILTIN_EXPECT +# define __builtin_expect(expr, val) (expr) +#endif + #ifndef W # define W(flag, data) ((flag) ? SWAP (data) : (data)) #endif @@ -137,6 +143,7 @@ struct binding { struct binding *next; char *dirname; + char *codeset; #ifdef __GNUC__ char domainname[0]; #else @@ -148,7 +155,8 @@ extern int _nl_msg_cat_cntr; struct loaded_l10nfile *_nl_find_domain PARAMS ((const char *__dirname, char *__locale, - const char *__domainname)) + const char *__domainname, + struct binding *__domainbinding)) internal_function; void _nl_load_domain PARAMS ((struct loaded_l10nfile *__domain)) internal_function; diff --git a/intl/l10nflist.c b/intl/l10nflist.c index 01e7e74956..4cd6615bac 100644 --- a/intl/l10nflist.c +++ b/intl/l10nflist.c @@ -175,7 +175,7 @@ pop (x) struct loaded_l10nfile * _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language, territory, codeset, normalized_codeset, modifier, special, - sponsor, revision, filename, do_allocate) + sponsor, revision, filename, domainbinding, do_allocate) struct loaded_l10nfile **l10nfile_list; const char *dirlist; size_t dirlist_len; @@ -189,6 +189,7 @@ _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language, const char *sponsor; const char *revision; const char *filename; + struct binding *domainbinding; int do_allocate; { char *abs_filename; @@ -309,6 +310,7 @@ _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language, return NULL; retval->filename = abs_filename; + retval->domainbinding = domainbinding; retval->decided = (__argz_count (dirlist, dirlist_len) != 1 || ((mask & XPG_CODESET) != 0 && (mask & XPG_NORM_CODESET) != 0)); @@ -344,7 +346,8 @@ _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language, = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1, cnt, language, territory, codeset, normalized_codeset, modifier, special, - sponsor, revision, filename, 1); + sponsor, revision, filename, domainbinding, + 1); } retval->successor[entries] = NULL; diff --git a/intl/libintl.h b/intl/libintl.h index 0f147228df..967a8cafcd 100644 --- a/intl/libintl.h +++ b/intl/libintl.h @@ -78,6 +78,11 @@ extern char *textdomain (__const char *__domainname) __THROW; extern char *bindtextdomain (__const char *__domainname, __const char *__dirname) __THROW; +/* Specify the character encoding in which the messages from the + DOMAINNAME message catalog will be returned. */ +extern char *bind_textdomain_codeset (__const char *__domainname, + __const char *__codeset) __THROW; + /* Optimized version of the function above. */ #if defined __OPTIMIZE__ diff --git a/intl/loadinfo.h b/intl/loadinfo.h index 585ed11c5e..1013470f43 100644 --- a/intl/loadinfo.h +++ b/intl/loadinfo.h @@ -32,6 +32,12 @@ # define internal_function #endif +/* Tell the compiler when a conditional or integer expression is + almost always true or almost always false. */ +#ifndef HAVE_BUILTIN_EXPECT +# define __builtin_expect(expr, val) (expr) +#endif + /* Encoding of locale name parts. */ #define CEN_REVISION 1 #define CEN_SPONSOR 2 @@ -49,6 +55,7 @@ struct loaded_l10nfile { const char *filename; + struct binding *domainbinding; int decided; const void *data; @@ -73,7 +80,8 @@ _nl_make_l10nflist PARAMS ((struct loaded_l10nfile **l10nfile_list, const char *normalized_codeset, const char *modifier, const char *special, const char *sponsor, const char *revision, - const char *filename, int do_allocate)); + const char *filename, + struct binding *domainbinding, int do_allocate)); extern const char *_nl_expand_alias PARAMS ((const char *name)); diff --git a/intl/loadmsgcat.c b/intl/loadmsgcat.c index 75265c84a8..4009525fe8 100644 --- a/intl/loadmsgcat.c +++ b/intl/loadmsgcat.c @@ -16,11 +16,19 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +/* Tell glibc's <string.h> to provide a prototype for mempcpy(). + This must come before <config.h> because <config.h> may include + <features.h>, and once <features.h> has been included, it's too late. */ +#ifndef _GNU_SOURCE +# define _GNU_SOURCE 1 +#endif + #ifdef HAVE_CONFIG_H # include <config.h> #endif #include <ctype.h> +#include <errno.h> #include <fcntl.h> #include <sys/types.h> #include <sys/stat.h> @@ -30,9 +38,6 @@ #endif #if defined HAVE_STRING_H || defined _LIBC -# ifndef _GNU_SOURCE -# define _GNU_SOURCE 1 -# endif # include <string.h> #else # include <strings.h> @@ -138,9 +143,9 @@ _nl_load_domain (domain_file) return; /* We must