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Fixed ln, df, and removed redundant stuff from mtab.

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This commit is contained in:
Eric Andersen 1999-11-06 06:07:27 +00:00
parent bc34190694
commit 29d2e362de
10 changed files with 127 additions and 175 deletions
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7
Changelog
View File

@ -1,5 +1,12 @@
0.33
* Fixed a bug where init could hang instead of rebooting.
* Removed some debugging noise from init.c
* Fixed ln so it works now (it was very broken).
* Fixed df so it won't segfault when there is no /etc/fstab,
* If BB_MTAB is not defined, df and mount will whine if /etc/fstab
is not installed (since they cannot fixup "/dev/root" to
state the real root device name)
* merged some redundant code from mtab.c/df.c into utility.c
0.32
* More changes -- many thanks to Lineo for paying me to work on

54
coreutils/df.c
View File

@ -38,6 +38,7 @@ static int df(char *device, const char *mountPoint)
struct statfs s;
long blocks_used;
long blocks_percent_used;
struct fstab* fstabItem;
if (statfs(mountPoint, &s) != 0) {
perror(mountPoint);
@ -48,9 +49,12 @@ static int df(char *device, const char *mountPoint)
blocks_used = s.f_blocks - s.f_bfree;
blocks_percent_used = (long)
(blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
if (strcmp(device, "/dev/root") == 0)
device = (getfsfile("/"))->fs_spec;
/* Note that if /etc/fstab is missing, libc can't fix up /dev/root for us */
if (strcmp (device, "/dev/root") == 0) {
fstabItem = getfsfile ("/");
if (fstabItem != NULL)
device = fstabItem->fs_spec;
}
printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
device,
(long) (s.f_blocks * (s.f_bsize / 1024.0)),
@ -63,52 +67,14 @@ static int df(char *device, const char *mountPoint)
return 0;
}
/*
* Given a block device, find the mount table entry if that block device
* is mounted.
*
* Given any other file (or directory), find the mount table entry for its
* filesystem.
*/
extern struct mntent *findMountPoint(const char *name, const char *table)
{
struct stat s;
dev_t mountDevice;
FILE *mountTable;
struct mntent *mountEntry;
if (stat(name, &s) != 0)
return 0;
if ((s.st_mode & S_IFMT) == S_IFBLK)
mountDevice = s.st_rdev;
else
mountDevice = s.st_dev;
if ((mountTable = setmntent(table, "r")) == 0)
return 0;
while ((mountEntry = getmntent(mountTable)) != 0) {
if (strcmp(name, mountEntry->mnt_dir) == 0
|| strcmp(name, mountEntry->mnt_fsname) == 0) /* String match. */
break;
if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice) /* Match the device. */
break;
if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice) /* Match the directory's mount point. */
break;
}
endmntent(mountTable);
return mountEntry;
}
extern int df_main(int argc, char **argv)
{
printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
"1k-blocks", "Used", "Available", "Use%", "Mounted on");
/* Only compiled in if BB_MTAB is not defined */
whine_if_fstab_is_missing();
if (argc > 1) {
struct mntent *mountEntry;
int status;

33
coreutils/ln.c
View File

@ -27,23 +27,21 @@
#include <errno.h>
static const char ln_usage[] = "ln [-s] [-f] original-name additional-name\n"
"\n"
"\tAdd a new name that refers to the same file as \"original-name\"\n"
"\n"
"\t-s:\tUse a \"symbolic\" link, instead of a \"hard\" link.\n"
"\t-f:\tRemove existing destination files.\n";
static const char ln_usage[] = "ln [OPTION] TARGET... LINK_NAME|DIRECTORY\n"
"Create a link named LINK_NAME or DIRECTORY to the specified TARGET\n"
"\nOptions:\n"
"\t-s\tmake symbolic links instead of hard links\n"
"\t-f\tremove existing destination files\n";
static int symlinkFlag = FALSE;
static int removeoldFlag = FALSE;
static const char *destName;
extern int ln_main(int argc, char **argv)
{
int status;
char newdestName[NAME_MAX];
static char* linkName;
if (argc < 3) {
usage (ln_usage);
@ -69,30 +67,27 @@ extern int ln_main(int argc, char **argv)
}
destName = argv[argc - 1];
linkName = argv[argc - 1];
if ((argc > 3) && !(isDirectory(destName))) {
fprintf(stderr, "%s: not a directory\n", destName);
if ((argc > 3) && !(isDirectory(linkName))) {
fprintf(stderr, "%s: not a directory\n", linkName);
exit (FALSE);
}
while (argc-- >= 2) {
strcpy(newdestName, destName);
strcat(newdestName, (*argv)+(strlen(*(++argv))));
if (removeoldFlag==TRUE ) {
status = ( unlink(newdestName) && errno != ENOENT );
status = ( unlink(linkName) && errno != ENOENT );
if ( status != 0 ) {
perror(newdestName);
perror(linkName);
exit( FALSE);
}
}
if ( symlinkFlag==TRUE)
status = symlink(*argv, newdestName);
status = symlink(*argv, linkName);
else
status = link(*argv, newdestName);
status = link(*argv, linkName);
if ( status != 0 ) {
perror(newdestName);
perror(linkName);
exit( FALSE);
}
}

