diff options
Diffstat (limited to 'iconv')
| -rw-r--r-- | iconv/iconvconfig.c | 55 |
1 files changed, 49 insertions, 6 deletions
diff --git a/iconv/iconvconfig.c b/iconv/iconvconfig.c index 3b457aae63..27b8b02dac 100644 --- a/iconv/iconvconfig.c +++ b/iconv/iconvconfig.c @@ -113,13 +113,25 @@ Create fastloading iconv module configuration file."); /* Strings for arguments in help texts. */ static const char args_doc[] = N_("[DIR...]"); +/* Prototype for option handler. */ +static error_t parse_opt (int key, char *arg, struct argp_state *state); + /* Function to print some extra text in the help message. */ static char *more_help (int key, const char *text, void *input); +/* Definitions of arguments for argp functions. */ +#define OPT_PREFIX 300 +static const struct argp_option options[] = +{ + { "prefix", OPT_PREFIX, "PATH", 0, N_("Prefix used for all file accesses") }, + { NULL, 0, NULL, 0, NULL } +}; + /* Data structure to communicate with argp functions. */ static struct argp argp = { - NULL, NULL, args_doc, doc, NULL, more_help + + options, parse_opt, args_doc, doc, NULL, more_help }; @@ -145,6 +157,11 @@ static void generate_name_info (void); static int write_output (void); +/* Prefix to be used for all file accesses. */ +static const char *prefix = ""; +/* Its length. */ +static size_t prefix_len; + /* Search tree of the modules we know. */ static void *modules; @@ -311,6 +328,23 @@ main (int argc, char *argv[]) } +/* Handle program arguments. */ +static error_t +parse_opt (int key, char *arg, struct argp_state *state) +{ + switch (key) + { + case OPT_PREFIX: + prefix = arg; + prefix_len = strlen (prefix); + break; + default: + return ARGP_ERR_UNKNOWN; + } + return 0; +} + + static char * more_help (int key, const char *text, void *input) { @@ -590,6 +624,7 @@ static int handle_dir (const char *dir) { char *infile; + char *cp; FILE *fp; char *line = NULL; size_t linelen = 0; @@ -603,8 +638,10 @@ handle_dir (const char *dir) newp[dirlen] = '\0'; } - infile = (char *) alloca (dirlen + sizeof "gconv-modules"); - strcpy (mempcpy (infile, dir, dirlen), "gconv-modules"); + cp = infile = (char *) alloca (prefix_len + dirlen + sizeof "gconv-modules"); + if (dir[0] == '/') + cp = mempcpy (cp, prefix, prefix_len); + strcpy (mempcpy (cp, dir, dirlen), "gconv-modules"); fp = fopen (infile, "r"); if (fp == NULL) @@ -966,7 +1003,9 @@ write_output (void) struct iovec iov[6]; static const gidx_t null_word; size_t total; - char tmpfname[sizeof (GCONV_MODULES_CACHE) + strlen (".XXXXXX")]; + char tmpfname[prefix_len + sizeof (GCONV_MODULES_CACHE) + + strlen (".XXXXXX")]; + char finalname[prefix_len + sizeof (GCONV_MODULES_CACHE)]; /* Function to insert the names. */ static void name_insert (const void *nodep, VISIT value, int level) @@ -993,11 +1032,15 @@ write_output (void) } /* Open the output file. */ - strcpy (stpcpy (tmpfname, GCONV_MODULES_CACHE), ".XXXXXX"); + assert (GCONV_MODULES_CACHE[0] == '/'); + strcpy (stpcpy (mempcpy (tmpfname, prefix, prefix_len), GCONV_MODULES_CACHE), + ".XXXXXX"); fd = mkstemp (tmpfname); if (fd == -1) return 1; + strcpy (mempcpy (finalname, prefix, prefix_len), GCONV_MODULES_CACHE); + /* Create the string table. */ string_table = strtabfinalize (strtab, &string_table_size); @@ -1150,7 +1193,7 @@ write_output (void) /* The file was created with mode 0600. Make it world-readable. */ || fchmod (fd, 0644) != 0 /* Rename the file, possibly replacing an old one. */ - || rename (tmpfname, GCONV_MODULES_CACHE) != 0) + || rename (tmpfname, finalname) != 0) { int save_errno = errno; close (fd); |