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hush: int->smallint for flag vars; make some names more "greppable"

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This commit is contained in:
Denis Vlasenko 2007-10-01 10:00:45 +00:00
parent 8412d7959a
commit ff0976248a
1 changed files with 32 additions and 28 deletions
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60
shell/hush.c
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@ -246,7 +246,7 @@ struct redir_struct {
redir_type type; /* type of redirection */ redir_type type; /* type of redirection */
int fd; /* file descriptor being redirected */ int fd; /* file descriptor being redirected */
int dup; /* -1, or file descriptor being duplicated */ int dup; /* -1, or file descriptor being duplicated */
glob_t word; /* *word.gl_pathv is the filename */ glob_t glob_word; /* *word.gl_pathv is the filename */
}; };
struct child_prog { struct child_prog {
@ -304,8 +304,8 @@ typedef struct {
char *data; char *data;
int length; int length;
int maxlen; int maxlen;
int quote; smallint o_quote;
int nonnull; smallint nonnull;
} o_string; } o_string;
#define NULL_O_STRING {NULL,0,0,0,0} #define NULL_O_STRING {NULL,0,0,0,0}
/* used for initialization: o_string foo = NULL_O_STRING; */ /* used for initialization: o_string foo = NULL_O_STRING; */
@ -1256,13 +1256,13 @@ static int setup_redirects(struct child_prog *prog, int squirrel[])
struct redir_struct *redir; struct redir_struct *redir;
for (redir = prog->redirects; redir; redir = redir->next) { for (redir = prog->redirects; redir; redir = redir->next) {
if (redir->dup == -1 && redir->word.gl_pathv == NULL) { if (redir->dup == -1 && redir->glob_word.gl_pathv == NULL) {
/* something went wrong in the parse. Pretend it didn't happen */ /* something went wrong in the parse. Pretend it didn't happen */
continue; continue;
} }
if (redir->dup == -1) { if (redir->dup == -1) {
mode = redir_table[redir->type].mode; mode = redir_table[redir->type].mode;
openfd = open_or_warn(redir->word.gl_pathv[0], mode); openfd = open_or_warn(redir->glob_word.gl_pathv[0], mode);
if (openfd < 0) { if (openfd < 0) {
/* this could get lost if stderr has been redirected, but /* this could get lost if stderr has been redirected, but
bash and ash both lose it as well (though zsh doesn't!) */ bash and ash both lose it as well (though zsh doesn't!) */
@ -2162,9 +2162,9 @@ static int free_pipe(struct pipe *pi, int indent)
debug_printf_clean("%s redirect %d%s", indenter(indent), r->fd, redir_table[r->type].descrip); debug_printf_clean("%s redirect %d%s", indenter(indent), r->fd, redir_table[r->type].descrip);
if (r->dup == -1) { if (r->dup == -1) {
/* guard against the case >$FOO, where foo is unset or blank */ /* guard against the case >$FOO, where foo is unset or blank */
if (r->word.gl_pathv) { if (r->glob_word.gl_pathv) {
debug_printf_clean(" %s\n", *r->word.gl_pathv); debug_printf_clean(" %s\n", r->glob_word.gl_pathv[0]);
globfree(&r->word); globfree(&r->glob_word);
} }
} else { } else {
debug_printf_clean("&%d\n", r->dup); debug_printf_clean("&%d\n", r->dup);
@ -2216,6 +2216,10 @@ static int run_list(struct pipe *pi)
return rcode; return rcode;
} }
/* Whoever decided to muck with glob internal data is AN IDIOT! */
/* uclibc happily changed the way it works (and it has rights to do so!),
all hell broke loose (SEGVs) */
/* The API for glob is arguably broken. This routine pushes a non-matching /* The API for glob is arguably broken. This routine pushes a non-matching
* string into the output structure, removing non-backslashed backslashes. * string into the output structure, removing non-backslashed backslashes.
* If someone can prove me wrong, by performing this function within the * If someone can prove me wrong, by performing this function within the
@ -2769,9 +2773,9 @@ static int setup_redirect(struct p_context *ctx, int fd, redir_type style,
last_redir = redir; last_redir = redir;
redir = redir->next; redir = redir->next;
} }
redir = xmalloc(sizeof(struct redir_struct)); redir = xzalloc(sizeof(struct redir_struct));
redir->next = NULL; /* redir->next = NULL; */
redir->word.gl_pathv = NULL; /* redir->glob_word.gl_pathv = NULL; */
if (last_redir) { if (last_redir) {
last_redir->next = redir; last_redir->next = redir;
} else { } else {
@ -2924,7 +2928,7 @@ static int done_word(o_string *dest, struct p_context *ctx)
return 0; return 0;
} }
if (ctx->pending_redirect) { if (ctx->pending_redirect) {
glob_target = &ctx->pending_redirect->word; glob_target = &ctx->pending_redirect->glob_word;
} else { } else {
if (child->group) { if (child->group) {
syntax(NULL); syntax(NULL);
@ -3160,10 +3164,10 @@ static int process_command_subs(o_string *dest, struct p_context *ctx,
continue; continue;
} }
while (eol_cnt) { while (eol_cnt) {
b_addqchr(dest, '\n', dest->quote); b_addqchr(dest, '\n', dest->o_quote);
eol_cnt--; eol_cnt--;
} }
b_addqchr(dest, ch, dest->quote); b_addqchr(dest, ch, dest->o_quote);
} }
debug_printf("done reading from pipe, pclose()ing\n"); debug_printf("done reading from pipe, pclose()ing\n");
@ -3224,7 +3228,7 @@ static const char *lookup_param(const char *src)
static int handle_dollar(o_string *dest, struct p_context *ctx, struct in_str *input) static int handle_dollar(o_string *dest, struct p_context *ctx, struct in_str *input)
{ {
int ch = b_peek(input); /* first character after the $ */ int ch = b_peek(input); /* first character after the $ */
unsigned char quote_mask = dest->quote ? 0x80 : 0; unsigned char quote_mask = dest->o_quote ? 0x80 : 0;
debug_printf_parse("handle_dollar entered: ch='%c'\n", ch); debug_printf_parse("handle_dollar entered: ch='%c'\n", ch);
if (isalpha(ch)) { if (isalpha(ch)) {
@ -3289,7 +3293,7 @@ static int handle_dollar(o_string *dest, struct p_context *ctx, struct in_str *i
return 1; return 1;
break; break;
default: default:
b_addqchr(dest, '$', dest->quote); b_addqchr(dest, '$', dest->o_quote);
} }
debug_printf_parse("handle_dollar return 0\n"); debug_printf_parse("handle_dollar return 0\n");
return 0; return 0;
@ -3304,9 +3308,9 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
redir_type redir_style; redir_type redir_style;
int next; int next;
/* Only double-quote state is handled in the state variable dest->quote. /* Only double-quote state is handled in the state variable dest->o_quote.
