[Buildroot] svn commit: trunk/buildroot/package/busybox
jacmet at uclibc.org
jacmet at uclibc.org
Mon Sep 22 11:54:17 UTC 2008
Author: jacmet
Date: 2008-09-22 04:54:17 -0700 (Mon, 22 Sep 2008)
New Revision: 23453
Log:
busybox: more 1.12.0 patches
Added:
trunk/buildroot/package/busybox/busybox-1.12.0-crontab_vi.patch
trunk/buildroot/package/busybox/busybox-1.12.0-grep.patch
trunk/buildroot/package/busybox/busybox-1.12.0-lineedit.patch
Modified:
trunk/buildroot/package/busybox/busybox-1.12.0-insmod.patch
Changeset:
Added: trunk/buildroot/package/busybox/busybox-1.12.0-crontab_vi.patch
===================================================================
--- trunk/buildroot/package/busybox/busybox-1.12.0-crontab_vi.patch (rev 0)
+++ trunk/buildroot/package/busybox/busybox-1.12.0-crontab_vi.patch 2008-09-22 11:54:17 UTC (rev 23453)
@@ -0,0 +1,164 @@
+--- busybox-1.12.0/editors/vi.c Wed Aug 6 00:56:11 2008
++++ busybox-1.12.0-crontab_vi/editors/vi.c Sun Sep 21 17:30:47 2008
+@@ -147,10 +147,10 @@
+ #endif
+
+ smallint editing; // >0 while we are editing a file
+- // [code audit says "can be 0 or 1 only"]
++ // [code audit says "can be 0, 1 or 2 only"]
+ smallint cmd_mode; // 0=command 1=insert 2=replace
+ int file_modified; // buffer contents changed (counter, not flag!)
+- int last_file_modified; // = -1;
++ int last_file_modified; // = -1;
+ int fn_start; // index of first cmd line file name
+ int save_argc; // how many file names on cmd line
+ int cmdcnt; // repetition count
+@@ -623,7 +623,7 @@
+ // These are commands that change text[].
+ // Remember the input for the "." command
+ if (!adding2q && ioq_start == NULL
+- && strchr(modifying_cmds, c)
++ && c != '\0' && strchr(modifying_cmds, c)
+ ) {
+ start_new_cmd_q(c);
+ }
+@@ -645,8 +645,8 @@
+ }
+ //-------------------------------------------------------------------
+
+- place_cursor(rows, 0, FALSE); // go to bottom of screen
+- clear_to_eol(); // Erase to end of line
++ place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
++ clear_to_eol(); // erase to end of line
+ cookmode();
+ #undef cur_line
+ }
+@@ -2009,9 +2009,9 @@
+ {
+ // get buffer for new cmd
+ // if there is a current cmd count put it in the buffer first
+- if (cmdcnt > 0)
++ if (cmdcnt > 0) {
+ lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
+- else { // just save char c onto queue
++ } else { // just save char c onto queue
+ last_modifying_cmd[0] = c;
+ lmc_len = 1;
+ }
+@@ -2157,21 +2157,21 @@
+ //----- Come here when we get a continue signal -------------------
+ static void cont_sig(int sig UNUSED_PARAM)
+ {
+- rawmode(); // terminal to "raw"
+- last_status_cksum = 0; // force status update
+- redraw(TRUE); // re-draw the screen
++ rawmode(); // terminal to "raw"
++ last_status_cksum = 0; // force status update
++ redraw(TRUE); // re-draw the screen
+
+ signal(SIGTSTP, suspend_sig);
+ signal(SIGCONT, SIG_DFL);
+- kill(my_pid, SIGCONT);
++ kill(my_pid, SIGCONT); // huh? why? we are already "continued"...
+ }
+
+ //----- Come here when we get a Suspend signal -------------------
+ static void suspend_sig(int sig UNUSED_PARAM)
+ {
+- place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
+- clear_to_eol(); // Erase to end of line
+- cookmode(); // terminal to "cooked"
++ place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
++ clear_to_eol(); // erase to end of line
++ cookmode(); // terminal to "cooked"
+
+ signal(SIGCONT, cont_sig);
+ signal(SIGTSTP, SIG_DFL);
+@@ -2247,18 +2247,20 @@
+
+ fflush(stdout);
+ n = chars_to_parse;
+- // get input from User- are there already input chars in Q?
++ // get input from User - are there already input chars in Q?
