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-rw-r--r--shell/ash.c456
1 files changed, 277 insertions, 179 deletions
diff --git a/shell/ash.c b/shell/ash.c
index 4c8a28911..f7604cf93 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -67,6 +67,13 @@ extern char **environ;
#endif
+/* ============ Hash table sizes. Configurable. */
+
+#define VTABSIZE 39
+#define ATABSIZE 39
+#define CMDTABLESIZE 31 /* should be prime */
+
+
/* ============ Misc helpers */
#define xbarrier() do { __asm__ __volatile__ ("": : :"memory"); } while (0)
@@ -127,30 +134,10 @@ static char optlist[NOPTS] ALIGN1;
/* ============ Misc data */
-static char nullstr[1] ALIGN1; /* zero length string */
static const char homestr[] ALIGN1 = "HOME";
static const char snlfmt[] ALIGN1 = "%s\n";
static const char illnum[] ALIGN1 = "Illegal number: %s";
-static char *minusc; /* argument to -c option */
-
-/* pid of main shell */
-static int rootpid;
-/* shell level: 0 for the main shell, 1 for its children, and so on */
-static int shlvl;
-#define rootshell (!shlvl)
-/* trap handler commands */
-static char *trap[NSIG];
-static smallint isloginsh;
-/* current value of signal */
-static char sigmode[NSIG - 1];
-/* indicates specified signal received */
-static char gotsig[NSIG - 1];
-static char *arg0; /* value of $0 */
-
-
-/* ============ Interrupts / exceptions */
-
/*
* We enclose jmp_buf in a structure so that we can declare pointers to
* jump locations. The global variable handler contains the location to
@@ -163,34 +150,84 @@ static char *arg0; /* value of $0 */
struct jmploc {
jmp_buf loc;
};
-static struct jmploc *exception_handler;
-static int exception;
-/* exceptions */
+
+struct globals_misc {
+ /* pid of main shell */
+ int rootpid;
+ /* shell level: 0 for the main shell, 1 for its children, and so on */
+ int shlvl;
+#define rootshell (!shlvl)
+ char *minusc; /* argument to -c option */
+
+ char *curdir; // = nullstr; /* current working directory */
+ char *physdir; // = nullstr; /* physical working directory */
+
+ char *arg0; /* value of $0 */
+
+ struct jmploc *exception_handler;
+ int exception;
+ /* exceptions */
#define EXINT 0 /* SIGINT received */
#define EXERROR 1 /* a generic error */
#define EXSHELLPROC 2 /* execute a shell procedure */
#define EXEXEC 3 /* command execution failed */
#define EXEXIT 4 /* exit the shell */
#define EXSIG 5 /* trapped signal in wait(1) */
-static volatile int suppressint;
-static volatile sig_atomic_t intpending;
-/* do we generate EXSIG events */
-static int exsig;
-/* last pending signal */
-static volatile sig_atomic_t pendingsig;
-
-/*
- * Sigmode records the current value of the signal handlers for the various
- * modes. A value of zero means that the current handler is not known.
- * S_HARD_IGN indicates that the signal was ignored on entry to the shell,
- */
-
+ volatile int suppressint;
+ volatile sig_atomic_t intpending;
+ /* do we generate EXSIG events */
+ int exsig;
+ /* last pending signal */
+ volatile sig_atomic_t pendingsig;
+
+ /* trap handler commands */
+ char *trap[NSIG];
+ smallint isloginsh;
+ char nullstr[1]; /* zero length string */
+ /*
+ * Sigmode records the current value of the signal handlers for the various
+ * modes. A value of zero means that the current handler is not known.