know about the size of the file. */ - if (fstat (fd, &st) != 0 - || (size = (size_t) st.st_size) != st.st_size - || size < sizeof (struct mo_file_header)) + if (__builtin_expect (fstat (fd, &st) != 0, 0) + || __builtin_expect ((size = (size_t) st.st_size) != st.st_size, 0) + || __builtin_expect (size < sizeof (struct mo_file_header), 0)) { /* Something went wrong. */ close (fd); @@ -153,7 +158,7 @@ _nl_load_domain (domain_file) data = (struct mo_file_header *) mmap (NULL, size, PROT_READ, MAP_PRIVATE, fd, 0); - if (data != (struct mo_file_header *) -1) + if (__builtin_expect (data != (struct mo_file_header *) -1, 1)) { /* mmap() call was successful. */ close (fd); @@ -177,12 +182,15 @@ _nl_load_domain (domain_file) do { long int nb = (long int) read (fd, read_ptr, to_read); - if (nb == -1) + if (nb <= 0) { +#ifdef EINTR + if (nb == -1 && errno == EINTR) + continue; +#endif close (fd); return; } - read_ptr += nb; to_read -= nb; } @@ -193,7 +201,8 @@ _nl_load_domain (domain_file) /* Using the magic number we can test whether it really is a message catalog file. */ - if (data->magic != _MAGIC && data->magic != _MAGIC_SWAPPED) + if (__builtin_expect (data->magic != _MAGIC && data->magic != _MAGIC_SWAPPED, + 0)) { /* The magic number is wrong: not a message catalog file. */ #ifdef HAVE_MMAP @@ -254,14 +263,13 @@ _nl_load_domain (domain_file) domain->conv = (iconv_t) -1; # endif #endif + domain->conv_tab = NULL; nullentry = _nl_find_msg (domain_file, "", 0); if (nullentry != NULL) { +#if defined _LIBC || HAVE_ICONV const char *charsetstr; - const char *plural; - const char *nplurals; -#if defined _LIBC || HAVE_ICONV charsetstr = strstr (nullentry, "charset="); if (charsetstr != NULL) { @@ -282,12 +290,33 @@ _nl_load_domain (domain_file) /* The output charset should normally be determined by the locale. But sometimes the locale is not used or not correctly - set up so we provide a possibility to override this. */ - outcharset = getenv ("OUTPUT_CHARSET"); - if (outcharset == NULL || outcharset[0] == '\0') - outcharset = (*_nl_current[LC_CTYPE])->values[_NL_ITEM_INDEX (CODESET)].string; + set up, so we provide a possibility for the user to override + this. Moreover, the value specified through + bind_textdomain_codeset overrides both. */ + if (domain_file->domainbinding != NULL + && domain_file->domainbinding->codeset != NULL) + outcharset = domain_file->domainbinding->codeset; + else + { + outcharset = getenv ("OUTPUT_CHARSET"); + if (outcharset == NULL || outcharset[0] == '\0') + { +# ifdef _LIBC + outcharset = (*_nl_current[LC_CTYPE])->values[_NL_ITEM_INDEX (CODESET)].string; +# else +# if HAVE_ICONV + extern const char *locale_charset (void); + outcharset = locale_charset (); + if (outcharset == NULL) + outcharset = ""; +# endif +# endif + } + } # ifdef _LIBC + outcharset = norm_add_slashes (outcharset); + charset = norm_add_slashes (charset); if (__gconv_open (outcharset, charset, &domain->conv, GCONV_AVOID_NOCONV) != __GCONV_OK) @@ -299,19 +328,18 @@ _nl_load_domain (domain_file) # endif } #endif /* _LIBC || HAVE_ICONV */ + } + + /* Also look for a plural specification. */ + if (nullentry != NULL) + { + const char *plural; + const char *nplurals; - /* Also look for a plural specification. */ plural = strstr (nullentry, "plural="); nplurals = strstr (nullentry, "nplurals="); if (plural == NULL || nplurals == NULL) - { - /* By default we are using the Germanic form: singular form only - for `one', the plural form otherwise. Yes, this is also what - English is using since English is a Germanic language. */ - no_plural: - domain->plural = &germanic_plural; - domain->nplurals = 2; - } + goto no_plural; else { /* First get the number. */ @@ -336,6 +364,15 @@ _nl_load_domain (domain_file) domain->plural = args.res; } } + else + { + /* By default we are using the Germanic form: singular form only + for `one', the plural form otherwise. Yes, this is also what + English is using since English is a Germanic language. */ + no_plural: + domain->plural = &germanic_plural; + domain->nplurals = 2; + } } diff --git a/intl/localealias.c b/intl/localealias.c index d2b5ae8895..57c693dcde 100644 --- a/intl/localealias.c +++ b/intl/localealias.c @@ -16,6 +16,13 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +/* Tell glibc's <string.h> to provide a prototype for mempcpy(). + This must come before <config.h> because <config.h> may include + <features.h>, and once <features.h> has been included, it's too late. */ +#ifndef _GNU_SOURCE +# define _GNU_SOURCE 1 +#endif + #ifdef HAVE_CONFIG_H # include <config.h> #endif @@ -53,9 +60,6 @@ void free (); #endif #if defined HAVE_STRING_H || defined _LIBC -# ifndef _GNU_SOURCE -# define _GNU_SOURCE 1 -# endif # include <string.h> #else # include <strings.h> @@ -158,7 +162,7 @@ static size_t maxmap; /* Prototypes for local functions. */ static size_t read_alias_file PARAMS ((const char *fname, int fname_len)) internal_function; -static void extend_alias_table PARAMS ((void)); +static int extend_alias_table PARAMS ((void)); static int alias_compare PARAMS ((const struct alias_map *map1, const struct alias_map *map2)); @@ -326,7 +330,11 @@ read_alias_file (fname, fname_len) *cp++ = '\0'; if (nmap >= maxmap) - extend_alias_table (); + if (__builtin_expect (extend_alias_table (), 0)) + { + FREE_BLOCKS (block_list); + return added; + } alias_len = strlen (alias) + 1; value_len = strlen (value) + 1; @@ -374,7 +382,7 @@ read_alias_file (fname, fname_len) } -static void +static int extend_alias_table () { size_t new_size; @@ -385,10 +393,11 @@ extend_alias_table () * sizeof (struct alias_map))); if (new_map == NULL) /* Simply don't extend: we don't have any more core. */ - return; + return -1; map = new_map; maxmap = new_size; + return 0; } diff --git a/libio/stdio.h b/libio/stdio.h index 00b7d879d6..b43826e037 100644 --- a/libio/stdio.h +++ b/libio/stdio.h @@ -1,5 +1,5 @@ /* Define ISO C stdio on top of C++ iostreams. - Copyright (C) 1991, 94, 95, 96, 97, 98, 99 Free Software Foundation, Inc. + Copyright (C) 1991, 1994-1999, 2000 Free Software Foundation, Inc. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as @@ -481,7 +481,7 @@ typedef __off64_t off64_t; #ifndef __USE_FILE_OFFSET64 -# ifdef __USE_UNIX98 +# ifdef __USE_LARGEFILE /* Seek to a certain position on STREAM. */ extern int fseeko (FILE *__stream, __off_t __off, int __whence) __THROW; /* Return the current position of STREAM. */ @@ -495,7 +495,7 @@ extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos) extern int fsetpos (FILE *__stream, __const fpos_t *__pos) __THROW; #else # ifdef __REDIRECT -# ifdef __USE_UNIX98 +# ifdef __USE_LARGEFILE extern int __REDIRECT (fseeko, (FILE *__stream, __off64_t __off, int __whence) __THROW, fseeko64); @@ -507,7 +507,7 @@ extern int __REDIRECT (fsetpos, (FILE *__stream, __const fpos_t *__pos) __THROW, fsetpos64); # else -# ifdef __USE_UNIX98 +# ifdef __USE_LARGEFILE # define fseeko fseeko64 # define ftello ftello64 # endif @@ -517,10 +517,8 @@ extern int __REDIRECT (fsetpos, #endif #ifdef __USE_LARGEFILE64 -# ifdef __USE_UNIX98 extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence) __THROW; extern __off64_t ftello64 (FILE *__stream) __THROW; -# endif extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos) __THROW; extern int fsetpos64 (FILE *__stream, __const fpos64_t *__pos) __THROW; diff --git a/manual/intro.texi b/manual/intro.texi index b3c1b05614..b133560ac2 100644 --- a/manual/intro.texi +++ b/manual/intro.texi @@ -674,7 +674,7 @@ signal is delivered, and how to prevent signals from arriving during critical sections of your program. @item -@ref{Process Startup}, tells how your programs can access their +@ref{Program Basics}, tells how your programs can access their command-line arguments and environment variables. @item diff --git a/manual/message.texi b/manual/message.texi index 446e6d7b56..455b8e02e9 100644 --- a/manual/message.texi +++ b/manual/message.texi @@ -764,13 +764,15 @@ basic functionally is equivalent. There are functions of the following categories: @menu -* Translation with gettext:: What has to be done to translate a message. -* Locating gettext catalog:: How to determine which catalog to be used. -* Advanced gettext functions:: Additional functions for more complicated - situations. -* GUI program problems:: How to use @code{gettext} in GUI programs. -* Using gettextized software:: The possibilities of the user to influence - the way @code{gettext} works. +* Translation with gettext:: What has to be done to translate a message. +* Locating gettext catalog:: How to determine which catalog to be used. +* Advanced gettext functions:: Additional functions for more complicated + situations. +* Charset conversion in gettext:: How to specify the output