54
df.c
View File

@ -38,6 +38,7 @@ static int df(char *device, const char *mountPoint)
struct statfs s;
long blocks_used;
long blocks_percent_used;
struct fstab* fstabItem;
if (statfs(mountPoint, &s) != 0) {
perror(mountPoint);
@ -48,9 +49,12 @@ static int df(char *device, const char *mountPoint)
blocks_used = s.f_blocks - s.f_bfree;
blocks_percent_used = (long)
(blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
if (strcmp(device, "/dev/root") == 0)
device = (getfsfile("/"))->fs_spec;
/* Note that if /etc/fstab is missing, libc can't fix up /dev/root for us */
if (strcmp (device, "/dev/root") == 0) {
fstabItem = getfsfile ("/");
if (fstabItem != NULL)
device = fstabItem->fs_spec;
}
printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
device,
(long) (s.f_blocks * (s.f_bsize / 1024.0)),
@ -63,52 +67,14 @@ static int df(char *device, const char *mountPoint)
return 0;
}
/*
* Given a block device, find the mount table entry if that block device
* is mounted.
*
* Given any other file (or directory), find the mount table entry for its
* filesystem.
*/
extern struct mntent *findMountPoint(const char *name, const char *table)
{
struct stat s;
dev_t mountDevice;
FILE *mountTable;
struct mntent *mountEntry;
if (stat(name, &s) != 0)
return 0;
if ((s.st_mode & S_IFMT) == S_IFBLK)
mountDevice = s.st_rdev;
else
mountDevice = s.st_dev;
if ((mountTable = setmntent(table, "r")) == 0)
return 0;
while ((mountEntry = getmntent(mountTable)) != 0) {
if (strcmp(name, mountEntry->mnt_dir) == 0
|| strcmp(name, mountEntry->mnt_fsname) == 0) /* String match. */
break;
if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice) /* Match the device. */
break;
if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice) /* Match the directory's mount point. */
break;
}
endmntent(mountTable);
return mountEntry;
}
extern int df_main(int argc, char **argv)
{
printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
"1k-blocks", "Used", "Available", "Use%", "Mounted on");
/* Only compiled in if BB_MTAB is not defined */
whine_if_fstab_is_missing();
if (argc > 1) {
struct mntent *mountEntry;
int status;

10
internal.h
View File

@ -29,6 +29,7 @@
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <mntent.h>
/* Some useful definitions */
@ -145,12 +146,19 @@ extern void my_getpwuid(char* name, uid_t uid);
extern void my_getgrgid(char* group, gid_t gid);
extern int get_kernel_revision();
extern int get_console_fd(char* tty_name);
extern struct mntent *findMountPoint(const char *name, const char *table);
extern void write_mtab(char* blockDevice, char* directory,
char* filesystemType, long flags, char* string_flags);
extern void erase_mtab(const char * name);
#if defined BB_MTAB
#define whine_if_fstab_is_missing() {}
#else
extern void whine_if_fstab_is_missing();
#endif
#if defined (BB_FSCK_MINIX) || defined (BB_MKFS_MINIX)
static inline int bit(char * addr,unsigned int nr)

33
ln.c
View File

@ -27,23 +27,21 @@
#include <errno.h>
static const char ln_usage[] = "ln [-s] [-f] original-name additional-name\n"
"\n"
"\tAdd a new name that refers to the same file as \"original-name\"\n"
"\n"
"\t-s:\tUse a \"symbolic\" link, instead of a \"hard\" link.\n"
"\t-f:\tRemove existing destination files.\n";
static const char ln_usage[] = "ln [OPTION] TARGET... LINK_NAME|DIRECTORY\n"
"Create a link named LINK_NAME or DIRECTORY to the specified TARGET\n"
"\nOptions:\n"
"\t-s\tmake symbolic links instead of hard links\n"
"\t-f\tremove existing destination files\n";
static int symlinkFlag = FALSE;
static int removeoldFlag = FALSE;
static const char *destName;
extern int ln_main(int argc, char **argv)
{
int status;
char newdestName[NAME_MAX];
static char* linkName;
if (argc < 3) {
usage (ln_usage);
@ -69,30 +67,27 @@ extern int ln_main(int argc, char **argv)
}
destName = argv[argc - 1];
linkName = argv[argc - 1];
if ((argc > 3) && !(isDirectory(destName))) {
fprintf(stderr, "%s: not a directory\n", destName);
if ((argc > 3) && !(isDirectory(linkName))) {
fprintf(stderr, "%s: not a directory\n", linkName);
exit (FALSE);
}
while (argc-- >= 2) {
strcpy(newdestName, destName);
strcat(newdestName, (*argv)+(strlen(*(++argv))));
if (removeoldFlag==TRUE ) {
status = ( unlink(newdestName) && errno != ENOENT );
status = ( unlink(linkName) && errno != ENOENT );
if ( status != 0 ) {
perror(newdestName);
perror(linkName);
exit( FALSE);
}
}
if ( symlinkFlag==TRUE)
status = symlink(*argv, newdestName);
status = symlink(*argv, linkName);
else
status = link(*argv, newdestName);
status = link(*argv, linkName);
if ( status != 0 ) {
perror(newdestName);
perror(linkName);
exit( FALSE);
}
}

