diff options
Diffstat (limited to 'shell/hush.c')
| -rw-r--r-- | shell/hush.c | 56 |
1 files changed, 54 insertions, 2 deletions
diff --git a/shell/hush.c b/shell/hush.c index 79d7a53..8ba48de 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -361,6 +361,7 @@ #define BASH_SUBSTR ENABLE_HUSH_BASH_COMPAT #define BASH_SOURCE ENABLE_HUSH_BASH_COMPAT #define BASH_HOSTNAME_VAR ENABLE_HUSH_BASH_COMPAT +#define BASH_LINENO_VAR ENABLE_HUSH_BASH_COMPAT #define BASH_TEST2 (ENABLE_HUSH_BASH_COMPAT && ENABLE_HUSH_TEST) #define BASH_READ_D ENABLE_HUSH_BASH_COMPAT @@ -612,6 +613,9 @@ typedef enum redir_type { struct command { pid_t pid; /* 0 if exited */ int assignment_cnt; /* how many argv[i] are assignments? */ +#if BASH_LINENO_VAR + unsigned lineno; +#endif smallint cmd_type; /* CMD_xxx */ #define CMD_NORMAL 0 #define CMD_SUBSHELL 1 @@ -931,6 +935,13 @@ struct globals { unsigned handled_SIGCHLD; smallint we_have_children; #endif +#if BASH_LINENO_VAR + unsigned lineno; + char *lineno_var; +# define G_lineno_var G.lineno_var +#else +# define G_lineno_var ((char*)NULL) +#endif struct FILE_list *FILE_list; /* Which signals have non-DFL handler (even with no traps set)? * Set at the start to: @@ -2135,6 +2146,13 @@ static int set_local_var(char *str, unsigned flags) } name_len = eq_sign - str + 1; /* including '=' */ +#if BASH_LINENO_VAR + if (G.lineno_var) { + if (name_len == 7 && strncmp("LINENO", str, 6) == 0) + G.lineno_var = NULL; + } +#endif + var_pp = &G.top_var; while ((cur = *var_pp) != NULL) { if (strncmp(cur->varstr, str, name_len) != 0) { @@ -2256,10 +2274,16 @@ static int unset_local_var_len(const char *name, int name_len) if (!name) return EXIT_SUCCESS; + #if ENABLE_HUSH_GETOPTS if (name_len == 6 && strncmp(name, "OPTIND", 6) == 0) G.getopt_count = 0; #endif +#if BASH_LINENO_VAR + if (name_len == 6 && G.lineno_var && strncmp(name, "LINENO", 6) == 0) + G.lineno_var = NULL; +#endif + var_pp = &G.top_var; while ((cur = *var_pp) != NULL) { if (strncmp(cur->varstr, name, name_len) == 0 && cur->varstr[name_len] == '=') { @@ -2578,6 +2602,10 @@ static int i_getch(struct in_str *i) out: debug_printf("file_get: got '%c' %d\n", ch, ch); i->last_char = ch; +#if BASH_LINENO_VAR + if (ch == '\n') + G.lineno++; +#endif return ch; } @@ -3460,6 +3488,9 @@ static int done_command(struct parse_context *ctx) ctx->command = command = &pi->cmds[pi->num_cmds]; clear_and_ret: memset(command, 0, sizeof(*command)); +#if BASH_LINENO_VAR + command->lineno = G.lineno; +#endif return pi->num_cmds; /* used only for 0/nonzero check */ } @@ -6520,8 +6551,13 @@ static void parse_and_run_string(const char *s) static void parse_and_run_file(FILE *f) { struct in_str input; + unsigned sv; + setup_file_in_str(&input, f); + sv = G.lineno; + G.lineno = 1; parse_and_run_stream(&input, ';'); + G.lineno = sv; } #if ENABLE_HUSH_TICK @@ -8068,6 +8104,9 @@ static NOINLINE int run_pipe(struct pipe *pi) char **new_env = NULL; struct variable *old_vars = NULL; + if (G_lineno_var) + strcpy(G_lineno_var + sizeof("LINENO=")-1, utoa(command->lineno)); + if (argv[command->assignment_cnt] == NULL) { /* Assignments, but no command */ /* Ensure redirects take effect (that is, create files). @@ -8272,6 +8311,9 @@ static NOINLINE int run_pipe(struct pipe *pi) if (cmd_no < pi->num_cmds) xpiped_pair(pipefds); + if (G_lineno_var) + strcpy(G_lineno_var + sizeof("LINENO=")-1, utoa(command->lineno)); + command->pid = BB_MMU ? fork() : vfork(); if (!command->pid) { /* child */ #if ENABLE_HUSH_JOB @@ -8907,17 +8949,19 @@ int hush_main(int argc, char **argv) #if !BB_MMU G.argv0_for_re_execing = argv[0]; #endif + /* Deal with HUSH_VERSION */ + debug_printf_env("unsetenv '%s'\n", "HUSH_VERSION"); + unsetenv("HUSH_VERSION"); /* in case it exists in initial env */ shell_ver = xzalloc(sizeof(*shell_ver)); shell_ver->flg_export = 1; shell_ver->flg_read_only = 1; /* Code which handles ${var<op>...} needs writable values for all variables, * therefore we xstrdup: */ shell_ver->varstr = xstrdup(hush_version_str); + /* Create shell local variables from the values * currently living in the environment */ - debug_printf_env("unsetenv '%s'\n", "HUSH_VERSION"); - unsetenv("HUSH_VERSION"); /* in case it exists in initial env */ G.top_var = shell_ver; cur_var = G.top_var; e = environ; @@ -8983,6 +9027,14 @@ int hush_main(int argc, char **argv) */ #endif +#if BASH_LINENO_VAR + if (BASH_LINENO_VAR) { + char *p = xasprintf("LINENO=%*s", (int)(sizeof(int)*3), ""); + set_local_var(p, /*flags*/ 0); + G.lineno_var = p; /* can't assign before set_local_var("LINENO=...") */ + } +#endif + #if ENABLE_FEATURE_EDITING G.line_input_state = new_line_input_t(FOR_SHELL); #endif |