character set + @code{gettext} uses. +* GUI program problems:: How to use @code{gettext} in GUI programs. +* Using gettextized software:: The possibilities of the user to influence + the way @code{gettext} works. @end menu @node Translation with gettext @@ -1045,7 +1047,7 @@ running program does not depend on the user setting an environment variable. The @code{bindtextdomain} function can be used several times and if the -@var{domainname} argument is different the previously bounded domains +@var{domainname} argument is different the previously bound domains will not be overwritten. If the program which wish to use @code{bindtextdomain} at some point of @@ -1359,6 +1361,52 @@ Slovenian @end table +@node Charset conversion in gettext +@subsubsection How to specify the output character set @code{gettext} uses + +@code{gettext} not only looks up a translation in a message catalog. It +also converts the translation on the fly to the desired output character +set. This is useful if the user is working in a different character set +than the translator who created the message catalog, because it avoids +distributing variants of message catalogs which differ only in the +character set. + +The output character set is, by default, the value of @code{nl_langinfo +(CODESET)}, which depends on the @code{LC_CTYPE} part of the current +locale. But programs which store strings in a locale independent way +(e.g. UTF-8) can request that @code{gettext} and related functions +return the translations in that encoding, by use of the +@code{bind_textdomain_codeset} function. + +Note that the @var{msgid} argument to @code{gettext} is not subject to +character set conversion. Also, when @code{gettext} does not find a +translation for @var{msgid}, it returns @var{msgid} unchanged -- +independently of the current output character set. It is therefore +recommended that all @var{msgid}s be US-ASCII strings. + +@comment libintl.h +@comment GNU +@deftypefun {char *} bind_textdomain_codeset (const char *@var{domainname}, const char *@var{codeset}) +The @code{bind_textdomain_codeset} function can be used to specify the +output character set for message catalogs for domain @var{domainname}. + +If the @var{codeset} parameter is the null pointer, +@code{bind_textdomain_codeset} returns the currently selected codeset +for the domain with the name @var{domainname}. It returns @code{NULL} if +no codeset has yet been selected. + +The @code{bind_textdomain_codeset} function can be used several times. +If used multiple times with the same @var{domainname} argument, the +later call overrides the settings made by the earlier one. + +The @code{bind_textdomain_codeset} function returns a pointer to a +string containing the name of the selected codeset. The string is +allocated internally in the function and must not be changed by the +user. If the system went out of core during the execution of +@code{bind_textdomain_codeset}, the return value is @code{NULL} and the +global variable @var{errno} is set accordingly. @end deftypefun + + @node GUI program problems @subsubsection How to use @code{gettext} in GUI programs @@ -1589,7 +1637,7 @@ to work: @{ textdomain ("test-package"); bindtextdomain ("test-package", "/usr/local/share/locale"); - puts (gettext ("Hello, world!"); + puts (gettext ("Hello, world!")); @} @end smallexample diff --git a/manual/process.texi b/manual/process.texi index b9f255117d..aa5f7270d4 100644 --- a/manual/process.texi +++ b/manual/process.texi @@ -1,4 +1,4 @@ -@node Processes, Job Control, Process Startup, Top +@node Processes, Job Control, Program Basics, Top @c %MENU% How to create processes and run other programs @chapter Processes @@ -276,6 +276,9 @@ This section describes the @code{exec} family of functions, for executing a file as a process image. You can use these functions to make a child process execute a new program after it has been forked. +To see the effects of @code{exec} from the point of view of the called +program, @xref{Program Basics}. + @pindex unistd.h The functions in this family differ in how you specify the arguments, but otherwise they all do the same thing. They are declared in the diff --git a/manual/signal.texi b/manual/signal.texi index 95e7a363c0..94972fa43d 100644 --- a/manual/signal.texi +++ b/manual/signal.texi @@ -1,4 +1,4 @@ -@node Signal Handling, Process Startup, Non-Local Exits, Top +@node Signal Handling, Program Basics, Non-Local Exits, Top @c %MENU% How to send, block, and handle signals @chapter Signal Handling diff --git a/manual/startup.texi b/manual/startup.texi index 27459989cb..8f4fd23bc9 100644 --- a/manual/startup.texi +++ b/manual/startup.texi @@ -1,25 +1,43 @@ -@node Process Startup, Processes, Signal Handling, Top +@node Program Basics, Processes, Signal Handling, Top @c %MENU% Writing the beginning and end of your program -@chapter Process Startup and Termination +@chapter The Basic Program/System Interface @cindex process +@cindex program +@cindex address space +@cindex thread of control @dfn{Processes} are the primitive units for allocation of system resources. Each process has its own address space and (usually) one thread of control. A process executes a program; you can have multiple processes executing the same program, but each process has its own copy of the program within its own address space and executes it -independently of the other copies. - -This chapter explains what your program should do to handle the startup -of a process, to terminate its process, and to receive information -(arguments and the environment) from the parent process. +independently of the other copies. Though it may have multiple threads +of control within the same program and a program may be composed of +multiple logically separate modules, a process always executes exactly +one program. + +Note that we are using a specific definition of ``program'' for the +purposes of this manual, which corresponds to a common definition in the +context of Unix system. In popular usage, ``program'' enjoys a much +broader definition; it can refer for example to a system's kernel, an +editor macro, a complex package of software, or a discrete section of +code executing within a process. + +Writing the program is what this manual is all about. This chapter +explains the most basic interface between your program and the system +that runs, or calls, it. This includes passing of parameters (arguments +and environment) from the system, requesting basic services from the +system, and telling the system the program is done. + +A program starts another program with the @code{exec} family of system calls. +This chapter looks at program startup from the execee's point of view. To +see the event from the execor's point of view, @xref{Executing a File}. @menu * Program Arguments:: Parsing your program's command-line arguments. -* Environment Variables:: How to access parameters inherited from - a parent process. -* Program Termination:: How to cause a process to terminate and - return status information to its parent. +* Environment Variables:: Less direct parameters affecting your program +* System Calls:: Requesting service from the system +* Program Termination:: Telling the system you're done; return status @end menu @node Program Arguments @@ -72,7 +90,7 @@ int main (int @var{argc}, char *@var{argv}[], char *@var{envp}) @end smallexample The first two arguments are just the same. The third argument -@var{envp} gives the process's environment; it is the same as the value +@var{envp} gives the program's environment; it is the same as the value of @code{environ}. @xref{Environment Variables}. POSIX.1 does not allow this three-argument form, so to be portable it is best to write @code{main} to take two arguments, and use the value of @code{environ}. @@ -438,7 +456,7 @@ this lets the user specify the value. This is the name that the user used to log in. Since the value in the environment can be tweaked arbitrarily, this is not a reliable way to -identify the user who is running a process; a function like +identify the user who is running a program; a function like @code{getlogin} (@pxref{Who Logged In}) is better for that purpose. For most purposes, it is better to use @code{LOGNAME}, precisely because @@ -562,6 +580,113 @@ reordering of command line arguments by @code{getopt} and @c !!! GNU also has COREFILE, CORESERVER, EXECSERVERS @end table +@node System Calls +@section System Calls + +@cindex system call +A system call is a request for service that a program makes of the +kernel. The service is generally something that only the kernel has +the privilege to do, such as doing I/O. Programmers don't normally +need to be concerned with system calls because there are functions in +the GNU C library to