saveargs.c File Reference

#include <schily/mconfig.h>
#include <schily/standard.h>
#include <schily/string.h>
#include <schily/stdlib.h>
#include <schily/avoffset.h>
#include <schily/schily.h>
#include <schily/dlfcn.h>

Include dependency graph for saveargs.c:

Go to the source code of this file.

Functions
LOCAL void save_av0	__PR ((char *av0))
LOCAL void init_progname	__PR ((void))
EXPORT void	save_args (int ac, av)
LOCAL void	save_av0 (char *av0)
EXPORT int	saved_ac ()
EXPORT char **	saved_av ()
EXPORT char *	saved_av0 ()
EXPORT void	set_progname (char *name) const
EXPORT char *	get_progname ()
EXPORT char *	get_progpath ()
LOCAL void	init_progname ()
LOCAL void	init_arginfo ()

Variables
static int	ac_saved
static char **	av_saved
static char *	av0_saved
static char *	av0_name_saved
static char *	progpath_saved
static char *	progname_saved
static char	av0_sp [32]
static char	prn_sp [32]
static char	dfl_str [] = "?"

Function Documentation

__PR() [1/2]

LOCAL void save_av0 __PR

(

(char *av0)

)

__PR() [2/2]

LOCAL void init_progname __PR

(

(void)

)

get_progname()

EXPORT char * get_progname

(

)

Definition at line 151 of file saveargs.c.

{
    if (progname_saved)
        return (progname_saved);
    if (av0_name_saved == NULL)
        init_progname();
    if (av0_name_saved)
        return (av0_name_saved);
    return (dfl_str);
}

Referenced by _comerr(), and searchfileinpath().

get_progpath()

EXPORT char * get_progpath

(

)

Definition at line 163 of file saveargs.c.

{
    if (progpath_saved)
        return (progpath_saved);
    if (av0_saved == NULL)
        init_progname();
    if (av0_saved)
        return (av0_saved);
    return (dfl_str);
}

init_arginfo()

LOCAL void init_arginfo

(

)

Definition at line 208 of file saveargs.c.

{
#if defined(HAVE_DLINFO) && defined(HAVE_DLOPEN_IN_LIBC) && defined(RTLD_DI_ARGSINFO)
    Dl_argsinfo args;
 
    if (dlinfo(RTLD_SELF, RTLD_DI_ARGSINFO, &args) < 0 ||
        args.dla_argc <= 0 ||
        args.dla_argv[0] == NULL)
        return;
 
    if (av_saved == NULL)
        save_args(args.dla_argc, args.dla_argv);
#endif
}

Referenced by init_progname(), saved_ac(), saved_av(), and saved_av0().

init_progname()

LOCAL void init_progname

(

)

Definition at line 175 of file saveargs.c.

{
#if defined(HAVE_SCANSTACK) || defined(HAVE_GETPROGNAME)
    char    *progname;
#endif
 
    if (av0_name_saved == NULL)
        init_arginfo();
    if (av0_name_saved)
        return;
#ifdef  HAVE_GETPROGNAME
    progname = (char *)getprogname();
    if (progname) {
        save_av0(progname);
        return;
    }
#endif
#ifdef  HAVE_VAR___PROGNAME
    if (__progname_full) {
        save_av0(__progname_full);
        return;
    }
#endif
#ifdef  HAVE_SCANSTACK
    progname = getav0();        /* scan stack to get argv[0] */
    if (progname) {
        save_av0(progname);
        return;
    }
#endif
}

Referenced by get_progname(), and get_progpath().

save_args()

EXPORT void save_args	(	int	ac,
		av
	)

Definition at line 58 of file saveargs.c.

{
    ac_saved = ac;
    av_saved = av;
    save_av0(av[0]);
}

Referenced by init_arginfo(), and main().

save_av0()

LOCAL void save_av0

(

char *

av0

)

Definition at line 68 of file saveargs.c.

{
    int slen;
    char    *p;
 
    if (av0_saved && av0_saved != av0_sp)
        free(av0_saved);
 
    slen = strlen(av0) + 1;
 
    if (slen <= (int)sizeof (av0_sp))
        av0_saved = av0_sp;
    else
        av0_saved = malloc(slen);
 
    if (av0_saved) {
        strcpy(av0_saved, av0);
        av0 = av0_saved;
    }
 
    if ((p = strrchr(av0, '/')) == NULL)
        av0_name_saved = av0;
    else
        av0_name_saved = ++p;
}

Referenced by init_progname(), and save_args().

saved_ac()

EXPORT int saved_ac

(

)

Definition at line 96 of file saveargs.c.

{
    if (av_saved == NULL)
        init_arginfo();
 
    return (ac_saved);
}

Referenced by vers_write().

saved_av()

EXPORT char ** saved_av

(

)

Definition at line 105 of file saveargs.c.

{
    if (av_saved == NULL)
        init_arginfo();
 
    return (av_saved);
}

Referenced by vers_write().

saved_av0()

EXPORT char * saved_av0

(

)

Definition at line 114 of file saveargs.c.

{
    if (av0_saved == NULL)
        init_arginfo();
 
    return (av0_saved);
}

set_progname()

EXPORT void set_progname

(

char *

name

)

const

Definition at line 123 of file saveargs.c.

{
    int slen;
    char    *p;
 
    if (progpath_saved && progpath_saved != prn_sp)
        free(progpath_saved);
 
    slen = strlen(name) + 1;
 
    if (slen <= sizeof (prn_sp))
        progpath_saved = prn_sp;
    else
        progpath_saved = malloc(slen);
 
    if (progpath_saved) {
        strcpy(progpath_saved, name);
        name = progpath_saved;
    }
 
    if ((p = strrchr(name, '/')) == NULL)
        progname_saved = (char *)name;
    else
        progname_saved = ++p;
}

Variable Documentation

ac_saved

int ac_saved

static

Definition at line 42 of file saveargs.c.

Referenced by save_args(), and saved_ac().

av0_name_saved

char* av0_name_saved

static

Definition at line 45 of file saveargs.c.

Referenced by get_progname(), init_progname(), and save_av0().

av0_saved

char* av0_saved

static

Definition at line 44 of file saveargs.c.

Referenced by get_progpath(), save_av0(), and saved_av0().

av0_sp

char av0_sp[32]

static

Definition at line 49 of file saveargs.c.

Referenced by save_av0().

av_saved

char** av_saved

static

Definition at line 43 of file saveargs.c.

Referenced by init_arginfo(), save_args(), saved_ac(), and saved_av().

dfl_str

char dfl_str[] = "?"

static

Definition at line 51 of file saveargs.c.

Referenced by get_progname(), and get_progpath().

prn_sp

char prn_sp[32]

static

Definition at line 50 of file saveargs.c.

Referenced by set_progname().

progname_saved

char* progname_saved

static

Definition at line 47 of file saveargs.c.

Referenced by get_progname(), and set_progname().

progpath_saved

char* progpath_saved

static

Definition at line 46 of file saveargs.c.

Referenced by get_progpath(), and set_progname().