+ * S_HARD_IGN indicates that the signal was ignored on entry to the shell,
+ */
+ char sigmode[NSIG - 1];
#define S_DFL 1 /* default signal handling (SIG_DFL) */
#define S_CATCH 2 /* signal is caught */
#define S_IGN 3 /* signal is ignored (SIG_IGN) */
#define S_HARD_IGN 4 /* signal is ignored permenantly */
#define S_RESET 5 /* temporary - to reset a hard ignored sig */
+ /* indicates specified signal received */
+ char gotsig[NSIG - 1];
+};
+/* Make it reside in writable memory, yet make compiler understand that it is not going to change. */
+static struct globals_misc *const ptr_to_globals_misc __attribute__ ((section (".data")));
+#define G_misc (*ptr_to_globals_misc)
+#define rootpid (G_misc.rootpid )
+#define shlvl (G_misc.shlvl )
+#define minusc (G_misc.minusc )
+#define curdir (G_misc.curdir )
+#define physdir (G_misc.physdir )
+#define arg0 (G_misc.arg0 )
+#define exception_handler (G_misc.exception_handler)
+#define exception (G_misc.exception )
+#define suppressint (G_misc.suppressint )
+#define intpending (G_misc.intpending )
+#define exsig (G_misc.exsig )
+#define pendingsig (G_misc.pendingsig )
+#define trap (G_misc.trap )
+#define isloginsh (G_misc.isloginsh)
+#define nullstr (G_misc.nullstr )
+#define sigmode (G_misc.sigmode )
+#define gotsig (G_misc.gotsig )
+#define INIT_G_misc() do { \
+ (*(struct globals_misc**)&ptr_to_globals_misc) = xzalloc(sizeof(G_misc)); \
+ curdir = nullstr; \
+ physdir = nullstr; \
+} while (0)
+
+
+/* ============ Interrupts / exceptions */
+
/*
* These macros allow the user to suspend the handling of interrupt signals
* over a period of time. This is similar to SIGHOLD to or sigblock, but
@@ -1090,7 +1127,7 @@ enum {
* on many machines. */
SHELL_SIZE = sizeof(union {int i; char *cp; double d; }) - 1,
/* Minimum size of a block */
- MINSIZE = SHELL_ALIGN(504),
+ MINSIZE = SHELL_ALIGN(504),
};
struct stack_block {
@@ -1105,16 +1142,38 @@ struct stackmark {
struct stackmark *marknext;
};
-static struct stack_block stackbase;
-static struct stack_block *stackp = &stackbase;
-static struct stackmark *markp;
-static char *stacknxt = stackbase.space;
-static size_t stacknleft = MINSIZE;
-static char *sstrend = stackbase.space + MINSIZE;
-static int herefd = -1;
-#define stackblock() ((void *)stacknxt)
-#define stackblocksize() stacknleft
+struct globals_memstack {
+ struct stack_block *g_stackp; // = &stackbase;
+ struct stackmark *markp;
+ char *g_stacknxt; // = stackbase.space;
+ char *sstrend; // = stackbase.space + MINSIZE;
+ size_t g_stacknleft; // = MINSIZE;
+ int herefd; // = -1;
+ struct stack_block stackbase;
+};
+/* Make it reside in writable memory, yet make compiler understand that it is not going to change. */
+static struct globals_memstack *const ptr_to_globals_memstack __attribute__ ((section (".data")));
+#define G_memstack (*ptr_to_globals_memstack)
+#define g_stackp (G_memstack.g_stackp )
+#define markp (G_memstack.markp )
+#define g_stacknxt (G_memstack.g_stacknxt )
+#define sstrend (G_memstack.sstrend )
+#define g_stacknleft (G_memstack.g_stacknleft)
+#define herefd (G_memstack.herefd )
+#define stackbase (G_memstack.stackbase )
+#define INIT_G_memstack() do { \
+ (*(struct globals_memstack**)&ptr_to_globals_memstack) = xzalloc(sizeof(G_memstack)); \
+ g_stackp = &stackbase; \
+ g_stacknxt = stackbase.space; \
+ g_stacknleft = MINSIZE; \
+ sstrend = stackbase.space + MINSIZE; \
+ herefd = -1; \