do virtually everything that system calls do. +These functions work by making system calls themselves. For example, +there is a system call that changes the permissions of a file, but +you don't need to know about it because you can just use the GNU C +library's @code{chmod} function. + +@cindex kernel call +System calls are sometimes called kernel calls. + +However, there are times when you want to make a system call explicitly, +and for that, the GNU C library provides the @code{syscall} function. +@code{syscall} is harder to use and less portable than functions like +@code{chmod}, but easier and more portable than coding the system call +in assembler instructions. + +@code{syscall} is most useful when you are working with a system call +which is special to your system or is newer than the GNU C library you +are using. @code{syscall} is implemented in an entirely generic way; +the function does not know anything about what a particular system +call does or even if it is valid. + +The description of @code{syscall} in this section assumes a certain +protocol for system calls on the various platforms on which the GNU C +library runs. That protocol is not defined by any strong authority, but +we won't describe it here either because anyone who is coding +@code{syscall} probably won't accept anything less than kernel and C +library source code as a specification of the interface between them +anyway. + + +@code{syscall} is declared in @file{unistd.h}. + +@comment unistd.h +@comment ??? +@deftypefun long int syscall (long int @var{sysno}, ...) + +@code{syscall} performs a generic system call. + +@cindex system call number +@var{sysno} is the system call number. Each kind of system call is +identified by a number. Macros for all the possible system call numbers +are defined in @file{sys/syscall.h} + +The remaining arguments are the arguments for the system call, in +order, and their meanings depend on the kind of system call. Each kind +of system call has a definite number of arguments, from zero to five. +If you code more arguments than the system call takes, the extra ones to +the right are ignored. + +The return value is the return value from the system call, unless the +system call failed. In that case, @code{syscall} returns @code{-1} and +sets @code{errno} to an error code that the system call returned. Note +that system calls do not return @code{-1} when they succeed. +@cindex errno + +If you specify an invalid @var{sysno}, @code{syscall} returns @code{-1} +with @code{errno} = @code{ENOSYS}. + +Example: + +@smallexample + +#include <unistd.h> +#include <sys/syscall.h> +#include <errno.h> + +... + +int rc; + +rc = syscall(SYS_chmod, "/etc/passwd", 0444); + +if (rc == -1) + fprintf(stderr, "chmod failed, errno = %d\n", errno); + +@end smallexample + +This, if all the compatibility stars are aligned, is equivalent to the +following preferable code: + +@smallexample + +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> + +... + +int rc; + +rc = chmod("/etc/passwd", 0444); +if (rc == -1) + fprintf(stderr, "chmod failed, errno = %d\n", errno); + +@end smallexample + +@end deftypefun + + @node Program Termination @section Program Termination @cindex program termination @@ -595,15 +720,19 @@ a signal that kills the program. @node Normal Termination @subsection Normal Termination -A process terminates normally when the program calls @code{exit}. -Returning from @code{main} is equivalent to calling @code{exit}, and -the value that @code{main} returns is used as the argument to @code{exit}. +A process terminates normally when its program signals it is done by +calling @code{exit}. Returning from @code{main} is equivalent to +calling @code{exit}, and the value that @code{main} returns is used as +the argument to @code{exit}. @comment stdlib.h @comment ISO @deftypefun void exit (int @var{status}) -The @code{exit} function terminates the process with status -@var{status}. This function does not return. +The @code{exit} function tells the system that the program is done, which +causes it to terminate the process. + +@var{status} is the program's exit status, which becomes part of the +process' termination status. This function does not return. @end deftypefun Normal termination causes the following actions: @@ -695,6 +824,12 @@ kinds of "non-success". For example, @code{diff} uses status value mean that