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Diffstat (limited to 'iconv')
-rw-r--r--iconv/iconvconfig.c55
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);