+} while (0)
+
+#define stackblock() ((void *)g_stacknxt)
+#define stackblocksize() g_stacknleft
+
static void *
ckrealloc(void * p, size_t nbytes)
@@ -1158,7 +1217,7 @@ stalloc(size_t nbytes)
size_t aligned;
aligned = SHELL_ALIGN(nbytes);
- if (aligned > stacknleft) {
+ if (aligned > g_stacknleft) {
size_t len;
size_t blocksize;
struct stack_block *sp;
@@ -1171,16 +1230,16 @@ stalloc(size_t nbytes)
ash_msg_and_raise_error(bb_msg_memory_exhausted);
INT_OFF;
sp = ckmalloc(len);
- sp->prev = stackp;
- stacknxt = sp->space;
- stacknleft = blocksize;
- sstrend = stacknxt + blocksize;
- stackp = sp;
+ sp->prev = g_stackp;
+ g_stacknxt = sp->space;
+ g_stacknleft = blocksize;
+ sstrend = g_stacknxt + blocksize;
+ g_stackp = sp;
INT_ON;
}
- p = stacknxt;
- stacknxt += aligned;
- stacknleft -= aligned;
+ p = g_stacknxt;
+ g_stacknxt += aligned;
+ g_stacknleft -= aligned;
return p;
}
@@ -1188,13 +1247,13 @@ static void
stunalloc(void *p)
{
#if DEBUG
- if (!p || (stacknxt < (char *)p) || ((char *)p < stackp->space)) {
+ if (!p || (g_stacknxt < (char *)p) || ((char *)p < g_stackp->space)) {
write(2, "stunalloc\n", 10);
abort();
}
#endif
- stacknleft += stacknxt - (char *)p;
- stacknxt = p;
+ g_stacknleft += g_stacknxt - (char *)p;
+ g_stacknxt = p;
}
/*
@@ -1210,9 +1269,9 @@ ststrdup(const char *p)
static void
setstackmark(struct stackmark *mark)
{
- mark->stackp = stackp;
- mark->stacknxt = stacknxt;
- mark->stacknleft = stacknleft;
+ mark->stackp = g_stackp;
+ mark->stacknxt = g_stacknxt;
+ mark->stacknleft = g_stacknleft;
mark->marknext = markp;
markp = mark;
}
@@ -1227,13 +1286,13 @@ popstackmark(struct stackmark *mark)
INT_OFF;
markp = mark->marknext;
- while (stackp != mark->stackp) {
- sp = stackp;
- stackp = sp->prev;
+ while (g_stackp != mark->stackp) {
+ sp = g_stackp;
+ g_stackp = sp->prev;
free(sp);
}
- stacknxt = mark->stacknxt;
- stacknleft = mark->stacknleft;
+ g_stacknxt = mark->stacknxt;
+ g_stacknleft = mark->stacknleft;
sstrend = mark->stacknxt + mark->stacknleft;
INT_ON;
}
@@ -1252,13 +1311,13 @@ growstackblock(void)
{
size_t newlen;
- newlen = stacknleft * 2;
- if (newlen < stacknleft)
+ newlen = g_stacknleft * 2;
+ if (newlen < g_stacknleft)
ash_msg_and_raise_error(bb_msg_memory_exhausted);
if (newlen < 128)
newlen += 128;
- if (stacknxt == stackp->space && stackp != &stackbase) {
+ if (g_stacknxt == g_stackp->space && g_stackp != &stackbase) {
struct stack_block *oldstackp;
struct stackmark *xmark;
struct stack_block *sp;
@@ -1266,15 +1325,15 @@ growstackblock(void)
size_t grosslen;
INT_OFF;
- oldstackp = stackp;
- sp = stackp;
+ oldstackp = g_stackp;
+ sp = g_stackp;
prevstackp = sp->prev;
grosslen = newlen + sizeof(struct stack_block) - MINSIZE;
sp = ckrealloc(sp, grosslen);
sp->prev = prevstackp;
- stackp = sp;
- stacknxt = sp->space;
- stacknleft = newlen;
+ g_stackp = sp;
+ g_stacknxt = sp->space;
+ g_stacknleft = newlen;
sstrend = sp->space + newlen;
/*
@@ -1283,20 +1342,20 @@ growstackblock(void)
*/
xmark = markp;
while (xmark != NULL && xmark->stackp == oldstackp) {
- xmark->stackp = stackp;
- xmark->stacknxt = stacknxt;
- xmark->stacknleft = stacknleft;
+ xmark->stackp = g_stackp;
+ xmark->stacknxt = g_stacknxt;
+ xmark->stacknleft = g_stacknleft;
xmark = xmark->marknext;
}
INT_ON;
} else {
- char *oldspace = stacknxt;
- int oldlen = stacknleft;
+ char *oldspace = g_stacknxt;
+ int oldlen = g_stacknleft;