+ if (n <= 0) {
+ // the Q is empty, wait for a typed char
++ again:
+ n = safe_read(STDIN_FILENO, readbuffer, sizeof(readbuffer));
+- if (n < 0) {
+- if (errno == EBADF || errno == EFAULT || errno == EINVAL
+- || errno == EIO)
+- editing = 0; // want to exit
+- errno = 0;
++ if (n <= 0) {
++ place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
++ clear_to_eol(); // erase to end of line
++ cookmode(); // terminal to "cooked"
++ bb_error_msg_and_die("can't read user input");
+ }
+- if (n <= 0)
+- return 0; // error
++ /* elsewhere we can get very confused by NULs */
++ if (readbuffer[0] == '\0')
++ goto again;
+ if (readbuffer[0] == 27) {
+ // This is an ESC char. Is this Esc sequence?
+ // Could be bare Esc key. See if there are any
+--- busybox-1.12.0/miscutils/crontab.c Wed Aug 6 00:56:08 2008
++++ busybox-1.12.0-crontab_vi/miscutils/crontab.c Sun Sep 21 17:30:47 2008
+@@ -93,6 +93,7 @@
+ char *new_fname;
+ char *user_name; /* -u USER */
+ int fd;
++ int src_fd;
+ int opt_ler;
+
+ /* file [opts] Replace crontab from file
+@@ -144,15 +145,15 @@
+ bb_show_usage();
+
+ /* Read replacement file under user's UID/GID/group vector */
++ src_fd = STDIN_FILENO;
+ if (!opt_ler) { /* Replace? */
+ if (!argv[0])
+ bb_show_usage();
+ if (NOT_LONE_DASH(argv[0])) {
+- fd = open_as_user(pas, argv[0]);
+- if (fd < 0)
++ src_fd = open_as_user(pas, argv[0]);
++ if (src_fd < 0)
+ bb_error_msg_and_die("user %s cannot read %s",
+ pas->pw_name, argv[0]);
+- xmove_fd(fd, STDIN_FILENO);
+ }
+ }
+
+@@ -180,23 +181,23 @@
+ tmp_fname = xasprintf("%s.%u", crontab_dir, (unsigned)getpid());
+ /* No O_EXCL: we don't want to be stuck if earlier crontabs
+ * were killed, leaving stale temp file behind */
+- fd = xopen3(tmp_fname, O_RDWR|O_CREAT|O_TRUNC, 0600);
+- xmove_fd(fd, STDIN_FILENO);
+- fchown(STDIN_FILENO, pas->pw_uid, pas->pw_gid);
++ src_fd = xopen3(tmp_fname, O_RDWR|O_CREAT|O_TRUNC, 0600);
++ fchown(src_fd, pas->pw_uid, pas->pw_gid);
+ fd = open(pas->pw_name, O_RDONLY);
+ if (fd >= 0) {
+- bb_copyfd_eof(fd, STDIN_FILENO);
++ bb_copyfd_eof(fd, src_fd);
+ close(fd);
++ xlseek(src_fd, 0, SEEK_SET);
+ }
++ close_on_exec_on(src_fd); /* don't want editor to see this fd */
+ edit_file(pas, tmp_fname);
+- xlseek(STDIN_FILENO, 0, SEEK_SET);
+ /* fall through */
+
+ case 0: /* Replace (no -l, -e, or -r were given) */
+ new_fname = xasprintf("%s.new", pas->pw_name);
+ fd = open(new_fname, O_WRONLY|O_CREAT|O_TRUNC|O_APPEND, 0600);
+ if (fd >= 0) {
+- bb_copyfd_eof(STDIN_FILENO, fd);
++ bb_copyfd_eof(src_fd, fd);
+ close(fd);
+ xrename(new_fname, pas->pw_name);
+ } else {
Added: trunk/buildroot/package/busybox/busybox-1.12.0-grep.patch
===================================================================
--- trunk/buildroot/package/busybox/busybox-1.12.0-grep.patch (rev 0)
+++ trunk/buildroot/package/busybox/busybox-1.12.0-grep.patch 2008-09-22 11:54:17 UTC (rev 23453)
@@ -0,0 +1,78 @@
+--- busybox-1.12.0/findutils/grep.c Sat Aug 9 18:14:59 2008