* A single-quote triggers a bypass of the main loop until its mate is * A single-quote triggers a bypass of the main loop until its mate is
* found. When recursing, quote state is passed in via dest->quote. */ * found. When recursing, quote state is passed in via dest->o_quote. */
debug_printf_parse("parse_stream entered, end_trigger='%s'\n", end_trigger); debug_printf_parse("parse_stream entered, end_trigger='%s'\n", end_trigger);
@ -3320,16 +3324,16 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
next = b_peek(input); next = b_peek(input);
} }
debug_printf_parse(": ch=%c (%d) m=%d quote=%d\n", debug_printf_parse(": ch=%c (%d) m=%d quote=%d\n",
ch, ch, m, dest->quote); ch, ch, m, dest->o_quote);
if (m == CHAR_ORDINARY if (m == CHAR_ORDINARY
|| (m != CHAR_SPECIAL && dest->quote) || (m != CHAR_SPECIAL && dest->o_quote)
) { ) {
if (ch == EOF) { if (ch == EOF) {
syntax("unterminated \""); syntax("unterminated \"");
debug_printf_parse("parse_stream return 1: unterminated \"\n"); debug_printf_parse("parse_stream return 1: unterminated \"\n");
return 1; return 1;
} }
b_addqchr(dest, ch, dest->quote); b_addqchr(dest, ch, dest->o_quote);
continue; continue;
} }
if (m == CHAR_IFS) { if (m == CHAR_IFS) {
@ -3347,7 +3351,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
} }
} }
if ((end_trigger && strchr(end_trigger, ch)) if ((end_trigger && strchr(end_trigger, ch))
&& !dest->quote && ctx->res_w == RES_NONE && !dest->o_quote && ctx->res_w == RES_NONE
) { ) {
debug_printf_parse("parse_stream return 0: end_trigger char found\n"); debug_printf_parse("parse_stream return 0: end_trigger char found\n");
return 0; return 0;
@ -3356,7 +3360,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
continue; continue;
switch (ch) { switch (ch) {
case '#': case '#':
if (dest->length == 0 && !dest->quote) { if (dest->length == 0 && !dest->o_quote) {
while (1) { while (1) {
ch = b_peek(input); ch = b_peek(input);
if (ch == EOF || ch == '\n') if (ch == EOF || ch == '\n')
@ -3364,7 +3368,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
b_getch(input); b_getch(input);
} }
} else { } else {
b_addqchr(dest, ch, dest->quote); b_addqchr(dest, ch, dest->o_quote);
} }
break; break;
case '\\': case '\\':
@ -3373,8 +3377,8 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
debug_printf_parse("parse_stream return 1: \\<eof>\n"); debug_printf_parse("parse_stream return 1: \\<eof>\n");
return 1; return 1;
} }
b_addqchr(dest, '\\', dest->quote); b_addqchr(dest, '\\', dest->o_quote);
b_addqchr(dest, b_getch(input), dest->quote); b_addqchr(dest, b_getch(input), dest->o_quote);
break; break;
case '$': case '$':
if (handle_dollar(dest, ctx, input) != 0) { if (handle_dollar(dest, ctx, input) != 0) {
@ -3398,7 +3402,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
break; break;
case '"': case '"':
dest->nonnull = 1; dest->nonnull = 1;
dest->quote = !dest->quote; dest->o_quote ^= 1; /* invert */
break; break;
#if ENABLE_HUSH_TICK #if ENABLE_HUSH_TICK
case '`': case '`':
@ -3561,7 +3565,7 @@ static int parse_and_run_stream(struct in_str *inp, int parse_flag)
b_reset(&temp); b_reset(&temp);
} }
temp.nonnull = 0; temp.nonnull = 0;
temp.quote = 0; temp.o_quote = 0;
inp->p = NULL; inp->p = NULL;
free_pipe_list(ctx.list_head, 0); free_pipe_list(ctx.list_head, 0);
} }