char *p = stalloc(newlen);
/* free the space we just allocated */
- stacknxt = memcpy(p, oldspace, oldlen);
- stacknleft += newlen;
+ g_stacknxt = memcpy(p, oldspace, oldlen);
+ g_stacknleft += newlen;
}
}
@@ -1304,8 +1363,8 @@ static void
grabstackblock(size_t len)
{
len = SHELL_ALIGN(len);
- stacknxt += len;
- stacknleft -= len;
+ g_stacknxt += len;
+ g_stacknleft -= len;
}
/*
@@ -1343,7 +1402,7 @@ growstackstr(void)
static char *
makestrspace(size_t newlen, char *p)
{
- size_t len = p - stacknxt;
+ size_t len = p - g_stacknxt;
size_t size = stackblocksize();
for (;;) {
@@ -1568,41 +1627,26 @@ static unsigned long rseed;
/* ============ Shell variables */
-/* flags */
-#define VEXPORT 0x01 /* variable is exported */
-#define VREADONLY 0x02 /* variable cannot be modified */
-#define VSTRFIXED 0x04 /* variable struct is statically allocated */
-#define VTEXTFIXED 0x08 /* text is statically allocated */
-#define VSTACK 0x10 /* text is allocated on the stack */
-#define VUNSET 0x20 /* the variable is not set */
-#define VNOFUNC 0x40 /* don't call the callback function */
-#define VNOSET 0x80 /* do not set variable - just readonly test */
-#define VNOSAVE 0x100 /* when text is on the heap before setvareq */
-#ifdef DYNAMIC_VAR
-# define VDYNAMIC 0x200 /* dynamic variable */
-#else
-# define VDYNAMIC 0
-#endif
-
-#ifdef IFS_BROKEN
-static const char defifsvar[] ALIGN1 = "IFS= \t\n";
-#define defifs (defifsvar + 4)
-#else
-static const char defifs[] ALIGN1 = " \t\n";
-#endif
+/*
+ * The parsefile structure pointed to by the global variable parsefile
+ * contains information about the current file being read.
+ */
+struct redirtab {
+ struct redirtab *next;
+ int renamed[10];
+ int nullredirs;
+};
struct shparam {
int nparam; /* # of positional parameters (without $0) */
- unsigned char malloc; /* if parameter list dynamically allocated */
- char **p; /* parameter list */
#if ENABLE_ASH_GETOPTS
int optind; /* next parameter to be processed by getopts */
int optoff; /* used by getopts */
#endif
+ unsigned char malloced; /* if parameter list dynamically allocated */
+ char **p; /* parameter list */
};
-static struct shparam shellparam; /* $@ current positional parameters */
-
/*
* Free the list of positional parameters.
*/
@@ -1611,7 +1655,7 @@ freeparam(volatile struct shparam *param)
{
char **ap;
- if (param->malloc) {
+ if (param->malloced) {
for (ap = param->p; *ap; ap++)
free(*ap);
free(param->p);
@@ -1619,12 +1663,7 @@ freeparam(volatile struct shparam *param)
}
#if ENABLE_ASH_GETOPTS
-static void
-getoptsreset(const char *value)
-{
- shellparam.optind = number(value);
- shellparam.optoff = -1;
-}
+static void getoptsreset(const char *value);
#endif
struct var {
@@ -1642,7 +1681,31 @@ struct localvar {
const char *text; /* saved text */
};
-/* Forward decls for varinit[] */
+/* flags */
+#define VEXPORT 0x01 /* variable is exported */
+#define VREADONLY 0x02 /* variable cannot be modified */
+#define VSTRFIXED 0x04 /* variable struct is statically allocated */
+#define VTEXTFIXED 0x08 /* text is statically allocated */
+#define VSTACK 0x10 /* text is allocated on the stack */
+#define VUNSET 0x20 /* the variable is not set */
+#define VNOFUNC 0x40 /* don't call the callback function */
+#define VNOSET 0x80 /* do not set variable - just readonly test */
+#define VNOSAVE 0x100 /* when text is on the heap before setvareq */
+#ifdef DYNAMIC_VAR