++++ busybox-1.12.0-grep/findutils/grep.c Fri Sep 19 23:33:15 2008
+@@ -87,7 +87,11 @@
+
+ struct globals {
+ int max_matches;
++#if !ENABLE_EXTRA_COMPAT
+ int reflags;
++#else
++ RE_TRANSLATE_TYPE case_fold; /* RE_TRANSLATE_TYPE is [[un]signed] char* */
++#endif
+ smalluint invert_search;
+ smalluint print_filename;
+ smalluint open_errors;
+@@ -110,7 +114,19 @@
+ }; \
+ } while (0)
+ #define max_matches (G.max_matches )
++#if !ENABLE_EXTRA_COMPAT
+ #define reflags (G.reflags )
++#else
++#define case_fold (G.case_fold )
++/* http://www.delorie.com/gnu/docs/regex/regex_46.html */
++#define reflags re_syntax_options
++#undef REG_NOSUB
++#undef REG_EXTENDED
++#undef REG_ICASE
++#define REG_NOSUB bug:is:here /* should not be used */
++#define REG_EXTENDED RE_SYNTAX_EGREP
++#define REG_ICASE bug:is:here /* should not be used */
++#endif
+ #define invert_search (G.invert_search )
+ #define print_filename (G.print_filename )
+ #define open_errors (G.open_errors )
+@@ -240,6 +256,7 @@
+ xregcomp(&gl->compiled_regex, gl->pattern, reflags);
+ #else
+ memset(&gl->compiled_regex, 0, sizeof(gl->compiled_regex));
++ gl->compiled_regex.translate = case_fold; /* for -i */
+ if (re_compile_pattern(gl->pattern, strlen(gl->pattern), &gl->compiled_regex))
+ bb_error_msg_and_die("bad regex '%s'", gl->pattern);
+ #endif
+@@ -532,17 +549,34 @@
+ if (ENABLE_FEATURE_GREP_FGREP_ALIAS && applet_name[0] == 'f')
+ option_mask32 |= OPT_F;
+
++#if !ENABLE_EXTRA_COMPAT
+ if (!(option_mask32 & (OPT_o | OPT_w)))
+ reflags = REG_NOSUB;
++#endif
+
+ if (ENABLE_FEATURE_GREP_EGREP_ALIAS
+ && (applet_name[0] == 'e' || (option_mask32 & OPT_E))
+ ) {
+ reflags |= REG_EXTENDED;
+ }
++#if ENABLE_EXTRA_COMPAT
++ else {
++ reflags = RE_SYNTAX_GREP;
++ }
++#endif
+
+- if (option_mask32 & OPT_i)
++ if (option_mask32 & OPT_i) {
++#if !ENABLE_EXTRA_COMPAT
+ reflags |= REG_ICASE;
++#else
++ int i;
++ case_fold = xmalloc(256);
++ for (i = 0; i < 256; i++)
++ case_fold[i] = (unsigned char)i;
++ for (i = 'a'; i <= 'z'; i++)
++ case_fold[i] = (unsigned char)(i - ('a' - 'A'));
++#endif
++ }
+
+ argv += optind;
+ argc -= optind;
Modified: trunk/buildroot/package/busybox/busybox-1.12.0-insmod.patch
===================================================================
--- trunk/buildroot/package/busybox/busybox-1.12.0-insmod.patch 2008-09-22 08:11:05 UTC (rev 23452)
+++ trunk/buildroot/package/busybox/busybox-1.12.0-insmod.patch 2008-09-22 11:54:17 UTC (rev 23453)
@@ -1,6 +1,113 @@
--- busybox-1.12.0/modutils/insmod.c Wed Aug 6 00:56:02 2008
-+++ busybox-1.12.0-insmod/modutils/insmod.c Thu Aug 28 23:38:35 2008
-@@ -2212,7 +2212,7 @@
++++ busybox-1.12.0-insmod/modutils/insmod.c Sun Aug 31 23:56:28 2008
+@@ -1059,8 +1059,9 @@
+
+ case R_68K_PC8:
+ v -= dot;
+- if ((ElfW(Sword))v > 0x7f ||
+- (ElfW(Sword))v < -(ElfW(Sword))0x80) {
++ if ((ElfW(Sword))v > 0x7f
++ || (ElfW(Sword))v < -(ElfW(Sword))0x80
++ ) {
+ ret = obj_reloc_overflow;
+ }
+ *(char *)loc = v;
+@@ -1068,8 +1069,9 @@
+
+ case R_68K_PC16:
+ v -= dot;