there was difficulty in opening the files. @end deftypevr +Don't confuse a program's exit status with a process' termination status. +There are lots of ways a process can terminate besides having it's program +finish. In the event that the process termination @emph{is} caused by program +termination (i.e. @code{exit}), though, the program's exit status becomes +part of the process' termination status. + @node Cleanups on Exit @subsection Cleanups on Exit @@ -796,8 +931,8 @@ This function was introduced in @w{ISO C99} and is declared in @file{stdlib.h}. @end deftypefun -When a process terminates for any reason---either by an explicit -termination call, or termination as a result of a signal---the +When a process terminates for any reason---either because the program +terminates, or as a result of a signal---the following things happen: @itemize @bullet @@ -807,9 +942,11 @@ Note that streams are not flushed automatically when the process terminates; see @ref{I/O on Streams}. @item -The low-order 8 bits of the return status code are saved to be reported -back to the parent process via @code{wait} or @code{waitpid}; see -@ref{Process Completion}. +A process exit status is saved to be reported back to the parent process +via @code{wait} or @code{waitpid}; see @ref{Process Completion}. If the +program exited, this status includes as its low-order 8 bits the program +exit status. + @item Any child processes of the process being terminated are assigned a new @@ -3227,11 +3227,11 @@ msgstr "mcheck_status falso, a librería ten erros\n" #: sunrpc/pmap_rmt.c:185 msgid "broadcast: ioctl (get interface configuration)" -msgstr "multidifusión: ioctl (obte-la configuración do interfaz)" +msgstr "multidifusión: ioctl (obte-la configuración da interface)" #: sunrpc/pmap_rmt.c:194 msgid "broadcast: ioctl (get interface flags)" -msgstr "multidifusión: ioctl (obte-los parámetros do interfaz)" +msgstr "multidifusión: ioctl (obte-los parámetros da interface)" #: login/programs/request.c:167 msgid "buffer overflow" @@ -3739,7 +3739,7 @@ msgstr "xerar un perfil plano con contas e tempos" #: sunrpc/get_myaddr.c:77 msgid "get_myaddress: ioctl (get interface configuration)" -msgstr "get_myaddress: ioctl (obte-la configuración do interfaz)" +msgstr "get_myaddress: ioctl (obte-la configuración da interface)" #: nss/getent.c:54 msgid "getent - get entries from administrative database." diff --git a/resolv/resolv.h b/resolv/resolv.h index eadacaef3e..6c710ecafc 100644 --- a/resolv/resolv.h +++ b/resolv/resolv.h @@ -266,7 +266,6 @@ extern struct __res_state _res; #define p_query __p_query #define res_close __res_close #define res_isourserver __res_isourserver -#define res_querydomain __res_querydomain #define res_send __res_send __BEGIN_DECLS diff --git a/sysdeps/generic/dl-environ.c b/sysdeps/generic/dl-environ.c index 433102757c..19637917a5 100644 --- a/sysdeps/generic/dl-environ.c +++ b/sysdeps/generic/dl-environ.c @@ -1,5 +1,5 @@ -/*Environment handling for dynamic loader. - Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. +/* Environment handling for dynamic loader. + Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -55,7 +55,8 @@ unsetenv (const char *name) const size_t len = strlen (name); char **ep; - for (ep = _environ; *ep != NULL; ++ep) + ep = _environ; + while (*ep != NULL) if (!strncmp (*ep, name, len) && (*ep)[len] == '=') { /* Found it. Remove this pointer by moving later ones back. */ @@ -66,4 +67,6 @@ unsetenv (const char *name) while (*dp++); /* Continue the loop in case NAME appears again. */ } + else + ++ep; } diff --git a/wcsmbs/wcsmbsload.c b/wcsmbs/wcsmbsload.c index 719bd1b5cf..42678527ef 100644 --- a/wcsmbs/wcsmbsload.c +++ b/wcsmbs/wcsmbsload.c @@ -132,34 +132,6 @@ getfct (const char *to, const char *from) }) -/* The gconv functions expects the name to be complete, including the - trailing shashes if necessary. */ -#define norm_add_slashes(str) \ - ({ \ - const char *cp = str; \ - char *result; \ - char *tmp; \ - size_t cnt = 0; \ - \ - while (*cp != '\0') \ - if (*cp++ == '/') \ - ++cnt; \ - \ - tmp = result = alloca (cp - str + 3); \ - cp = str; \ - while (*cp != '\0') \ - *tmp++ = _toupper (*cp++); \ - if (cnt < 2) \ - { \ - *tmp++ = '/'; \ - if (cnt < 1) \ - *tmp++ = '/'; \ - } \ - *tmp = '\0'; \ - result; \ - }) - - /* We must modify global data. */ __libc_lock_define_initialized (static, lock) |