+# define VDYNAMIC 0x200 /* dynamic variable */
+#else
+# define VDYNAMIC 0
+#endif
+
+#ifdef IFS_BROKEN
+static const char defifsvar[] ALIGN1 = "IFS= \t\n";
+#define defifs (defifsvar + 4)
+#else
+static const char defifs[] ALIGN1 = " \t\n";
+#endif
+
+
+/* Need to be before varinit_data[] */
#if ENABLE_LOCALE_SUPPORT
static void
change_lc_all(const char *value)
@@ -1666,46 +1729,78 @@ static void changepath(const char *);
static void change_random(const char *);
#endif
-static struct var varinit[] = {
+static const struct {
+ int flags;
+ const char *text;
+ void (*func)(const char *);
+} varinit_data[] = {
#ifdef IFS_BROKEN
- { NULL, VSTRFIXED|VTEXTFIXED, defifsvar, NULL },
+ { VSTRFIXED|VTEXTFIXED , defifsvar , NULL },
#else
- { NULL, VSTRFIXED|VTEXTFIXED|VUNSET, "IFS\0", NULL },
+ { VSTRFIXED|VTEXTFIXED|VUNSET, "IFS\0" , NULL },
#endif
#if ENABLE_ASH_MAIL
- { NULL, VSTRFIXED|VTEXTFIXED|VUNSET, "MAIL\0", changemail },
- { NULL, VSTRFIXED|VTEXTFIXED|VUNSET, "MAILPATH\0", changemail },
+ { VSTRFIXED|VTEXTFIXED|VUNSET, "MAIL\0" , changemail },
+ { VSTRFIXED|VTEXTFIXED|VUNSET, "MAILPATH\0", changemail },
#endif
- { NULL, VSTRFIXED|VTEXTFIXED, bb_PATH_root_path, changepath },
- { NULL, VSTRFIXED|VTEXTFIXED, "PS1=$ ", NULL },
- { NULL, VSTRFIXED|VTEXTFIXED, "PS2=> ", NULL },
- { NULL, VSTRFIXED|VTEXTFIXED, "PS4=+ ", NULL },
+ { VSTRFIXED|VTEXTFIXED , bb_PATH_root_path, changepath },
+ { VSTRFIXED|VTEXTFIXED , "PS1=$ " , NULL },
+ { VSTRFIXED|VTEXTFIXED , "PS2=> " , NULL },
+ { VSTRFIXED|VTEXTFIXED , "PS4=+ " , NULL },
#if ENABLE_ASH_GETOPTS
- { NULL, VSTRFIXED|VTEXTFIXED, "OPTIND=1", getoptsreset },
+ { VSTRFIXED|VTEXTFIXED , "OPTIND=1" , getoptsreset },
#endif
#if ENABLE_ASH_RANDOM_SUPPORT
- { NULL, VSTRFIXED|VTEXTFIXED|VUNSET|VDYNAMIC, "RANDOM\0", change_random },
+ { VSTRFIXED|VTEXTFIXED|VUNSET|VDYNAMIC, "RANDOM\0", change_random },
#endif
#if ENABLE_LOCALE_SUPPORT
- { NULL, VSTRFIXED | VTEXTFIXED | VUNSET, "LC_ALL\0", change_lc_all },
- { NULL, VSTRFIXED | VTEXTFIXED | VUNSET, "LC_CTYPE\0", change_lc_ctype },
+ { VSTRFIXED|VTEXTFIXED|VUNSET, "LC_ALL\0" , change_lc_all },
+ { VSTRFIXED|VTEXTFIXED|VUNSET, "LC_CTYPE\0", change_lc_ctype },
#endif
#if ENABLE_FEATURE_EDITING_SAVEHISTORY
- { NULL, VSTRFIXED | VTEXTFIXED | VUNSET, "HISTFILE\0", NULL },
+ { VSTRFIXED|VTEXTFIXED|VUNSET, "HISTFILE\0", NULL },
#endif
};
-#define vifs varinit[0]
+
+struct globals_var {
+ struct shparam shellparam; /* $@ current positional parameters */
+ struct redirtab *redirlist;
+ int g_nullredirs;
+ int preverrout_fd; /* save fd2 before print debug if xflag is set. */
+ struct var *vartab[VTABSIZE];
+ struct var varinit[ARRAY_SIZE(varinit_data)];
+};
+/* Make it reside in writable memory, yet make compiler understand that it is not going to change. */
+static struct globals_var *const ptr_to_globals_var __attribute__ ((section (".data")));
+#define G_var (*ptr_to_globals_var)
+#define shellparam (G_var.shellparam )
+#define redirlist (G_var.redirlist )
+#define g_nullredirs (G_var.g_nullredirs )
+#define preverrout_fd (G_var.preverrout_fd)
+#define vartab (G_var.vartab )
+#define varinit (G_var.varinit )
+#define INIT_G_var() do { \
+ int i; \
+ (*(struct globals_var**)&ptr_to_globals_var) = xzalloc(sizeof(G_var)); \
+ for (i = 0; i < ARRAY_SIZE(varinit_data); i++) { \
+ varinit[i].flags = varinit_data[i].flags; \
+ varinit[i].text = varinit_data[i].text; \
+ varinit[i].func = varinit_data[i].func; \
