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mount: cat /proc/mounts if no arguments given 

Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>
This commit is contained in:
Hiltjo Posthuma 2014-04-04 19:41:37 +02:00 committed by sin
parent e71d009bd1
commit 5f4d18d4fa
1 changed files with 27 additions and 2 deletions
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29
mount.c
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@ -101,6 +101,23 @@ usage(void)
argv0);
}
static int
catfile(FILE *in, FILE *out)
{
char buf[BUFSIZ];
size_t bytesread;
while(1) {
if(feof(in))
break;
bytesread = fread(buf, 1, sizeof(buf), in);
if(ferror(in))
return 0;
fwrite(buf, 1, bytesread, out);
}
return 1;
}
int
main(int argc, char *argv[])
{
@ -140,8 +157,16 @@ main(int argc, char *argv[])
usage();
} ARGEND;
if(argc < 1 && aflag == 0)
usage();
if(argc < 1 && aflag == 0) {
if(!(fp = fopen(files[0], "r")))
eprintf("fopen %s:", files[0]);
if(catfile(fp, stdout) != 1) {
weprintf("error while reading %s:", files[0]);
status = EXIT_FAILURE;
}
fclose(fp);
return status;
}
if(aflag == 1)
goto mountall;