+- if ((ElfW(Sword))v > 0x7fff ||
+- (ElfW(Sword))v < -(ElfW(Sword))0x8000) {
++ if ((ElfW(Sword))v > 0x7fff
++ || (ElfW(Sword))v < -(ElfW(Sword))0x8000
++ ) {
+ ret = obj_reloc_overflow;
+ }
+ *(short *)loc = v;
+@@ -1208,8 +1210,9 @@
+ {
+ Elf32_Addr word;
+
+- if ((Elf32_Sword)v > 0x7fff ||
+- (Elf32_Sword)v < -(Elf32_Sword)0x8000) {
++ if ((Elf32_Sword)v > 0x7fff
++ || (Elf32_Sword)v < -(Elf32_Sword)0x8000
++ ) {
+ ret = obj_reloc_overflow;
+ }
+
+@@ -1238,8 +1241,9 @@
+ Elf32_Addr word;
+
+ v -= dot + 4;
+- if ((Elf32_Sword)v > 0x7fff ||
+- (Elf32_Sword)v < -(Elf32_Sword)0x8000) {
++ if ((Elf32_Sword)v > 0x7fff
++ || (Elf32_Sword)v < -(Elf32_Sword)0x8000
++ ) {
+ ret = obj_reloc_overflow;
+ }
+
+@@ -1253,9 +1257,10 @@
+ Elf32_Addr word, gp;
+ /* get _gp */
+ gp = obj_symbol_final_value(f, obj_find_symbol(f, SPFX "_gp"));
+- v-=gp;
+- if ((Elf32_Sword)v > 0x7fff ||
+- (Elf32_Sword)v < -(Elf32_Sword)0x8000) {
++ v -= gp;
++ if ((Elf32_Sword)v > 0x7fff
++ || (Elf32_Sword)v < -(Elf32_Sword)0x8000
++ ) {
+ ret = obj_reloc_overflow;
+ }
+
+@@ -2132,7 +2137,6 @@
+ for (sym = f->symtab[hash]; sym; sym = sym->next)
+ if (f->symbol_cmp(sym->name, name) == 0)
+ return sym;
+-
+ return NULL;
+ }
+
+@@ -2141,12 +2145,10 @@
+ if (sym) {
+ if (sym->secidx >= SHN_LORESERVE)
+ return sym->value;
+-
+ return sym->value + f->sections[sym->secidx]->header.sh_addr;
+- } else {
+- /* As a special case, a NULL sym has value zero. */
+- return 0;
+ }
++ /* As a special case, a NULL sym has value zero. */
++ return 0;
+ }
+
+ static struct obj_section *obj_find_section(struct obj_file *f, const char *name)
+@@ -2156,7 +2158,6 @@
+ for (i = 0; i < n; ++i)
+ if (strcmp(f->sections[i]->name, name) == 0)
+ return f->sections[i];
+-
+ return NULL;
+ }
+
+@@ -2167,9 +2168,11 @@
+ af = a->header.sh_flags;
+
+ ac = 0;
+- if (a->name[0] != '.' || strlen(a->name) != 10 ||
+- strcmp(a->name + 5, ".init"))
++ if (a->name[0] != '.' || strlen(a->name) != 10
++ || strcmp(a->name + 5, ".init") != 0
++ ) {
+ ac |= 32;
++ }
+ if (af & SHF_ALLOC)
+ ac |= 16;
+ if (!(af & SHF_WRITE))
+@@ -2212,7 +2215,7 @@
sec->name = name;
sec->idx = newidx;
if (size)
@@ -9,7 +116,7 @@
obj_insert_section_load_order(f, sec);
-@@ -2227,7 +2227,7 @@
+@@ -2227,7 +2230,7 @@
int newidx = f->header.e_shnum++;
struct obj_section *sec;
@@ -18,7 +125,7 @@
f->sections[newidx] = sec = arch_new_section();
sec->header.sh_type = SHT_PROGBITS;
-@@ -2237,7 +2237,7 @@
+@@ -2237,7 +2240,7 @@
sec->name = name;
sec->idx = newidx;
if (size)
@@ -27,7 +134,7 @@
sec->load_next = f->load_order;
f->load_order = sec;
-@@ -2689,8 +2689,7 @@
+@@ -2689,8 +2692,7 @@
/* Collect the modules' symbols. */
if (nmod) {
@@ -37,7 +144,7 @@
for (i = 0, mn = module_names, m = modules;
i < nmod; ++i, ++m, mn += strlen(mn) + 1) {
struct new_module_info info;
-@@ -2770,13 +2769,14 @@
+@@ -2770,13 +2772,14 @@
}
@@ -54,7 +161,64 @@
obj_add_symbol(f, SPFX "__this_module", -1,
ELF_ST_INFO(STB_LOCAL, STT_OBJECT), sec->idx, 0,
-@@ -3124,12 +3124,9 @@