+ } \
+} while (0)
+
+#define vifs varinit[0]
#if ENABLE_ASH_MAIL
-#define vmail (&vifs)[1]
-#define vmpath (&vmail)[1]
+#define vmail (&vifs)[1]
+#define vmpath (&vmail)[1]
#else
-#define vmpath vifs
+#define vmpath vifs
#endif
-#define vpath (&vmpath)[1]
-#define vps1 (&vpath)[1]
-#define vps2 (&vps1)[1]
-#define vps4 (&vps2)[1]
+#define vpath (&vmpath)[1]
+#define vps1 (&vpath)[1]
+#define vps2 (&vps1)[1]
+#define vps4 (&vps2)[1]
#define voptind (&vps4)[1]
#if ENABLE_ASH_GETOPTS
#define vrandom (&voptind)[1]
@@ -1730,27 +1825,19 @@ static struct var varinit[] = {
#define mpathset() ((vmpath.flags & VUNSET) == 0)
-/*
- * The parsefile structure pointed to by the global variable parsefile
- * contains information about the current file being read.
- */
-struct redirtab {
- struct redirtab *next;
- int renamed[10];
- int nullredirs;
-};
-
-static struct redirtab *redirlist;
-static int nullredirs;
-static int preverrout_fd; /* save fd2 before print debug if xflag is set. */
-
-#define VTABSIZE 39
-
-static struct var *vartab[VTABSIZE];
#define is_name(c) ((c) == '_' || isalpha((unsigned char)(c)))
#define is_in_name(c) ((c) == '_' || isalnum((unsigned char)(c)))
+#if ENABLE_ASH_GETOPTS
+static void
+getoptsreset(const char *value)
+{
+ shellparam.optind = number(value);
+ shellparam.optoff = -1;
+}
+#endif
+
/*
* Return of a legal variable name (a letter or underscore followed by zero or
* more letters, underscores, and digits).
@@ -2221,9 +2308,6 @@ setprompt(int whichprompt)
static int docd(const char *, int);
-static char *curdir = nullstr; /* current working directory */
-static char *physdir = nullstr; /* physical working directory */
-
static int
cdopt(void)
{
@@ -2310,7 +2394,7 @@ updatepwd(const char *dir)
static char *
getpwd(void)
{
- char *dir = getcwd(0, 0);
+ char *dir = getcwd(NULL, 0); /* huh, using glibc extension? */
return dir ? dir : nullstr;
}
@@ -2903,8 +2987,6 @@ static const char syntax_index_table[258] = {
#define ALIASINUSE 1
#define ALIASDEAD 2
-#define ATABSIZE 39
-
struct alias {
struct alias *next;
char *name;
@@ -2912,7 +2994,12 @@ struct alias {
int flag;
};
-static struct alias *atab[ATABSIZE];
+
+static struct alias **atab; // [ATABSIZE];
+#define INIT_G_alias() do { \
+ atab = xzalloc(ATABSIZE * sizeof(atab[0])); \
+} while (0)
+
static struct alias **
__lookupalias(const char *name) {
@@ -4797,7 +4884,7 @@ redirect(union node *redir, int flags)
int fd;
int newfd;
- nullredirs++;
+ g_nullredirs++;
if (!redir) {
return;
}
@@ -4807,10 +4894,10 @@ redirect(union node *redir, int flags)
sv = ckmalloc(sizeof(*sv));
sv->next = redirlist;
redirlist = sv;
- sv->nullredirs = nullredirs - 1;
+ sv->nullredirs = g_nullredirs - 1;
for (i = 0; i < 10; i++)
sv->renamed[i] = EMPTY;
- nullredirs = 0;
+ g_nullredirs = 0;
}
n = redir;
do {
@@ -4861,7 +4948,7 @@ popredir(int drop)
struct redirtab *rp;
int i;
- if (--nullredirs >= 0)
+ if (--g_nullredirs >= 0)
return;
INT_OFF;
rp = redirlist;
@@ -4880,7 +4967,7 @@ popredir(int drop)
}
}
redirlist = rp->next;
- nullredirs = rp->nullredirs;
+ g_nullredirs = rp->nullredirs;
free(rp);
INT_ON;
}
@@ -4896,7 +4983,7 @@ static void
clearredir(int drop)
{
for (;;) {
- nullredirs = 0;
+ g_nullredirs = 0;
if (!redirlist)
break;
popredir(drop);
@@ -6458,7 +6545,6 @@ static void find_command(char *, struct cmdentry *, int, const char *);
* would make the command name "hash" a misnomer.
