diff options
Diffstat (limited to 'Src/init.c')
| -rw-r--r-- | Src/init.c | 146 |
1 files changed, 135 insertions, 11 deletions
diff --git a/Src/init.c b/Src/init.c index 68621a0ad..ec21521b1 100644 --- a/Src/init.c +++ b/Src/init.c @@ -246,6 +246,9 @@ loop(int toplevel, int justonce) static int restricted; +/* original argv[0]. This is already metafied */ +static char *argv0; + /**/ static void parseargs(char *zsh_name, char **argv, char **runscript, char **cmdptr, @@ -257,7 +260,7 @@ parseargs(char *zsh_name, char **argv, char **runscript, char **cmdptr, if (**argv == '-') flags |= PARSEARGS_LOGIN; - argzero = posixzero = *argv++; + argv0 = argzero = posixzero = *argv++; SHIN = 0; /* @@ -697,11 +700,14 @@ init_io(char *cmd) * process group leader. */ mypid = (zlong)getpid(); - if (opts[MONITOR] && (SHTTY != -1)) { - origpgrp = GETPGRP(); - acquire_pgrp(); /* might also clear opts[MONITOR] */ - } else - opts[MONITOR] = 0; + if (opts[MONITOR]) { + if (SHTTY == -1) + opts[MONITOR] = 0; + else if (!origpgrp) { + origpgrp = GETPGRP(); + acquire_pgrp(); /* might also clear opts[MONITOR] */ + } + } #else opts[MONITOR] = 0; #endif @@ -893,6 +899,106 @@ init_term(void) return 1; } +/* + * Get (or guess) the absolute pathname of the current zsh exeutable. + * Try OS-specific method, and if it fails, guess the absolute pathname + * from argv0, pwd, and PATH. 'name' and 'cwd' are unmetefied versions of + * argv0 and pwd. + * Returns a zalloc()ed string (not metafied), or NULL if failed. + */ +#ifdef __APPLE__ +#include <mach-o/dyld.h> +#endif + +/**/ +static char * +getmypath(const char *name, const char *cwd) +{ + char *buf; + int namelen; + + if (!name) + return NULL; + if (*name == '-') + ++name; + if ((namelen = strlen(name)) == 0) + return NULL; +#if defined(__APPLE__) + { + uint32_t n = PATH_MAX; + int ret; + buf = (char *)zalloc(PATH_MAX); + if ((ret = _NSGetExecutablePath(buf, &n)) < 0) { + /* try again with increased buffer size */ + buf = (char *)zrealloc(buf, n); + ret = _NSGetExecutablePath(buf, &n); + } + if (ret == 0 && strlen(buf) > 0) + return buf; + else + free(buf); + } +#elif defined(PROC_SELF_EXE) + { + ssize_t n; + buf = (char *)zalloc(PATH_MAX); + n = readlink(PROC_SELF_EXE, buf, PATH_MAX); + if (n > 0 && n < PATH_MAX) { + buf[n] = '\0'; + return buf; + } + else + free(buf); + } +#endif + /* guess the absolute pathname of 'name' */ + if (name[namelen-1] == '/') /* name should not end with '/' */ + return NULL; + else if (name[0] == '/') { + /* name is already an absolute pathname */ + return ztrdup(name); + } + else if (strchr(name, '/')) { + /* relative path */ + if (!cwd) + return NULL; + buf = (char *)zalloc(strlen(cwd) + namelen + 2); + sprintf(buf, "%s/%s", cwd, name); + return buf; + } +#ifdef HAVE_REALPATH + else { + /* search each dir in PARH */ + const char *path, *sep; + char *real, *try; + int pathlen, dirlen; + + path = getenv("PATH"); + if (!path || (pathlen = strlen(path)) == 0) + return NULL; + /* for simplicity, allocate buf even if REALPATH_ACCEPTS_NULL is on */ + buf = (char *)zalloc(PATH_MAX); + try = (char *)zalloc(pathlen + namelen + 2); + do { + sep = strchr(path, ':'); + dirlen = sep ? sep - path : strlen(path); + strncpy(try, path, dirlen); + try[dirlen] = '/'; + try[dirlen+1] = '\0'; + strcat(try, name); + real = realpath(try, buf); + if (sep) + path = sep + 1; + } while (!real && sep); + free(try); + if (!real) + free(buf); + return real; /* this may be NULL */ + } +#endif + return NULL; +} + /* Initialize lots of global variables and hash tables */ /**/ @@ -1084,9 +1190,12 @@ setupvals(char *cmd, char *runscript, char *zsh_name) ztrdup(DEFAULT_IFS_SH) : ztrdup(DEFAULT_IFS); wordchars = ztrdup(DEFAULT_WORDCHARS); postedit = ztrdup(""); - zunderscore = (char *) zalloc(underscorelen = 32); - underscoreused = 1; - *zunderscore = '\0'; + /* If _ is set in environment then initialize our $_ by copying it */ + zunderscore = getenv("_"); + zunderscore = zunderscore ? metafy(zunderscore, -1, META_DUP) : ztrdup(""); + underscoreused = strlen(zunderscore) + 1; + underscorelen = (underscoreused + 31) & ~31; + zunderscore = (char *)zrealloc(zunderscore, underscorelen); zoptarg = ztrdup(""); zoptind = 1; @@ -1106,8 +1215,8 @@ setupvals(char *cmd, char *runscript, char *zsh_name) #ifdef USE_GETPWUID if ((pswd = getpwuid(cached_uid))) { if (EMULATION(EMULATE_ZSH)) - home = metafy(pswd->pw_dir, -1, META_DUP); - cached_username = ztrdup(pswd->pw_name); + home = ztrdup_metafy(pswd->pw_dir); + cached_username = ztrdup_metafy(pswd->pw_name); } else #endif /* USE_GETPWUID */ @@ -1192,6 +1301,18 @@ setupvals(char *cmd, char *runscript, char *zsh_name) /* Colour sequences for outputting colours in prompts and zle */ set_default_colour_sequences(); + /* ZSH_EXEPATH */ + { + char *mypath, *exename, *cwd; + exename = unmetafy(ztrdup(argv0), NULL); + cwd = pwd ? unmetafy(ztrdup(pwd), NULL) : NULL; + mypath = getmypath(exename, cwd); + free(exename); + free(cwd); + if (mypath) { + setsparam("ZSH_EXEPATH", metafy(mypath, -1, META_REALLOC)); + } + } if (cmd) setsparam("ZSH_EXECUTION_STRING", ztrdup(cmd)); if (runscript) @@ -1261,6 +1382,9 @@ setupshin(char *runscript) void init_signals(void) { + sigtrapped = (int *) hcalloc(TRAPCOUNT * sizeof(int)); + siglists = (Eprog *) hcalloc(TRAPCOUNT * sizeof(Eprog)); + if (interact) { int i; signal_setmask(signal_mask(0)); |