+@@ -2856,18 +2859,19 @@
+ /* We don't want to export symbols residing in sections that
+ aren't loaded. There are a number of these created so that
+ we make sure certain module options don't appear twice. */
+-
+- loaded = alloca(sizeof(int) * (i = f->header.e_shnum));
++ i = f->header.e_shnum;
++ loaded = alloca(sizeof(int) * i);
+ while (--i >= 0)
+ loaded[i] = (f->sections[i]->header.sh_flags & SHF_ALLOC) != 0;
+
+ for (nsyms = i = 0; i < HASH_BUCKETS; ++i) {
+ struct obj_symbol *sym;
+- for (sym = f->symtab[i]; sym; sym = sym->next)
++ for (sym = f->symtab[i]; sym; sym = sym->next) {
+ if (ELF_ST_BIND(sym->info) != STB_LOCAL
+ && sym->secidx <= SHN_HIRESERVE
+ && (sym->secidx >= SHN_LORESERVE
+- || loaded[sym->secidx])) {
++ || loaded[sym->secidx])
++ ) {
+ ElfW(Addr) ofs = nsyms * 2 * tgt_sizeof_void_p;
+
+ obj_symbol_patch(f, sec->idx, ofs, sym);
+@@ -2876,6 +2880,7 @@
+
+ nsyms++;
+ }
++ }
+ }
+
+ obj_extend_section(sec, nsyms * 2 * tgt_sizeof_char_p);
+@@ -2934,9 +2939,11 @@
+ }
+ sec = obj_find_section(f, ".data.init");
+ if (sec) {
+- if (!module->runsize ||
+- module->runsize > sec->header.sh_addr - m_addr)
++ if (!module->runsize
++ || module->runsize > sec->header.sh_addr - m_addr
++ ) {
+ module->runsize = sec->header.sh_addr - m_addr;
++ }
+ }
+ sec = obj_find_section(f, ARCHDATA_SEC_NAME);
+ if (sec && sec->header.sh_size) {
+@@ -3083,9 +3090,9 @@
+ if (i == f->header.e_shnum) {
+ struct obj_section *sec;
+
++ f->header.e_shnum++;
+ f->sections = xrealloc_vector(f->sections, 2, i);
+ f->sections[i] = sec = arch_new_section();
+- f->header.e_shnum = i + 1;
+
+ sec->header.sh_type = SHT_PROGBITS;
+ sec->header.sh_flags = SHF_WRITE | SHF_ALLOC;
+@@ -3124,12 +3131,9 @@
for (i = 0; i < f->header.e_shnum; ++i) {
struct obj_section *s = f->sections[i];
if (s->header.sh_type == SHT_NOBITS) {
@@ -69,9 +233,45 @@
s->header.sh_type = SHT_PROGBITS;
}
}
-@@ -3354,8 +3351,10 @@
+@@ -3222,8 +3226,8 @@
+ #if SHT_RELM == SHT_RELA
+ #if defined(__alpha__) && defined(AXP_BROKEN_GAS)
+ /* Work around a nasty GAS bug, that is fixed as of 2.7.0.9. */
+- if (!extsym || !extsym->st_name ||
+- ELF_ST_BIND(extsym->st_info) != STB_LOCAL)
++ if (!extsym || !extsym->st_name
++ || ELF_ST_BIND(extsym->st_info) != STB_LOCAL)
+ #endif
+ value += rel->r_addend;
+ #endif
+@@ -3329,16 +3333,17 @@
}
+ if (f->header.e_ident[EI_MAG0] != ELFMAG0
+- || f->header.e_ident[EI_MAG1] != ELFMAG1
+- || f->header.e_ident[EI_MAG2] != ELFMAG2
+- || f->header.e_ident[EI_MAG3] != ELFMAG3) {
++ || f->header.e_ident[EI_MAG1] != ELFMAG1
++ || f->header.e_ident[EI_MAG2] != ELFMAG2
++ || f->header.e_ident[EI_MAG3] != ELFMAG3
++ ) {
+ bb_error_msg_and_die("not an ELF file");
+ }
+ if (f->header.e_ident[EI_CLASS] != ELFCLASSM
+- || f->header.e_ident[EI_DATA] != (BB_BIG_ENDIAN
+- ? ELFDATA2MSB : ELFDATA2LSB)
+- || f->header.e_ident[EI_VERSION] != EV_CURRENT
+- || !MATCH_MACHINE(f->header.e_machine)) {
++ || f->header.e_ident[EI_DATA] != (BB_BIG_ENDIAN ? ELFDATA2MSB : ELFDATA2LSB)