*/
-#define CMDTABLESIZE 31 /* should be prime */
#define ARB 1 /* actual size determined at run time */
struct tblentry {
@@ -6469,8 +6555,13 @@ struct tblentry {
char cmdname[ARB]; /* name of command */
};
-static struct tblentry *cmdtable[CMDTABLESIZE];
-static int builtinloc = -1; /* index in path of %builtin, or -1 */
+static struct tblentry **cmdtable;
+#define INIT_G_cmdtable() do { \
+ cmdtable = xzalloc(CMDTABLESIZE * sizeof(cmdtable[0])); \
+} while (0)
+
+static int builtinloc = -1; /* index in path of %builtin, or -1 */
+
static void
tryexec(char *cmd, char **argv, char **envp)
@@ -7840,7 +7931,7 @@ evalfun(struct funcnode *func, int argc, char **argv, int flags)
savehandler = exception_handler;
exception_handler = &jmploc;
localvars = NULL;
- shellparam.malloc = 0;
+ shellparam.malloced = 0;
func->count++;
funcnest++;
INT_ON;
@@ -7851,7 +7942,7 @@ evalfun(struct funcnode *func, int argc, char **argv, int flags)
shellparam.optoff = -1;
#endif
evaltree(&func->n, flags & EV_TESTED);
-funcdone:
+ funcdone:
INT_OFF;
funcnest--;
freefunc(func);
@@ -8979,7 +9070,7 @@ setparam(char **argv)
}
*ap = NULL;
freeparam(&shellparam);
- shellparam.malloc = 1;
+ shellparam.malloced = 1;
shellparam.nparam = nparam;
shellparam.p = newparam;
#if ENABLE_ASH_GETOPTS
@@ -9094,7 +9185,7 @@ shiftcmd(int argc, char **argv)
INT_OFF;
shellparam.nparam -= n;
for (ap1 = shellparam.p; --n >= 0; ap1++) {
- if (shellparam.malloc)
+ if (shellparam.malloced)
free(*ap1);
}
ap2 = shellparam.p;
@@ -10971,7 +11062,7 @@ dotcmd(int argc, char **argv)
if (argc > 2) {
saveparam = shellparam;
- shellparam.malloc = 0;
+ shellparam.malloced = 0;
shellparam.nparam = argc - 2;
shellparam.p = argv + 2;
};
@@ -12741,7 +12832,7 @@ procargs(int argc, char **argv)
shellparam.optind = 1;
shellparam.optoff = -1;
#endif
- /* assert(shellparam.malloc == 0 && shellparam.nparam == 0); */
+ /* assert(shellparam.malloced == 0 && shellparam.nparam == 0); */
while (*xargv) {
shellparam.nparam++;
xargv++;
@@ -12805,6 +12896,13 @@ int ash_main(int argc, char **argv)
struct jmploc jmploc;
struct stackmark smark;
+ /* Initialize global data */
+ INIT_G_misc();
+ INIT_G_memstack();
+ INIT_G_var();
+ INIT_G_alias();
+ INIT_G_cmdtable();
+
#if PROFILE
monitor(4, etext, profile_buf, sizeof(profile_buf), 50);
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 23:52:04 +0000