5
mount.c
View File

@ -208,14 +208,13 @@ extern int mount_main (int argc, char **argv)
char *filesystemType = "auto";
char *device = NULL;
char *directory = NULL;
struct stat statBuf;
int all = FALSE;
int fakeIt = FALSE;
int useMtab = TRUE;
int i;
if (stat("/etc/fstab", &statBuf) < 0)
fprintf(stderr, "/etc/fstab file missing -- Please install one.\n\n");
/* Only compiled in if BB_MTAB is not defined */
whine_if_fstab_is_missing();
if (argc == 1) {
FILE *mountTable = setmntent (mtab_file, "r");

42
mtab.c
View File

@ -59,48 +59,6 @@ erase_mtab(const char * name)
perror(mtab_file);
}
/*
* Given a block device, find the mount table entry if that block device
* is mounted.
*
* Given any other file (or directory), find the mount table entry for its
* filesystem.
*/
static struct mntent *
findMountPoint(const char * name, const char * table)
{
struct stat s;
dev_t mountDevice;
FILE* mountTable;
struct mntent* mountEntry;
if ( stat(name, &s) != 0 )
return 0;
if ( (s.st_mode & S_IFMT) == S_IFBLK )
mountDevice = s.st_rdev;
else
mountDevice = s.st_dev;
if ( (mountTable = setmntent(table, "r")) == 0 )
return 0;
while ( (mountEntry = getmntent(mountTable)) != 0 ) {
if ( strcmp(name, mountEntry->mnt_dir) == 0 ||
strcmp(name, mountEntry->mnt_fsname) == 0 ) /* String match. */
break;
if ( stat(mountEntry->mnt_fsname, &s) == 0 &&
s.st_rdev == mountDevice ) /* Match the device. */
break;
if ( stat(mountEntry->mnt_dir, &s) == 0 &&
s.st_dev == mountDevice ) /* Match the directory's mount point. */
break;
}
endmntent(mountTable);
return mountEntry;
}
extern void
write_mtab(char* blockDevice, char* directory,
char* filesystemType, long flags, char* string_flags)

5
util-linux/mount.c
View File

@ -208,14 +208,13 @@ extern int mount_main (int argc, char **argv)
char *filesystemType = "auto";
char *device = NULL;
char *directory = NULL;
struct stat statBuf;
int all = FALSE;
int fakeIt = FALSE;
int useMtab = TRUE;
int i;
if (stat("/etc/fstab", &statBuf) < 0)
fprintf(stderr, "/etc/fstab file missing -- Please install one.\n\n");
/* Only compiled in if BB_MTAB is not defined */
whine_if_fstab_is_missing();
if (argc == 1) {
FILE *mountTable = setmntent (mtab_file, "r");

59
utility.c
View File

@ -868,5 +868,64 @@ extern int replace_match(char *haystack, char *needle, char *newNeedle, int igno
#endif
#if defined BB_DF | defined BB_MTAB
/*
* Given a block device, find the mount table entry if that block device
* is mounted.
*
* Given any other file (or directory), find the mount table entry for its
* filesystem.
*/
extern struct mntent *findMountPoint(const char *name, const char *table)
{
struct stat s;
dev_t mountDevice;
FILE *mountTable;
struct mntent *mountEntry;
if (stat(name, &s) != 0)
return 0;
if ((s.st_mode & S_IFMT) == S_IFBLK)
mountDevice = s.st_rdev;
else
mountDevice = s.st_dev;
if ((mountTable = setmntent(table, "r")) == 0)
return 0;
while ((mountEntry = getmntent(mountTable)) != 0) {
if (strcmp(name, mountEntry->mnt_dir) == 0
|| strcmp(name, mountEntry->mnt_fsname) == 0) /* String match. */
break;
if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice) /* Match the device. */
break;
if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice) /* Match the directory's mount point. */
break;
}
endmntent(mountTable);
return mountEntry;
}
#endif
#if !defined BB_MTAB && (defined BB_MOUNT || defined BB_DF )
extern void whine_if_fstab_is_missing()
{
struct stat statBuf;
if (stat("/etc/fstab", &statBuf) < 0)
fprintf(stderr, "/etc/fstab file missing -- install one to name /dev/root.\n\n");
}
#endif
/* END CODE */