From e6d152980fb19a38525ed107a31d0b8997ab549e Mon Sep 17 00:00:00 2001 From: "A. Wilcox" Date: Tue, 21 Aug 2018 05:46:07 -0500 Subject: getconf: Support path variables --- getconf/getconf.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 56 insertions(+), 1 deletion(-) (limited to 'getconf/getconf.c') diff --git a/getconf/getconf.c b/getconf/getconf.c index 8ede268..01265f1 100644 --- a/getconf/getconf.c +++ b/getconf/getconf.c @@ -393,6 +393,27 @@ const var_map_t limit_vars[] = { const int limit_count = sizeof(limit_vars) / sizeof(limit_vars[0]); +const var_map_t path_vars[] = { + { "FILESIZEBITS", _PC_FILESIZEBITS }, + { "LINK_MAX", _PC_LINK_MAX }, + { "MAX_CANON", _PC_MAX_CANON }, + { "MAX_INPUT", _PC_MAX_INPUT }, + { "NAME_MAX", _PC_NAME_MAX }, + { "PATH_MAX", _PC_PATH_MAX }, + { "PIPE_BUF", _PC_PIPE_BUF }, + { "POSIX2_SYMLINKS", _PC_2_SYMLINKS }, + { "POSIX_ALLOC_SIZE_MIN", _PC_ALLOC_SIZE_MIN }, + { "POSIX_REC_INCR_XFER_SIZE", _PC_REC_INCR_XFER_SIZE }, + { "POSIX_REC_MAX_XFER_SIZE", _PC_REC_MAX_XFER_SIZE }, + { "POSIX_REC_MIN_XFER_SIZE", _PC_REC_MIN_XFER_SIZE }, + { "POSIX_REC_XFER_ALIGN", _PC_REC_XFER_ALIGN }, + { "SYMLINK_MAX", _PC_SYMLINK_MAX } +}; + + +const int path_count = sizeof(path_vars) / sizeof (path_vars[0]); + + int do_system_var(char *environment, char *system_var) { int var; @@ -499,7 +520,41 @@ int do_system_var(char *environment, char *system_var) int do_path_var(char *environment, char *path_var, char *pathname) { - return -1; + int var; + + for(var = 0; var < path_count; var++) + { + long int result; + + if(strcasecmp(path_vars[var].variable, path_var) != 0) + { + continue; + } + + if(path_vars[var].value == _UNDEFINED_VARIABLE_) + { + printf("undefined\n"); + return 0; + } + + errno = 0; + + result = pathconf(pathname, path_vars[var].value); + if(errno != 0) + { + /* We know that this is a valid symbol, so don't break + * expectations. + */ + printf("undefined\n"); + return 0; + } + + printf("%ld\n", result); + return 0; + } + + fprintf(stderr, "%s: not a recognised system variable\n", path_var); + return EINVAL; } -- cgit v1.2.3-70-g09d2