++ || f->header.e_ident[EI_VERSION] != EV_CURRENT
++ || !MATCH_MACHINE(f->header.e_machine)
++ ) {
+ bb_error_msg_and_die("ELF file not for this architecture");
+ }
+ if (f->header.e_type != ET_REL) {
+@@ -3354,8 +3359,10 @@
+ }
+
shnum = f->header.e_shnum;
- f->sections = xmalloc(sizeof(struct obj_section *) * shnum);
- memset(f->sections, 0, sizeof(struct obj_section *) * shnum);
@@ -82,7 +282,7 @@
section_headers = alloca(sizeof(ElfW(Shdr)) * shnum);
fseek(fp, f->header.e_shoff, SEEK_SET);
-@@ -3391,14 +3390,13 @@
+@@ -3391,14 +3398,13 @@
case SHT_SYMTAB:
case SHT_STRTAB:
case SHT_RELM:
@@ -99,3 +299,35 @@
}
break;
+@@ -3860,16 +3866,20 @@
+ for (nsyms = i = 0; i < HASH_BUCKETS; ++i)
+ for (sym = f->symtab[i]; sym; sym = sym->next)
+ if (sym->secidx <= SHN_HIRESERVE
+- && (sym->secidx >= SHN_LORESERVE || loaded[sym->secidx]))
++ && (sym->secidx >= SHN_LORESERVE || loaded[sym->secidx])
++ ) {
+ ++nsyms;
++ }
+
+ all = alloca(nsyms * sizeof(struct obj_symbol *));
+
+ for (i = 0, p = all; i < HASH_BUCKETS; ++i)
+ for (sym = f->symtab[i]; sym; sym = sym->next)
+ if (sym->secidx <= SHN_HIRESERVE
+- && (sym->secidx >= SHN_LORESERVE || loaded[sym->secidx]))
++ && (sym->secidx >= SHN_LORESERVE || loaded[sym->secidx])
++ ) {
+ *p++ = sym;
++ }
+
+ /* And list them. */
+ printf("\nSymbols:\n");
+@@ -4265,7 +4275,7 @@
+ }
+ #else
+ len = MAXINT(ssize_t);
+- map = xmalloc_open_read_close(filename, &len);
++ map = xmalloc_xopen_read_close(filename, &len);
+ #endif
+
+ if (init_module(map, len, options) != 0)
Added: trunk/buildroot/package/busybox/busybox-1.12.0-lineedit.patch
===================================================================
--- trunk/buildroot/package/busybox/busybox-1.12.0-lineedit.patch (rev 0)
+++ trunk/buildroot/package/busybox/busybox-1.12.0-lineedit.patch 2008-09-22 11:54:17 UTC (rev 23453)
@@ -0,0 +1,145 @@
+--- busybox-1.12.0/libbb/lineedit.c Wed Aug 20 02:48:13 2008
++++ busybox-1.12.0-lineedit/libbb/lineedit.c Mon Sep 22 00:27:18 2008
+@@ -956,24 +956,33 @@
+
+ #if MAX_HISTORY > 0
+
++static void save_command_ps_at_cur_history(void)
++{
++ if (command_ps[0] != '\0') {
++ int cur = state->cur_history;
++ free(state->history[cur]);
++ state->history[cur] = xstrdup(command_ps);
++ }
++}
++
+ /* state->flags is already checked to be nonzero */
+-static void get_previous_history(void)
++static int get_previous_history(void)
+ {
+- if (command_ps[0] != '\0' || state->history[state->cur_history] == NULL) {
+- free(state->history[state->cur_history]);
+- state->history[state->cur_history] = xstrdup(command_ps);
++ if ((state->flags & DO_HISTORY) && state->cur_history) {
++ save_command_ps_at_cur_history();
++ state->cur_history--;
++ return 1;
+ }
+- state->cur_history--;
++ beep();
++ return 0;
+ }
+
+ static int get_next_history(void)
+ {
+ if (state->flags & DO_HISTORY) {
+- int ch = state->cur_history;
+- if (ch < state->cnt_history) {
+- get_previous_history(); /* save the current history line */
