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depmod: return error when index is truncated due to ENOSPC

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Before:
=======
[lucas@vader kmod]$ sudo depmod
[lucas@vader kmod]$ echo $?
0
[lucas@vader kmod]$ ls -l /lib/modules/$(uname -r)
total 12
drwxr-xr-x 8 root root   160 Jun 13 11:05 kernel
-rw-r--r-- 1 root root 12288 Jun 15 21:29 modules.alias
-rw-r--r-- 1 root root     0 Jun 15 21:29 modules.alias.bin
-rw-r--r-- 1 root root     0 Jun 15 21:29 modules.dep
-rw-r--r-- 1 root root     0 Jun 15 21:29 modules.dep.bin
-rw-r--r-- 1 root root     0 Jun 15 21:29 modules.devname
-rw-r--r-- 1 root root     0 Jun 15 21:29 modules.softdep
-rw-r--r-- 1 root root     0 Jun 15 21:29 modules.symbols
-rw-r--r-- 1 root root     0 Jun 15 21:29 modules.symbols.bin

Note that modules.alias is truncated and the other have size == 0

After:
======

[lucas@vader kmod]$ sudo ./tools/depmod
WARNING: could not open /lib/modules/3.5.0-rc2-demarchi-00028-g94fa83c/modules.order: No such file or directory
ERROR: Could not create index: output truncated: No space left on device
[lucas@vader kmod]$ echo $?
1
This commit is contained in:
Lucas De Marchi 2012-06-15 20:13:31 -03:00
parent 015946da0c
commit a4fb97a71e
1 changed files with 9 additions and 0 deletions
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9
tools/depmod.c
View File

@ -2237,6 +2237,7 @@ static int depmod_output(struct depmod *depmod, FILE *out)
FILE *fp = out;
char tmp[NAME_MAX] = "";
int r;
long eof;
if (fp == NULL) {
int flags = O_CREAT | O_TRUNC | O_WRONLY;
@ -2262,6 +2263,7 @@ static int depmod_output(struct depmod *depmod, FILE *out)
if (fp == out)
continue;
eof = ftell(fp);
fclose(fp);
if (r < 0) {
if (unlinkat(dfd, tmp, 0) != 0)
@ -2280,6 +2282,13 @@ static int depmod_output(struct depmod *depmod, FILE *out)
dname, tmp, dname, itr->name);
break;
}
if (eof == EOF) {
err = -ENOSPC;
ERR("Could not create index: output truncated: %s\n",
strerror(-err));
break;
}
}
if (dfd >= 0)