unixFileName.h File Reference

#include <libComAPI.h>

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Macros
#define	OSI_PATH_LIST_SEPARATOR   ":"
#define	OSI_PATH_SEPARATOR   "/"

Functions
LIBCOM_API char *	epicsGetExecName (void)
LIBCOM_API char *	epicsGetExecDir (void)

Macro Definition Documentation

#define OSI_PATH_LIST_SEPARATOR   ":"

Definition at line 23 of file unixFileName.h.

#define OSI_PATH_SEPARATOR   "/"

Definition at line 24 of file unixFileName.h.

Function Documentation

LIBCOM_API char* epicsGetExecDir

(

void

)

Return the absolute path of the directory containing the current executable.

Returns

NULL or the path. Caller must free()

Definition at line 38 of file osdgetexec.c.

{
    char *ret = epicsGetExecName();
    if(ret) {
        char *sep = strrchr(ret, '/');
        if(sep) {
            /* nil the charactor after the / */
            sep[1] = '\0';
        }
    }
    return ret;
}

LIBCOM_API char* epicsGetExecName

(

void

)

Return the absolute path of the current executable.

Returns

NULL or the path. Caller must free()

Definition at line 9 of file osdgetexec.c.

{
    uint32_t max = 64u;
    char *ret = NULL;

    while(1) {
        char *temp = realloc(ret, max);
        if(!temp) {
            /* we treat alloc failure as terminal */
            free(ret);
            ret = NULL;
            break;
        }
        ret = temp;

        /* cf. "man 3 dyld" */
        if(_NSGetExecutablePath(ret, &max)==0) {
            /* max left unchanged */
            ret[max-1] = '\0';
            break;
        }
        /* max has been updated with required size */
    }

    /* TODO: _NSGetExecutablePath() doesn't follow symlinks */

    return ret;
}