+- state->cur_history = ch + 1;
+- return state->cur_history;
++ if (state->cur_history < state->cnt_history) {
++ save_command_ps_at_cur_history(); /* save the current history line */
++ return ++state->cur_history;
+ }
+ }
+ beep();
+@@ -995,6 +1004,7 @@
+ for (hi = state->cnt_history; hi > 0;) {
+ hi--;
+ free(state->history[hi]);
++ state->history[hi] = NULL;
+ }
+
+ for (hi = 0; hi < MAX_HISTORY;) {
+@@ -1006,7 +1016,7 @@
+ l = strlen(hl);
+ if (l >= MAX_LINELEN)
+ hl[MAX_LINELEN-1] = '\0';
+- if (l == 0 || hl[0] == ' ') {
++ if (l == 0) {
+ free(hl);
+ continue;
+ }
+@@ -1043,19 +1053,27 @@
+
+ if (!(state->flags & DO_HISTORY))
+ return;
+-
++ if (str[0] == '\0')
++ return;
+ i = state->cnt_history;
+- free(state->history[MAX_HISTORY]);
+- state->history[MAX_HISTORY] = NULL;
+- /* After max history, remove the oldest command */
++ /* Don't save dupes */
++ if (i && strcmp(state->history[i-1], str) == 0)
++ return;
++
++ free(state->history[MAX_HISTORY]); /* redundant, paranoia */
++ state->history[MAX_HISTORY] = NULL; /* redundant, paranoia */
++
++ /* If history[] is full, remove the oldest command */
++ /* we need to keep history[MAX_HISTORY] empty, hence >=, not > */
+ if (i >= MAX_HISTORY) {
+ free(state->history[0]);
+ for (i = 0; i < MAX_HISTORY-1; i++)
+ state->history[i] = state->history[i+1];
++ /* i == MAX_HISTORY-1 */
+ }
+-// Maybe "if (!i || strcmp(history[i-1], command) != 0) ..."
+-// (i.e. do not save dups?)
++ /* i <= MAX_HISTORY-1 */
+ state->history[i++] = xstrdup(str);
++ /* i <= MAX_HISTORY */
+ state->cur_history = i;
+ state->cnt_history = i;
+ #if ENABLE_FEATURE_EDITING_SAVEHISTORY
+@@ -1432,6 +1450,13 @@
+ }
+ }
+ #endif
++
++#if 0
++ for (ic = 0; ic <= MAX_HISTORY; ic++)
++ bb_error_msg("history[%d]:'%s'", ic, state->history[ic]);
++ bb_error_msg("cur_history:%d cnt_history:%d", state->cur_history, state->cnt_history);
++#endif
++
+ /* Print out the command prompt */
+ parse_and_put_prompt(prompt);
+
+@@ -1540,11 +1565,8 @@
+ vi_case(CTRL('P')|vbit:)
+ vi_case('k'|vbit:)
+ /* Control-p -- Get previous command from history */
+- if ((state->flags & DO_HISTORY) && state->cur_history > 0) {
+- get_previous_history();
++ if (get_previous_history())
+ goto rewrite_line;
+- }
+- beep();
+ break;
+ #endif
+
+@@ -1733,10 +1755,8 @@
+ #if MAX_HISTORY > 0
+ case 'A':
+ /* Up Arrow -- Get previous command from history */
+- if ((state->flags & DO_HISTORY) && state->cur_history > 0) {
+- get_previous_history();
++ if (get_previous_history())
+ goto rewrite_line;
+- }
+ beep();
+ break;
+ case 'B':
+@@ -1746,7 +1766,7 @@
+ rewrite_line:
+ /* Rewrite the line with the selected history item */
+ /* change command */
+- command_len = strlen(strcpy(command, state->history[state->cur_history]));
++ command_len = strlen(strcpy(command, state->history[state->cur_history] ? : ""));
+ /* redraw and go to eol (bol, in vi */
+ redraw(cmdedit_y, (state->flags & VI_MODE) ? 9999 : 0);
+ break;
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